粉煤灰和矿粉对自密实混凝土抗冻性能影响的试验研究  

Study on frost resistance of self- compacting concrete with fly ash and slag

作　　者：刘清[1] 张萌[1] 韩霞[1] 谢世光[1] 高金东[1] 

机构地区：[1]新疆大学建筑工程学院,新疆乌鲁木齐830047

出　　处：《混凝土》2016年第10期84-86,94,共4页Concrete

基　　金：国家自然科学基金资助项目(51368057);国家自然科学基金资助项目(51468061)

摘　　要：为了进一步研究掺入粉煤灰和矿粉后自密实混凝土抗冻性能,以40%胶凝材料取代率为基础,分别取:1矿粉掺量10%,粉煤灰掺量30%;2矿粉掺量20%,粉煤灰掺量20%;3矿粉掺量30%,粉煤灰掺量10%;三组取代率配制自密实混凝土进行冻融循环试验。结果表明:当矿粉掺量取代率为30%,粉煤灰掺量10%时,自密实混凝土的抗冻性能指标最佳,且自密实混凝土28 d立方体抗压强度较好。To study the frost resistance of self-compacting concrete with incorporating fly ash and slag, it tested three different ratios based on 40% of cementitious material replace rate： ①the ratio of slag is 10%, the ratio of fly ash is 30%; ②the ratio of slag is 20%, the ra- tio of fly ash is 20%; ③the ratio of slag is 30%,the ratio of fly ash is 10%;the tests of self-compacting concrete subjected to freeze-thaw cy- cles were done with above these.The results show that the best frost resistance indices of self-compacting concrete when the slag ratio is 30% and the fly ash ratio is 10%.At the same time ,the 28d cube compressive strength of self-compacting concrete is better.

关 键 词：自密实混凝土 粉煤灰 矿粉 抗冻性能指标 

分 类 号：TU528.041[建筑科学—建筑技术科学]