粉煤灰和硅粉对碾压混凝土抗裂性能的影响  

Influence of Fly Ash and Silica Fume on Cracking Resistance of RCC

作　　者：刘数华[1] 方坤河[1] 曾力[1] 

机构地区：[1]武汉大学水资源与水电工程科学国家重点实验室,430072

出　　处：《混凝土与水泥制品》2005年第2期12-13,52,共3页China Concrete and Cement Products

基　　金：九五国家科技攻关项目[(95-220-02-01-06(2)]

摘　　要：在对某工程碾压混凝土配合比进行优化的基础上,通过试验测定掺入粉煤灰、硅粉后碾压混凝土的抗拉强度、脆性系数,弹强比和极限拉伸值等性能,论述了复掺粉煤灰和硅粉可以提高碾压混凝土的抗裂性能,同时对其机理进行了分析。Based on optimization of a RCC proportion in an egineering and then experimental measuring the properties of this concrete, including the tensile strength, the brittleness coefficient, the ratio of elastic modulus to compressive strength and the ultimate extension value of the concrete, it has been expounded and proved that the cracking resistance of RCC can be enhanced by adding together with fly ash and silica fume. Meanwhile, the mechanism related is discussed.

关 键 词：碾压混凝土 抗裂性 抗裂机理 粉煤灰 硅粉 

分 类 号：TU528[建筑科学—建筑技术科学]