江西建材Issue(9)：14-17,4.
改性煤气化渣对水泥砂浆性能影响研究
Study on the Effect of Modified Coal Aasification Slag on the Properties of Mortar
摘要
Abstract
The water absorption and crushing indexes of standard sand,unmodified coal gasification slag,coal gasification slag modified by slag slurry and water glass slurry modified by slag gasification slag and the porosity,strength,frost resistance and drying shrinkage characteristics of the cement mortar prepared by them are studied by comparison.The results show that the water absorption and crushing value of the undis-turbed coal gasification slag are large,and the infiltration modification of slag slurry can physically fill the internal pores of the coal gasification slag and reduce the water absorption and crushing value.The infiltration of sodium silicate slurry can not only play the role of physical filling,but also the activation of sodium silicate can further improve the particle strength of coal gasification slag,reduce the crushing value,and im-prove the interface bonding characteristics of coal gasification slag cement slurry.The porosity,mechanical properties,frost resistance and dry shrinkage characteristics of cement mortar prepared with modified coal gasification slag are significantly improved.The modified coal gasifica-tion slag infiltrated by water glass slurry is superior to the pure slag slurry in improving the bending strength and freezing resistance of mortar.The modification effect of dry shrinkage is similar to that of pure slag slurry.关键词
煤气化渣/改性/砂浆/压碎指标/强度Key words
Coal gasification slag/Modify/Mortor/Crushing value index/Strength分类
建筑与水利引用本文复制引用
程臻赟,王占银,傅博,雷华,苏梦,丁楠,陈美庆..改性煤气化渣对水泥砂浆性能影响研究[J].江西建材,2024,(9):14-17,4.基金项目
宁夏回族自治区重点研发计划项目《煤化工典型固废制备绿色建材关键技术研究与工程示范》(项目编号:2023BEG02045). （项目编号:2023BEG02045）
