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  • Articles  (40)
  • Chemistry  (40)
  • Atomic, Molecular and Optical Physics
  • General Chemistry
  • 1980-1984  (40)
  • 1970-1974
  • 1925-1929
  • 1980  (40)
  • 1972
  • Architecture, Civil Engineering, Surveying  (40)
  • 1
    Electronic Resource
    Electronic Resource
    New York, NY [u.a.] : Wiley-Blackwell
    Fire and Materials 4 (1980) 
    ISSN: 0308-0501
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Architecture, Civil Engineering, Surveying , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
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  • 2
    Electronic Resource
    Electronic Resource
    New York, NY [u.a.] : Wiley-Blackwell
    Fire and Materials 4 (1980), S. 1-16 
    ISSN: 0308-0501
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Architecture, Civil Engineering, Surveying , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Recent development and trends of development in progress within the field of structural fire protection are described and evaluated with a focus on the contributions circulated within CIB W14. The presentation is structured on the one hand with regard to different methods of design (experimental determination of fire resistance, analytical determination of fire resistance, analytical design based directly or indirectly on real fire exposure characteristics), on the other with regard to different structural materials (steel, concrete and wooden structures). The presentation gives evidence of a development towards an increased application of analytical design methods based on modern structural safety philosophy. The urgency of increased research is stressed for improving the present building code systems in order to achieve fire safety levels which are consistent with strictly defined functional requirements.
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  • 3
    Electronic Resource
    Electronic Resource
    New York, NY [u.a.] : Wiley-Blackwell
    Fire and Materials 4 (1980), S. 17-27 
    ISSN: 0308-0501
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Architecture, Civil Engineering, Surveying , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: A description is given of a model which predicts the motion of combustion products and fresh air caused by a fire located in one room of a two-room structure. The gas in each room is assumed to be divided into two homogeneous layers, a layer next to the ceiling which contains hot combustion products and one next to the floor which contains fresh air. The model predicts the motion of the interface separating these layers and the density of the hot layers as a function of time and an arbitrarily specified fire heat release rate.
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  • 4
    Electronic Resource
    Electronic Resource
    New York, NY [u.a.] : Wiley-Blackwell
    Fire and Materials 4 (1980), S. 28-36 
    ISSN: 0308-0501
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Architecture, Civil Engineering, Surveying , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: This paper deals with legislation enacted in the United Kingdom for the control of the hazard form fire in buildings of public resort such as hotels, boarding houses, factories, offices and shops as well as domestic dwellings. It gives background to why the various Acts were deemed necessary, why subsequent Regulations under the Acts were introduced, an impression on the effect their enforcement has had and an introduction into what is envisaged for the future. The legislation is not the product of any one Government department nor is it enforced by any single agency. Much of it is enforced by local authority fire brigade fire prevention departments and other sections by local authority Building Control Officers. It is the view of the author that more controls are required by way of Regulations and that certain of the Regulations at present in force are in need of revision. Included in the paper are tables of the latest statistics available (1976) together with other data, previously unpublished, which in the author's opinion justify his claim that more controls are needed. In the final part of the paper the author recommends most strongly that the gap in the present British Standard fire tests produced by the lack of an effective means of evaluating the smoke-producing qualities and the toxicity of the produced by the lack of an effective means of evaluating the smoke-producing qualities and the toxicity of the products of combustion of different materials should be urgently studied with an amended priority.
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  • 5
    Electronic Resource
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    New York, NY [u.a.] : Wiley-Blackwell
    Fire and Materials 4 (1980), S. 37-41 
    ISSN: 0308-0501
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Architecture, Civil Engineering, Surveying , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: The effect of anti-smoke additives in poly(vinylchloride) (PVC) has been studied using self-ignition methods. The self-ignition reaction was followed thermally, visually and by gas - liquid chromatography of the gaseous phase around the sample. Particular emphasis was palced on the determination of the CO, CO2 and aromatic species. It is shown that ferrocence, among similar additives, considerably modifies the self-ignition behaviour of PVC by inducing glowing phenomena of various kinds. In some cases this incandescence can lead to self-ignition. From the analysis of carbon oxids and aromatic species as a function of time and temperature, it is possible to deduce that the anti-smoke reaction is associated, at least partially, with reactions which lead to incandescence. These reactions transform the carbon into carbon oxides instead of producing, in the gaseous phase, molecules which on further condensation lead to aromatic species at the origin of the soot. In short, the anit-smoke reaction appears to proceed mainly through a competing mechanism.
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  • 6
    Electronic Resource
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    New York, NY [u.a.] : Wiley-Blackwell
    Fire and Materials 4 (1980), S. 149-153 
    ISSN: 0308-0501
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Architecture, Civil Engineering, Surveying , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: This paper outlines the current situation of fire testing in Europe under the headings of combustibility, ignitability, flame spread, heat release, smoke tests and toxicity.
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  • 7
    Electronic Resource
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    New York, NY [u.a.] : Wiley-Blackwell
    Fire and Materials 4 (1980), S. 144-148 
    ISSN: 0308-0501
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Architecture, Civil Engineering, Surveying , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: The heat transfer behavior was determined for textile materials used in Air Force flight jackets. The primary objective as to incorporate flame resistant, thermally stable fiber forms in jackets to provide greater protection to aircrewmen from fire. Combinations of fabric/insulation, flammable and nonflammable, were evaluated in the layered configurations intended for use in either cold weather and moderately cold weather jackets. A combination of Nomex fabric (outer shell) and Kynol® batting (insulation) proved superior to all other combinations of fabric and batting.
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  • 8
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    New York, NY [u.a.] : Wiley-Blackwell
    Fire and Materials 4 (1980), S. 154-156 
    ISSN: 0308-0501
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Architecture, Civil Engineering, Surveying , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Thin coats of flame-retardant paints are unable to protect flammable substrates as there is not sufficient flame retardant in the thin coat to protect the substrate. Intumescent coatings foam and bubble when subjected to high temperatures and create multicellular cushions which prevent (a) heat from penetrating into the substrate and (b) flames from spreading along the surface. This paper concentrates on paints and varnishes, but also considers protective coatings for structural steel, smoke proof and wall piercings.
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  • 9
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    New York, NY [u.a.] : Wiley-Blackwell
    Fire and Materials 4 (1980), S. 157-162 
    ISSN: 0308-0501
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Architecture, Civil Engineering, Surveying , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: A theoretical approach is developed for evaluating quantitatively the heat evolved during a reaction-to-fire test. This involves determining the transfer function from two head balance equations, one concerning the walls and the other the air in the test box. A comparison between this theoretical approach and the empirical ‘area under the curve’ method has been made for 34 tests on electrical cables. It is shown that the empirical method is unacceptable.
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  • 10
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    New York, NY [u.a.] : Wiley-Blackwell
    Fire and Materials 4 (1980), S. 163-163 
    ISSN: 0308-0501
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Architecture, Civil Engineering, Surveying , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
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  • 11
    Electronic Resource
    Electronic Resource
    New York, NY [u.a.] : Wiley-Blackwell
    Fire and Materials 4 (1980) 
    ISSN: 0308-0501
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Architecture, Civil Engineering, Surveying , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
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  • 12
    Electronic Resource
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    New York, NY [u.a.] : Wiley-Blackwell
    Fire and Materials 4 (1980), S. 165-172 
    ISSN: 0308-0501
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Architecture, Civil Engineering, Surveying , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: The development of the Australian Standard AS 1530 Part 3 ‘Test for Early Fire Hazard Properties of Materials’ from the study of the fire behavior of cellulosic wall linings in simulated room fires has been outlined. Similar studies for assessing a wider range of wall linings are now reported including various plastic facings applied to hardboard. Using similar parameters for ignitability, spread of flame, heat evolved and smoke developed, the behaviors of the linings in the standard test have been compared to the behavior in corner-wall burns. Two methods of ignition were used for the burns; (a) timber cribs; and (b) impressed radiant heat with a pilot flame. The results are discussed in terms of the validity of the standard test as a multi-parameter assessment of materials in a fire hazard situation. The test has been validated for the wider range of wall lining materials.
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  • 13
    ISSN: 0308-0501
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Architecture, Civil Engineering, Surveying , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: It is submitted that the development of a set of complementary performance test standards and of an algorithm for calculating from the test results the inherent potential of products for harm is the prerequisite of any progress towards a coherent fire risk assessment philosophy.
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  • 14
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    New York, NY [u.a.] : Wiley-Blackwell
    Fire and Materials 4 (1980), S. 177-184 
    ISSN: 0308-0501
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Architecture, Civil Engineering, Surveying , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: The paper examines briefly the history of fire testing in the UK and outlines the current European position as exemplified by activities in the EEC member countries, the Scandinavian countries and Eastern Europe. The role of ISO and the changing approach to the development of fire tests is considered. The interactions amongst test developing bodies, regulatory authorities and the regional organizations concerned with harmonization are highlighted.
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  • 15
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    New York, NY [u.a.] : Wiley-Blackwell
    Fire and Materials 4 (1980), S. 185-191 
    ISSN: 0308-0501
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Architecture, Civil Engineering, Surveying , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: In this paper the definition of heat release rate in fires is given in terms of heat of combustion and mass loss rate of the fuel. Various components of the heat of combustion are defined. The dependency of heat of combustion components and mass loss rate on factors such as fire stages, oxygen to fuel ratio, heat flux received by the fuel, chemical composition of the fuel vapors and products are enumerated. Applications of heat release rate data for relative fire hazard of fuels, for various fire conditions, for human escape potential from fires and for the operation of fire-sensing devices are discussed.
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  • 16
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    New York, NY [u.a.] : Wiley-Blackwell
    Fire and Materials 4 (1980), S. 201-202 
    ISSN: 0308-0501
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Architecture, Civil Engineering, Surveying , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
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  • 17
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    New York, NY [u.a.] : Wiley-Blackwell
    Fire and Materials 4 (1980), S. 202-202 
    ISSN: 0308-0501
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Architecture, Civil Engineering, Surveying , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
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  • 18
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    New York, NY [u.a.] : Wiley-Blackwell
    Fire and Materials 4 (1980), S. 192-200 
    ISSN: 0308-0501
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Architecture, Civil Engineering, Surveying , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: The activities within the framework of TNO's research project on smoke problems in buildings on fire are reviewed. Two aspects will be dealt with extensively: smoke production and smoke movement. Furthermore, possible application of its finding will be discussed. The article reflects the state of the art at the end of 1978. In the meantime, the research programme has been concluded.
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  • 19
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    Fire and Materials 4 (1980), S. 42-44 
    ISSN: 0308-0501
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Architecture, Civil Engineering, Surveying , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Among the various methods for predicting the development of a fire in real conditions we have chosen the one which works on a small-scale model. The differences in gas concentrations, available fuel, and convection and heat transfer are recognized and discussed. A small-scale model has been built in which any oxygen concentration, heat flux and air supply can be reproduced simultaneously. The method makes it possible to simulate a good range of conditions, and by controlling these conditions a better knowledge of the geometric reduction which is to be used in the smallscale model can be obtained.
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  • 20
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    Fire and Materials 4 (1980), S. 45-49 
    ISSN: 0308-0501
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Architecture, Civil Engineering, Surveying , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: This study provides basic data with respect to pain and burns produced on short-term contact of bare skin with heated substances. The data may also be used to determine the thermal properties and thicknesses of fabrics or coatings required to prevent injury in such contacts. The maximum temperature any material might attain without causing injury on contact with bare skin was determined from measurements of pain threshold during contact with heated materials representing a wide spectrum of thermal properties form good conductors to good insulators. Pain threshold times were converted to blister times and the latter extrapolated to predict those temperatures at which blistering would result form ‘instantaneous’ (0.3 s) contact. The predicted temperatures were verified experimentally in contacts with four different materials. From these data, charts and equations were derived by which the maximum permissible temperature for safe contact could be determined for any material solely form a knowledge of its thermal conductivity, density and specific heat. Additionally, equations for transient heat flow in two-layer systems yield the thickness of coatings, fabrics or other thermal barriers of known properties which would be required to protect the skin form pain or burn on contact with materials at excessive temperatures.
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  • 21
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    Fire and Materials 4 (1980), S. 60-60 
    ISSN: 0308-0501
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Architecture, Civil Engineering, Surveying , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
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  • 22
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    Fire and Materials 4 (1980), S. 59-60 
    ISSN: 0308-0501
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Architecture, Civil Engineering, Surveying , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
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  • 23
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    New York, NY [u.a.] : Wiley-Blackwell
    Fire and Materials 4 (1980), S. 50-58 
    ISSN: 0308-0501
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Architecture, Civil Engineering, Surveying , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: The toxicological end-points used in a method for the assessment of the toxicity of combustion products are described. The evaluation considers three areas of toxicological interaction: incapacitation, death, and post-exposure involvement. The model of incapacitation described is the leg-flexion avoidance response of the rat. Additional end-points to assist in the determination of the causality of the observed toxicity are included. The effects of the combustion products of Douglas fir, a phenolic foam, a urea formaldehyde foam and a flexible polyurethane foam on these endpoint are described. The wide range of types of potential toxicities resulting form exposure of animals to the combustion products of materials is discussed. Additionally discussed are the relative merits of the leg-flexion avoidance response as a model of incapacitation. Conclusions as to the important components of a first-tier toxicological evaluation of combustion products are drawn.
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  • 24
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    Fire and Materials 4 (1980), S. 60-60 
    ISSN: 0308-0501
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Architecture, Civil Engineering, Surveying , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
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  • 25
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    New York, NY [u.a.] : Wiley-Blackwell
    Fire and Materials 4 (1980), S. 60-60 
    ISSN: 0308-0501
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Architecture, Civil Engineering, Surveying , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
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  • 26
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    Fire and Materials 4 (1980) 
    ISSN: 0308-0501
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Architecture, Civil Engineering, Surveying , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
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  • 27
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    Fire and Materials 4 (1980), S. 66-70 
    ISSN: 0308-0501
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Architecture, Civil Engineering, Surveying , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Results of measurements of thermal expansion of Portland cement paste, mortar, concrete and a dolomitic rock aggregate are presented. Test temperatures ranged from 27 to 871°C. Cement paste contracted when subjected to temperatures from 204 to 871°C. Thermal expansion of mortar and concrete was dominated by thermal expansion characteristics of the mineral aggregate. However, expansion was moderated by contraction of the cement paste matrix at elevated temperatures. Average coefficients of expansion, over specific temperature ranges, are given for the materials tested. Equipment developed to control automatically the rate of heating and record strain vs. temperature relationships is described.
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  • 28
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    Fire and Materials 4 (1980), S. 71-76 
    ISSN: 0308-0501
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Architecture, Civil Engineering, Surveying , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Because language conveys the idea of fire severity by a single expression, it has always seemed desirable to find a single variable for its quantification. The earlier suggestion by the author that the total heat absorption per unit surface area of the compartment boundaries during the period of full fire development, to be referred to as overall heat load, be used as a measure of destructive potential of fires, has been critically examined. It has been found that for many reinforced and prestressed concrete building elements, the overall heat load is indeed an approximate descriptor of the severity of compartment fires, irrespective of their temperature histories.
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  • 29
    ISSN: 0308-0501
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Architecture, Civil Engineering, Surveying , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Measurement of the rate of oxygen consumption provides a simple, versatile and powerful tool for estimating the rate of heat release in fire experiments and fire tests. The method is based on the generalization that the heats of combustion per unit of oxygen consumed are approximately the same for most fuels commonly encountered in fires. A measurement of the rate of oxygen consumption can then be converted to a measure of rate of heat release. Data on heats of combustion are presented to support this generalization. The applicability of the technique to combustion under fire conditions is examined, possible sources of error in the measurements are discussed, and applications of the method are reviewed. It is concluded that the accuracy of oxygen consumption based rate of heat release measurements should compare favorably with those derived from conventional calorimetric measurements.
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  • 30
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    Fire and Materials 4 (1980), S. 77-82 
    ISSN: 0308-0501
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Architecture, Civil Engineering, Surveying , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Experiments using a thermobalance, a hot-plate and a moving furnace have all shown that polymers can evolve oxidation products in air even at moderate temperatures. These gases can include carbon monoxide, formaldehyde and acrolein. The amounts are generally low except near the very top of the temperature range used in some processes. Tests in the vicinity of three different extruders have confirmed some of these small-scale findings but also showed that the evolved gases were adequately handled by the ventilation installed. The evolution of other gases in certain cases has also been briefly studied. Some measure of the heat evolved in oxidative pyrolysis has also been obtained for polyethylene. The polymers investigated were low density and high density polyethylene, poly(ethylene vinylacetate), polypropylene, poly(vinylonitrille) polypropylene, poly(vinylchloride), polystyrene, poly(methylmethacrylate), polycarbonate, poly(ethylene terephthalate), nylon 6-6, acrylonitrile/butadiene/styrene and one nature material (wood).
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  • 31
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    Fire and Materials 4 (1980), S. 83-86 
    ISSN: 0308-0501
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Architecture, Civil Engineering, Surveying , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: An important observation during full-scale fires was that burning behaviour is often determined by softening characteristics as well as ignitability, flame spread, etc. Examples include stacking chairs where thermoplastics give a rapid rate of fire growth and suspended ceilings where thermoplastics reduce fire hazard. A test rig has been progressively developed at RAPRA to reproduce the mechanisms and fire growth rates of stacked chairs and to evaluate the role of softening in fire growth. Although the ignitability of fire-retarded materials is less than that of non-fire-retarded grades, the fire growth rate in stacks is similar and may be related to the softening behaviour determined by exposing sheets of material to radiant heat. The rate of fire growth in stacks may be significantly reduced by modifying the softening behaviour of materials, e.g. by using asbestos-reinforced thermoplastics which can form an integral, non-melting felt or by using non-melting materials such as SMC or wood.
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  • 32
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    Fire and Materials 4 (1980), S. 87-91 
    ISSN: 0308-0501
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Architecture, Civil Engineering, Surveying , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: This paper describes work carried out on flame-retarded polypropylene comparing results on selected small-scale laboratory fire tests with those obtained on a larger-scale test designed to simulate the typical real life hazard situation. In the latter test a number of important parameters such as heat build-up, Hame spread, smoke development and gas evolution were assessed. The results indicate that there is need to use both types of tests to gain a fuller understanding prior to using new materials. An assessment based on small-scale tests alone could be misleading and allow the use of potentially hazardous material in the particular application involved.
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  • 33
    Electronic Resource
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    New York, NY [u.a.] : Wiley-Blackwell
    Fire and Materials 4 (1980), S. 92-97 
    ISSN: 0308-0501
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Architecture, Civil Engineering, Surveying , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Considerable concern has been expressed about the increasing number and changing pattern of fires and the fact that modern upholstered furniture is relatively easy to ignite and, once ignited, burns rapidly to produce large quantities of smoke and toxic gas. This led to a number of major research programmes and to the evolution of a number of test procedures in the UK. The first major test procedure was published in 1976 by the BPF in conjunction with RAPRA, BRMA and FIRA. An important aspect of this approach was the linking of ignition and rate of initial burning data with the application of the product and the environmental hazard. It was evolved within a short period of time to proved furniture designers and specifies with a means of avoiding products of high risk. The DOE/PSA are using a comprehensive series of Fire Retardant Specifications to control and specify their upholstered furniture and bedding. Specifications have been developed which enable individual components and sub-assemblies as well as the final product to be characterized in terms of ignitability and burning characteristics, i.e. temperatures, smoke, and carbon monoxide production. BS DD58 and BS 5852 Part1, ignitability tests for upholstered seating are essentially a combination of BPR and DOE/PSA test procedures. Cigarettes, gas flames and wooden cribs are used for the ignition sources and are positioned on a composite seat/back test rig.
    Additional Material: 5 Ill.
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  • 34
    Electronic Resource
    Electronic Resource
    New York, NY [u.a.] : Wiley-Blackwell
    Fire and Materials 4 (1980), S. 98-103 
    ISSN: 0308-0501
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Architecture, Civil Engineering, Surveying , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: The standard NBS/Aminco smoke test chamber is critically examined from the point of view of repeatability and reproducibility of the apparatus itself. Individual components contributing to the overall determination are examined and suggested lines for improvement are made which should result in more consistent results. Problems associated with the presentation of results are discussed and a new approach which includes time-weighted data is proposed. This attempts to consider the rate dependence of smoke production in one calculated figure rather than isolated observations such as maximum optical density. Utilizing the NBS/Aminco chamber, a novel procedure for determining the smoke evolution characteristics of materials has been developed which can be considered to simulate more closely the progress of thermal degradation that a material undergoes in a real fire.
    Additional Material: 13 Ill.
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  • 35
    Electronic Resource
    Electronic Resource
    New York, NY [u.a.] : Wiley-Blackwell
    Fire and Materials 4 (1980) 
    ISSN: 0308-0501
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Architecture, Civil Engineering, Surveying , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Type of Medium: Electronic Resource
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  • 36
    Electronic Resource
    Electronic Resource
    New York, NY [u.a.] : Wiley-Blackwell
    Fire and Materials 4 (1980), S. 104-108 
    ISSN: 0308-0501
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Architecture, Civil Engineering, Surveying , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: The heat flux in the NBS smoke chamber has been varied from 1.0 to 5.0 W cm-2 in 0.5 W cm-2 steps for some fifteen natural and synthetic materials. These experiments confirm the results given in previous papers for a smaller heat flux range, namely that smoke density varies ove4r the temperature/heat flux range. The extended range studied ensured that a much higher proportion of the materials reached a heat flux at which ignition occurred. As before at this and higher heat fluxes, the experiments were repeated in the flaming mode to ensure better reproducibility. With a few exceptions the general shape of the specific optical density/heat flux plot was similar, with a steep rise to a peak and then a corresponding drop to a low value at high fluxes. At 5 W cm-2the drop had not been reached in some cases, but it is assumed to occur later by inference from earlier work on a smaller-scale apparatus at high temperatures. Complex materials can give unusual plots during the transition from pyrolysis to combustion. This is true of certain polymers containing fire retardant when the pyrolysis of the additive can have a separate effect.
    Additional Material: 5 Ill.
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  • 37
    Electronic Resource
    Electronic Resource
    New York, NY [u.a.] : Wiley-Blackwell
    Fire and Materials 4 (1980), S. 115-118 
    ISSN: 0308-0501
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Architecture, Civil Engineering, Surveying , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: The effect of diammonium phosphate has been examined on sawdust-polymethylmethacrylate composites. It has been observed that the char formation depends on the distribution of DAP in sawdust and polymethylmethacrylate. An interesting correlation was found between the mass burning rates of the composites and the extent of char formation during thermal degradation.
    Additional Material: 6 Ill.
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  • 38
    ISSN: 0308-0501
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Architecture, Civil Engineering, Surveying , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: The internal temperature of rigid foam undergoing combustion in the DIN tubular traveling furnace using conditions previously employed for gas generation and analysis has been studied. Unexpected findings were obtained in that the material exhibited no insulating effect and temperatures within the core of the foam were up to 25% (+125°C at 500°C) greater than has been assumed or indeed aimed for. An explanation of the phenomenon has been put forward and proved by further experiment. Suggested practices to be adopted in the future to minimize the effect are described. Using these practices the gaseous combustion products from the materials studied at 500°C were found not to change in type or distribution; however, rather more accurate description of combustion temperature is achieved. With a static furnace of the ‘Potts Pot’ type a very much smaller temperature differential is observed, hence better definition of combustion temperature is allowed.
    Additional Material: 7 Ill.
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  • 39
    Electronic Resource
    Electronic Resource
    New York, NY [u.a.] : Wiley-Blackwell
    Fire and Materials 4 (1980), S. 119-126 
    ISSN: 0308-0501
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Architecture, Civil Engineering, Surveying , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: The evaluation of hazards from developing room fires often requires a knowledge of flame lengths developed by burning objects. Procedures for estimating flame lengths have been available only for vertical plume fires, where there is no flame impingement on the room ceiling. Calculational procedures are developed for approximate calculation of flame lengths when part of the flame flow is along the ceiling. Four common geometries are treated: unbounded ceiling, plume near corner, plume in corner and one-directional corridor spread. Ceiling flame lengths are calculated by use of the assumption that the total air entrained up to the flame tip is the same for ceiling flow as for the free fire. Comparison with limited experimental data suggests potential for prediction in full-scale room fires.
    Additional Material: 6 Ill.
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  • 40
    Electronic Resource
    Electronic Resource
    New York, NY [u.a.] : Wiley-Blackwell
    Fire and Materials 4 (1980), S. 127-143 
    ISSN: 0308-0501
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Architecture, Civil Engineering, Surveying , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: This paper presents results of tests performed on 35 materials, including woods, synthetic and textile materials, which have been submitted to thermal degradation at three different combustion temperatures. In addition, the interpretation and limitations of toxicological test results are discussed more generally.
    Additional Material: 11 Ill.
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