浅谈高石粉含量全机制砂预拌混凝土配合比设计  

High content of stone on the mechanism of concrete mixture ratio design of sand

作　　者：袁世宝 

机构地区：[1]湖南东方建设股份有限公司,湖南邵阳422001

出　　处：《中国包装科技博览（混凝土技术）》2012年第9期28-31,共4页China Science and Technology Review

摘　　要：本文利用机制砂作为预拌混凝土中的细集料进行配合比设计，针对机制砂中石粉含量偏高的特点，主要从混凝土的物理性能、力学性能等方面进行配合比设计。结果表明：当机制砂的亚甲蓝值MB小于1.0时，利用石粉含量在18％以下的机制砂作为中低强度等级混凝土的细集料是完全可行的，能够起到减少投资、保护环境、节约资源的目的。This paper use sand mechanism as ready-mixed concrete for the fine aggregate mixture ratio design, in view of the mechanism of high content of stone in sand, characteristics, main from the physical properties of the concrete and mechanical properties of mix design. The result shows that： when mechanism of sand methylene blue value is less than 1.0 MB, cement content below 18% of the mechanism of the sand as low intensity level of fine aggregate concrete is completely feasible, can rise to reduce investment, protect the environment and save resources purpose.

关 键 词：机制砂 预拌混凝土 石粉含量 物理性能 力学性能 

分 类 号：TU528.52[建筑科学—建筑技术科学]