摘要
Abstract
Based on the ternary quadratic orthogonal rotation experiment, the fast mortar stick method was used to determine the expansion rate and strength of the specimens,and then the regression equation with the expansion rate as the dependent variable Y was obtained.The inhibition of alkali-silicic acid re-action and the interaction between them under three factors were analyzed.The results show that when the fly ash content is at least 16%,all the mortar specimens expansion rate can be reduced to 0.1%,and the minimum mortar specimens expansion rate of 0.045%appears when the fly ash content is 26.8%.When the slag content changes,the change degree of alkali-silicic acid reaction is not obvious,but the expan-sion rate is less than the specified requirement, and the slag powder content can be controlled at about 20% ~30%.Fly ash and slag, fly ash and Al2(SO4)3, slag and Al2(SO4)3have positive effects on ASR expansion rate.The influence rule of alkali -silicic acid reaction and the best factor combination when satisfying the strength requirement are obtained,which can provide reference for engineering appli-cation.关键词
碱-硅酸反应/正交旋转设计/复合抑制剂/快速砂浆棒法/最佳因子组合Key words
Alkali-silica reaction(ASR)/orthogonal rotation design/compound inhibitor/testing meth-od of fast mortar stick/optimum combination分类
建筑与水利
