广西水利水电Issue(2)：1-5,5.
硅质岩活性细骨料混凝土性能试验研究
Experimental study on properties of siliceous rock active fine aggregate concrete
摘要
Abstract
In order to study the inhibitory effect of double blended fly ash and shrinkage reducing anti-cracking wa-ter reducing agent on the alkaline activity of siliceous rock active aggregate,analysis on alkali activity and mineral composition of aggregate as well as research on mechanical properties and micromorphology of concrete were con-ducted.The results of study demonstrate that doule blended fly ash with a fly ash content of 30%and shrinkage re-ducing anti cracking water-reducing agent can effectively inhibit the alkali activity of siliceous rock;the compres-sive strength,splitting tensile strength,and elastic modulus of siliceous rock artificial sand concrete at 90d are low-er than those of dolomite sand concrete,with a decrease of 5%,6%,and 7%respectively.The addition of fly ash re-duces the alkali concentration in the pore solution of cement slurry,improves the pore structure of concrete,and ef-fectively inhibits the reaction of alkali aggregate.关键词
硅质岩人工砂/碱活性/抗压强度/劈裂抗拉强度/静压弹性模量/微观形貌Key words
siliceous rock artificial sand/alkali reactivity/compressive strength/splitting tensile strength/static pres-sure elastic modulus/micromorphology分类
建筑与水利引用本文复制引用
刘鲁强,黄卓杰,饶聪,顾业莲,黄小兵..硅质岩活性细骨料混凝土性能试验研究[J].广西水利水电,2025,(2):1-5,5.基金项目
水利部重大科技项目(SKS-2022107). （SKS-2022107）
