惰性石粉在预拌混凝土中的应用技术初探  

Research on application technology of inert powder in ready mixed concrete

作　　者：桂苗苗[1] 曾冲盛[1] 江达宣[1] 龚明子[1] 

机构地区：[1]厦门市建筑科学研究院集团股份有限公司,福建厦门361004

出　　处：《新型建筑材料》2014年第9期6-10,94,共6页New Building Materials

摘　　要：采用惰性石粉分别与粉煤灰、矿粉复掺,研究惰性石粉对混凝土工作性、强度、碳化性能、抗氯离子渗透性能、收缩性能的影响,探索惰性石粉在预拌混凝土中的应用技术。结果表明,惰性石粉与矿粉复掺具有较大可行性,当惰性石粉掺量小于15%时,对混凝土的力学性能和耐久性无明显影响;惰性石粉与粉煤灰复掺,会降低低标号混凝土的强度、抗碳化性能及抗氯离子渗透性能。In this paper, using complex mix of inert powder with fly ash and slag, the effects of inert powder on the workabil- ity, strength,carbonation, chloride ion penetration resistance performance, shrinkage of ready mixed concrete were researched to ex- plore the application technology of inert powder in ready mixed concrete. It was showed that inert powder mixed with slag was greatly feasible. When inert powder content is less than 15% of the cementitious material, inert powder has no obvious effect on the durability and mechanical properties of concrete. Inert powder mixed with fly ash will reduce the low-grade concrete strength, carbonation and chloride ion permeability.

关 键 词：花岗岩粉 大理石粉 工作性 强度 碳化性能 抗氯离子渗透性能 收缩率 

分 类 号：TU528.52[建筑科学—建筑技术科学]