粉煤灰高性能混凝土胶凝材料体系水化热研究  

Research on Hydration Heat Law of High Performance Concrete Mixed with GradeⅡFly Ash

作　　者：贾佳 张超 

机构地区：[1]新疆德广众合质检技术服务有限公司,新疆乌鲁木齐830000

出　　处：《混凝土世界》2023年第1期23-27,共5页China Concrete

摘　　要：将Ⅱ级粉煤灰掺入到高性能混凝土中,研究其在龄期、水胶比、掺量分别发生变化的情况下,高性能混凝土水化热变化规律。通过试验研究发现:低水胶比情况下,使用P·O 42.5R水泥和Ⅱ级粉煤灰时,其3d、7d龄期水化热小于同水胶比下的中热、低热硅酸盐水泥。随着我国各类基础设施建设的蓬勃发展,大体积混凝土的应用越来越频繁,系统的进行相关研究工作,可以有针对性的发现其温度变化规律,对于工程应用有现实意义和指导作用。The hydration heat development law of high performance concrete(HPC)with gradeⅡfly ash as ultrafine admixture was studied under different age,water binder ratio and dosage.Through the experimental study,it is found that the hydration heat of P·O 42.5R cement and gradeⅡfly ash is less than that of moderate heat Portland cement and low heat Portland cement with the same water binder ratio.With the development of China’s housing,bridge and water conservancy industry,the application of mass concrete is increasingly extensive,so the systematic experimental research can effectively find the temperature change law,which has an irreplaceable role for engineering application.

关 键 词：不同掺量 Ⅱ级粉煤灰 高性能混凝土 水化热 

分 类 号：TU528[建筑科学—建筑技术科学]