硅酸盐通报2017，Vol.36Issue(9)：2880-2885,6.
干寒大温差环境下混凝土的抗裂性能、力学性能及气孔结构分析
Analysis of Crack Resistance,Mechanical Properties and Pore Size Distribution of Concrete in a Certain Environment of Dryness-Coldness and Large Range of Temperature
摘要
Abstract
Cracking process , compressive strength and 28 d pore size distribution of concrete were studied in a certain environment of dryness-coldness and large range of temperature , and the relationship between initial cracking area , pore structure and compressive strength of concrete was analyzed , and compared with the results of standard curing .The results show that in a certain environment of dryness-coldness and large range of temperature , the crack resistance and mechanical properties of concrete are worse than it is in standard curing , more concretely , the initial cracking time is shorter , the initial crack length and the crack width are larger and the total number of cracks is more .In the same curing duration , the compressive strength of concrete is smaller than that which is in a standard curing , and there is a certain correlation between compressive strength and initial cracking area of concrete .Morever , there are some differences in the pore size distribution .The main performance is that the small holes is fewer , the largeholes is more and the pore size distribution moves towards the large aperture .In addition , the water to binder ratio also has an effect on the crack resistance , compressive strength and pore size distribution of concrete.关键词
干寒/大温差/混凝土/抗裂性/抗压强度/孔径分布Key words
dryness-coldness/large range of temperature/concrete/crack resistance/compressive strength/pore size distribution分类
建筑与水利引用本文复制引用
李强,王起才,张戎令,代金鹏,康健..干寒大温差环境下混凝土的抗裂性能、力学性能及气孔结构分析[J].硅酸盐通报,2017,36(9):2880-2885,6.基金项目
国家自然科学基金( 51268032 ) （ 51268032 ）
长江学者和创新团队发展计划滚动资助 ( IRT_15R29 ) （ IRT_15R29 ）
甘肃省基础研究创新群体(145RJIA332) （145RJIA332）
青年人才托举工程(2015QNRC001) （2015QNRC001）
