煤矿安全2024，Vol.55Issue(5)：180-187,8.DOI:10.13347/j.cnki.mkaq.20231081
黄土-矿渣基新型胶结充填材料强度特性试验研究
Experimental study on strength characteristics of a new type of cementitious filling material based on loess and slag
摘要
Abstract
In order to investigate the mechanical properties,damage mode and energy evolution of loess-slag-based cementitious filling materials under different water-cement ratios and curing ages,slump tests and uniaxial compression tests were conducted on loess-slag-based cementitious filling materials under four sets of water-cement ratios and five ages,respectively.It was found that the slump and expansion of the filling material increased with the increase of water-cement ratio.The peak strength of the material was negatively linearly correlated with the water-cement ratio and exponentially nonlinearly correlated with the age of curing.The dam-age mode of the filling material was generally shear damage,and the smaller the water-cement ratio and the longer the age of curing,the greater the damage of the filling material.The damage process of cemented material can be divided into five stages:compression density,elasticity,stable crack expansion,continuous crack expansion and post-peak damage.关键词
黄土-矿渣基胶结充填材料/水胶比/养护龄期/力学性质/破坏模式/能量演化Key words
loess-slag-based cementitious filling material/water-cement ratio/curing age/mechanical properties/damage mode/en-ergy evolution分类
矿业与冶金引用本文复制引用
顾军,陈彦龙,袁金祥,吕承贤,张家龙,张亚飞..黄土-矿渣基新型胶结充填材料强度特性试验研究[J].煤矿安全,2024,55(5):180-187,8.基金项目
新疆维吾尔自治区重大科技专项资助项目(2023A01002) （2023A01002）
国家自然科学基金资助项目(51974295) （51974295）
