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  • 1
    Electronic Resource
    Electronic Resource
    Bond Strength and Damage of Long Rebar Anchored in HPC under Static and Fatigue Loading (2006)
    s.l. ; Stafa-Zurich, Switzerland
    Key engineering materials Vol. 324-325 (Nov. 2006), p. 867-870 
    Details
    ISSN: 1013-9826
    Source: Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: This paper presents an experimental study on the anchorage behaviour of longhigh-strength steel rebars embedded in high-performance concrete (HPC) under both static loadingand fatigue loading. The HPC was designed as C60 with its cube compressive strength larger than 60MPa, and the high-strength steel bar was adopted as HRB500 with its characteristic yield strengthequals 500 MPa. Under 3×106 fatigue loading cycles and then followed by a monotonous staticloading, the strain and the stress state of the reinforcement bar, and the bond stress between theconcrete and the 700 mm-long bar were investigated. Based on the test results and the ANSYS finiteelement analysis, the bond behaviour between HPC and long high-strength steel bars is discussed
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/01/52/transtech_doi~10.4028%252Fwww.scientific.net%252FKEM.324-325.867.pdf
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  • 2
    Electronic Resource
    Electronic Resource
    On Sensitivity of Thermal Parameters for Concrete Box Girderin the Sunshine (2008)
    s.l. ; Stafa-Zurich, Switzerland
    Key engineering materials Vol. 385-387 (July 2008), p. 825-828 
    Details
    ISSN: 1013-9826
    Source: Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: In this paper, the temperature field and the thermal effects on a concrete box girder in thesunshine are investigated. For this purpose, the finite element method (FEM) package ANSYS isapplied. By varying the values of different thermal parameters, the sensitivity of the thermalparameters is explored. Numerical results are presented and discussed to show the influences of thethermal parameters and the temperature field on the deflection and the tensile stress of a single-spanconcrete bridge with a box cross section
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/01/57/transtech_doi~10.4028%252Fwww.scientific.net%252FKEM.385-387.825.pdf
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  • 3
    Electronic Resource
    Electronic Resource
    Micro-Damage Mechanisms and Property Fluctuation of Recycled Aggregate Concrete (2007)
    s.l. ; Stafa-Zurich, Switzerland
    Key engineering materials Vol. 348-349 (Sept. 2007), p. 61-64 
    Details
    ISSN: 1013-9826
    Source: Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: In this paper, the basic damage mechanisms and the primary reasons for the propertyfluctuation of recycled aggregate concrete are investigated experimentally. By a comprehensiveliterature study and systematic laboratory tests, the interactions between the old and the new interfacesin recycled aggregate concrete are analyzed. In particular, the damage initiation and evolutionmechanisms on the old and the new interfaces are studied in details. The essential factors affecting thefluctuation and its extent are investigated from the point of view of material sciences. The presentresults imply that the qualitative and quantitative changes of the old and the new interfaces during theloading process induce a notable fluctuation of the mechanical and the physical properties of recycledaggregate concrete. To reduce the fluctuation and improve the mechanical properties of the recycledaggregate concrete, effective controlling and processing measures are suggested and discussed
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/01/54/transtech_doi~10.4028%252Fwww.scientific.net%252FKEM.348-349.61.pdf
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  • 4
    Electronic Resource
    Electronic Resource
    Fire Damage and Residual Strengths of Recycled Aggregate Concrete (2007)
    s.l. ; Stafa-Zurich, Switzerland
    Key engineering materials Vol. 348-349 (Sept. 2007), p. 937-940 
    Details
    ISSN: 1013-9826
    Source: Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: In this paper, recycled aggregate concrete subjected to severe fire or high temperatureloading condition is investigated. Special attention of the study is devoted to analyze the fire-induceddamage and the residual strengths of recycled aggregate concrete. For this purpose, 160 cubespecimens are heated under a single thermal cycle of 20oC (ambient temperature), 200oC, 300oC,400oC, 500oC, 600o, 700oC and 800oC, respectively. Different replacement percentages of therecycled coarse aggregates (RCA) with 0, 30%, 50%, 70% and 100% are considered. Damage andfailure patterns of the recycled aggregate concrete specimens are analyzed systematically based onexperimental observations. The residual compressive strengths of the recycled aggregate concrete(RAC) at elevated temperatures are studied and evaluated in details. Some differences between therecycled aggregate concretes with different replacement percentages of the recycled coarse aggregatesare observed. On the basis of the experimentally measured residual compressive strengths of therecycled concrete, relationships between the residual compressive strengths of the recycled aggregateconcrete and the elevated temperature are derived. The results presented in this paper have directapplications in the design and structural analysis of reinforced concrete structures consisting ofrecycled aggregate concrete
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/01/55/transtech_doi~10.4028%252Fwww.scientific.net%252FKEM.348-349.937.pdf
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