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钢管内混凝土残余强度试验研究
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作者 黄永安 《科技成果管理与研究》 2009年第2期78-81,共4页
利用9个已破坏的钢管混凝土试件,剖开钢管,取出管内混凝土,研究经历过三向应力作用后的钢管内混凝土的受力性能。将管内混凝土截成径高比接近的圆柱体试件,按混凝土立方体强度的标准试验方法,测得各试件的混凝土再次受压后的强度... 利用9个已破坏的钢管混凝土试件,剖开钢管,取出管内混凝土,研究经历过三向应力作用后的钢管内混凝土的受力性能。将管内混凝土截成径高比接近的圆柱体试件,按混凝土立方体强度的标准试验方法,测得各试件的混凝土再次受压后的强度,绘出试件的应力-应变全曲线。研究表明,已经历过三向应力的混凝土再次受力性能与初次不同,但应力-应变曲线的形状和特征点与初次受力的混凝土相似。 展开更多
关键词 混凝土残余强度 本构关系 三向应力
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Recent studies on mechanical properties of recycled aggregate concrete in China-A review 被引量:35
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作者 XIAO JianZhuang LI WenGui POON ChiSun 《Science China(Technological Sciences)》 SCIE EI CAS 2012年第6期1463-1480,共18页
Numerous experimental and theoretical studies on recycled aggregate concrete have been carried out in China in the past 10 years.This paper provides a comprehensive review of the related findings of research on the me... Numerous experimental and theoretical studies on recycled aggregate concrete have been carried out in China in the past 10 years.This paper provides a comprehensive review of the related findings of research on the mechanical properties of RAC in China.The influences of the RCA on the strength and deformation characteristics of concrete,the statistical characteristics for the strength of RAC,fracture energy,stress-strain relationships under uniaxial compression,uniaxial tension as well as pure shear,and the residual strength of RAC after exposure to high temperatures,the bond between RAC and different kinds of steel rebar were also reviewed.Furthermore,some recent studies on the numerical simulation of the failure mechanism for RAC at the meso-structure level were discussed. 展开更多
关键词 construction and demolition (C&D) wastes recycled coarse aggregate (RCA) recycled aggregate concrete (RAC) me-chanical property test numerical simulation
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