硅酸盐通报2025，Vol.44Issue(7)：2437-2446,10.DOI:10.16552/j.cnki.issn1001-1625.2024.1591
抛填骨料混凝土单轴受压细观模拟研究
Mesoscopic Simulation Study on Uniaxial Compression of Distributing-Filling Coarse Aggregate Concrete
摘要
Abstract
In this paper,a two-dimensional concrete mesoscopic model containing macropores was established based on the random aggregate model.Based on verifying the reliability of the model,the damage and failure process of distributing-filling coarse aggregate(DFCA)concrete was studied,and the influences of different macro-porosities and DFC A ratios on the mechanical behavior of concrete were analyzed.The results indicate that,the damage in DFCA concrete first occurs near macropores and the interfacial transition zone of the reference aggregate,then develops in the interfacial transition zone of the DFCA,and finally develops to the mortar matrix.With the increase of macro-porosity,the compressive strength and elastic modulus of concrete decrease,and the increase of DFCA ratio weakens the influence of macropores on the properties of concrete.Under different DFCA ratios,the compressive strength and elastic modulus of concrete show a trend of first increase and then decrease.When the DFCA ratio is 20％,the compressive strength and elastic modulus of concrete reach their maximum values.关键词
抛填骨料混凝土/细观模拟/单轴受压/破坏模式/宏观孔孔隙率/裂纹扩展Key words
distributing-filling coarse aggregate concrete/mesoscopic simulation/uniaxial compression/failure mode/macro-porosity/crack growth分类
建筑与水利引用本文复制引用
黄胜,孙江涛,李志堂,朱子龙,沈卫国,孙志军,谭宗林,王桂明..抛填骨料混凝土单轴受压细观模拟研究[J].硅酸盐通报,2025,44(7):2437-2446,10.基金项目
广西交投科技项目(20231h0427) （20231h0427）
保利长大工程有限公司科技项目(202401hx0141) （202401hx0141）
