少量陶粒对普通混凝土物理力学性能的改善效果  

Improved effects of less ceramsite on physical-mechanical properties of normal weight concrete

作　　者：杨健辉[1,2] 张哲 袁慧童 陈建中 YANG Jianhui;ZHANG Zhe;YUAN Huitong;CHEN Jianzhong(Henan Province Engineering Laboratory for Eco-architecture and the Built Environment,Henan Polytechnic University,Jiaozuo 454000,China;School of Civil Engineering,Henan Polytechnic University,Jiaozuo 454000,China;Wanfang College of Science and Technology,Henan Polytechnic University,Zhengzhou 451400,China;Henan D.R.Construction Group,Xinxiang 453002,China)

机构地区：[1]河南理工大学生态建筑与环境构建河南省工程实验室,河南焦作454000 [2]河南理工大学土木工程学院,河南焦作454000 [3]河南理工大学万方科技学院,河南郑州451400 [4]河南省第二建设集团有限公司,河南新乡453002

出　　处：《混凝土》2018年第11期122-126,共5页Concrete

基　　金：国家自然科学基金项目(41172317)

摘　　要：为了改善普通混凝土的物理力学性能,以等体积页岩陶粒取代普通粗骨料的方式,对少陶粒混凝土的干表观密度、导热系数、抗压强度、劈拉强度、弹性模量、应力-应变曲线分别进行了试验研究。结果表明,抗压强度、劈拉强度和弹性模量均随取代率增加呈先增大后减小的变化趋势,并在10%时达到最大值;干表观密度和导热系数则均呈线性减小关系;应力-应变曲线仍然符合过镇海模型(1982)。It is tested on the dry appearance density(ρd),thermal conductivity(λ),cube compressive strength(fc),splitting tensile strength(fst),elasticity modulus(E0)and stress-strain(σ-ε)curve of hybrid aggregates concrete with less ceramsite(HACC).Which the coarse aggregates of normal weight concrete(NWC)are replaced by less shale ceramsite in equal volume in order to improve the physical-mechanical properties of NWC.The results show that the fc,fst and E0all increase firstly and then decrease with the increases of the replacement rates of ceramsite(Ssc),which reaches the maximum when Ssc is10%.But theρd andλall decrease linearly with the increases of Ssc.Theσ-εcurve of HACC still accords with the Z.H.Guo Model(1982).

关 键 词：普通混凝土 少陶粒混凝土 页岩陶粒 导热系数 应力-应变曲线 

分 类 号：TU528.01[建筑科学—建筑技术科学]