ALBERT

All Library Books, journals and Electronic Records Telegrafenberg

X
feed icon rss

Your email was sent successfully. Check your inbox.

An error occurred while sending the email. Please try again.

Proceed reservation?

Export
  • 1
    Electronic Resource
    Electronic Resource
    Cement content in concretes made with aluminous cement (1994)
    Springer
    Materials and structures 27 (1994), S. 285-287 
    Details
    ISSN: 1359-5997
    Source: Springer Online Journal Archives 1860-2000
    Topics: Architecture, Civil Engineering, Surveying
    Description / Table of Contents: Resume On propose une équation pour calculer la quantité de ciment dans les bétons de ciment alumineux fondu. La méthode calcule la teneur en Fe2O3 du béton, attendu que les concentrations de cet oxide sont très constants pour le ciment alumineux. Ou décompte le taux de Fe2O3 des granulats. Pour l'analyse du Fe on a appliqué la fluorescence x. *** DIRECT SUPPORT *** A00G7067 00003
    Notes: Abstract An equation for calculating the cement content in concretes made with aluminous cement is proposed, based on determining the Fe2O3 content of the concrete, assuming that the proportions of this oxide, as provided by the manufacturing company, throughout the production process are very stable. The values are corrected according to the Fe2O3 content of the aggregates. The Fe content is determined by x-ray fluorescence analysis (XRF).
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02473045
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 2
    Electronic Resource
    Electronic Resource
    X-ray diffraction analysis of oxidizable sulphides in aggregates used in concrete (1993)
    Springer
    Materials and structures 26 (1993), S. 24-29 
    Details
    ISSN: 1359-5997
    Source: Springer Online Journal Archives 1860-2000
    Topics: Architecture, Civil Engineering, Surveying
    Description / Table of Contents: Resume On décrit ici les résultats de la diffraction X dans des recherches destinées à découvrir les conditions expérimentales les mieux appropriées pour améliorer la limite de détection de pyrite (FeS2) et pyrrhotite (Fe1−xS) contenues dans des granulats. On examine le type de rayonnement, le système de détection, les caractéristiques expérimentales, etc. On suggère une méthode d’analyse quantitative utilisant le fluorite (CaF2) comme norme interne et on discute le choix des angles de réflexion de pyrite et de pyrrhotite.
    Notes: Abstract This paper describes the X-ray diffraction results of investigations aimed at finding the most suitable experimental conditions for improving the detection limit of pyrite (FeS2) and pyrrhotite (Fe 1−x S) contained in aggregates. The type of radiation, the system of detection, aperture and detector slits etc. are discussed. A method of quantitative analysis using fluorite (CaF2) as an internal standard is suggested and the selection of pyrite and pyrrhotite reflections is discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02472234
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 3
    facet.materialart.
    Unknown
    Modelling the non-linear hydrological behaviour of a small Mediterranean forested catchment (2008)
    Wiley
    Details
    Publication Date: 2008-08-30
    Description: A progressive perceptual understanding approach was used to identify a model structure able to represent the non-linear behaviour of the hydrological cycle in a small intermittent Mediterranean stream. The initial lumped model structure consisting of a series of four connected water tanks (LU3) progressed to a model with five tanks (LU4), and finally to a seimidstributed model structure (SD4) in which spatial variability of the evapotranspiration according to the vegetation cover and to the local aspect was considered. In the final model structure, which gave the best fit (Nash-Sutcliffe efficiency index = 0.78), an additional tank representing the riparian zone was included (SD4-R). Results showed that the abrupt changes of the riparian water table during summer and the formation of a perched water table during the transition from dry to wet conditions were the main mechanisms leading to the non-linear hydrological behaviour. The transpiration process from the saturated zone and the spatial variability of evapotranspiration resulted in key factors successfully representing the annual water balance. The spatial and temporal validations carried out for each of the four model structures considered in this study supported the hypothesis adopted during the calibration process. Copyright © 2008 John Wiley & Sons, Ltd.
    Print ISSN: 0885-6087
    Electronic ISSN: 1099-1085
    Topics: Architecture, Civil Engineering, Surveying , Geography
    Published by Wiley
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER CURRENT
Close ⊗
This website uses cookies and the analysis tool Matomo. More information can be found here...