复合矿物掺合料对高性能混凝土强度的影响研究  

Study on the Influence of Composite Mineral Admixtures on the Strength of High Performance Concrete

作　　者：车正章 Che Zhengzhang(Guizhou Highway Engineering Group Co.Ltd.,Guiyang,Guizhou 550001)

机构地区：[1]贵州公路工程集团有限公司,贵州贵阳550001

出　　处：《江西建材》2024年第4期17-19,共3页

摘　　要：文中围绕复合矿物掺合料对高性能混凝土长期强度和干燥收缩性能的影响展开研究。结果显示,20%掺量的水泥-粉煤灰体系的混凝土长期强度表现最佳,同时能降低19.81%的干缩率。若单一改善混凝土的收缩性能,可使用10%掺量水泥-矿粉-粉煤灰体系,能降低混凝土24.13%的干缩率,也可选择适合的混凝土体系,调整掺量,得到性能最合适的混凝土配比。In this paper,the effects of composite mineral admixtures on the long-term strength and drying shrinkage performance of high per-formance concrete were studied.The results show that the long-term strength of concrete with 20%cement-fly ash system is the best,and the dry shrinkage rate can be reduced by 19.81%.In order to improve the shrinkage performance of concrete,the system of 10%cement-miner-al powder-fly ash can be used,which can reduce the dry shrinkage rate of concrete by 24.13%.The most suitable concrete ratio can be ob-tained by selecting suitable concrete system and adjusting the dosage.

关 键 词：高性能混凝土 长期强度 干燥收缩 

分 类 号：U444[建筑科学—桥梁与隧道工程]