关于多孔混凝土干燥收缩特性的试验研究  

Experimental study on drying shrinkage characteristic of porous concrete

作　　者：张茂刚 畑中重光 吴东岳[4] ZHANG Maogang;HATANAKA Shigemitsu;WU Dongyue(Wuxi Research Center for Environmental Science and Engineering,Wuxi 214153,China;College of Architectural and Environmental Engineering,Wuxi City College of Vocational Technology,Wuxi 214153,China;Graduate School of Engineering,Mie University,Tsu City,Mie Prefecture 514-8570,Japan;School of Civil Engineering and Architecture,Jiangsu University of Science and Technology,Zhenjiang 212005,China)

机构地区：[1]无锡环境科学与工程研究中心,江苏无锡214153 [2]无锡城市职业技术学院建筑与环境工程学院,江苏无锡214153 [3]三重大学,日本三重县津市514-8570 [4]江苏科技大学土木工程与建筑学院,江苏镇江212005

出　　处：《混凝土》2021年第6期141-144,共4页Concrete

基　　金：国家青年自然科学基金(51708260);无锡城市职业技术学院重点科研课题(WXCY-2019-KZ-01);无锡城市职业技术学院科研创新团队项目(KYCXTD201801)。

摘　　要：基于多孔混凝土的干燥收缩试验,探讨孔隙率和水胶比对多孔混凝土干燥收缩特性的影响.通过对比各类试件的干燥收缩曲线,结果表明:与普通混凝土相比较,多孔混凝土的干燥收缩发展速度更快,最终干燥收缩率更小;多孔混凝土的目标孔隙率越大,其干燥收缩速度越快,最终干燥收缩率越小;水胶比对多孔混凝土干燥收缩的影响并不显著。The experiment on drying shrinkage of porous concrete was carried out to examine the influence of void ratio and water-binder ratio on drying shrinkage characteristic of porous concrete.According to the comparison and analysis of test results of drying shrinkage,the drying shrinkage of porous concrete occurs much faster than that of ordinary concrete.It was also found out that the final shrinkage ratio of porous concrete is smaller than that of ordinary concrete.The drying shrinkage was faster and the final shrinkage ratio was smaller when void ratio of porous concrete became bigger.In addition,the influence of water-binder ratio on drying shrinkage of porous concrete was not obvious.

关 键 词：多孔混凝土 干燥收缩 孔隙率 水胶比 收缩率 

分 类 号：TU528.2[建筑科学—建筑技术科学]