高温蒸压养护对再生混凝土力学性能影响的研究  

Research on Autoclave Curing Effect of the Mechanical Properties of Recycled Aggregate Concrete

作　　者：崔正龙[1] 童华彬[1] 吴翔宇[1] 汪振双[2] 

机构地区：[1]辽宁工程技术大学建筑工程学院,阜新123000 [2]东北财经大学投资工程管理学院,大连116025

出　　处：《硅酸盐通报》2014年第3期596-599,共4页Bulletin of the Chinese Ceramic Society

基　　金：辽宁省"十百千高端人才引进工程"资助项目(50GD02)

摘　　要：为了探明高温蒸压养护对再生混凝土受力后力学行为的影响规律,通过改变混凝土的强度等级、再生粗骨料不同掺量为变量,研究了再生骨料混凝土在高温蒸压养护后的抗压强度与弹性模量,并与普通混凝土试件进行了对比研究。结果表明,当养护环境为高温蒸压养护时,再生混凝土与对比用普通混凝土的强度仅在前期高温蒸压后较高,后期强度并没有因龄期的增长而增长,具有一定幅度的下降趋势,强度等级越高,后期强度的降低幅度越小;改变再生粗骨料置换率后,混凝土在同一种强度等级下的弹性模量出现了一定幅度的下降,并且高温蒸压养护时的混凝土弹性模量略低于标养混凝土试件。To find out autoclave curing effect on the mechanical properties of recycled aggregate concrete, tests aim at concrete strength grades, different recycled coarse aggregate volume as the variables, research on the compressive strength and elastic modulus of recycled aggregate concrete after autoclave curing, compared with normal concrete specimens for a study. Results indicate that, when the curing environment is autoclave curing, the strengths of both recycled concrete and comparative normal concrete increase as autoclave curing, then as age grows, the strength does not increase , even lower, strength reduction ratio lower with the increase of strength grade; with the increase of recycled coarse aggregate replacement rate, the elastic modulus of recycled aggregate concrete which has the same compressive strength reduces a bit, meanwhile, the elastic modulus of concrete with autoclave curing is lower than that of standard concrete.

关 键 词：高温蒸压养护 再生混凝土 弹性模量 

分 类 号：TU528[建筑科学—建筑技术科学]