高细混合材料对水泥复合体系粒度分布的影响  

Influence of High Fineness Additives on Particle Size Distribution Cement Based Composite System

作　　者：张大康[1] 

机构地区：[1]拉法基瑞安(北京)技术服务有限公司重庆分公司,重庆400010

出　　处：《武汉理工大学学报》2009年第14期15-18,22,共5页Journal of Wuhan University of Technology

摘　　要：按正交设计进行了多组不同比例P.Ⅰ型42.5R硅酸盐水泥、矿渣粉、预分解窑窑灰和粉煤灰的性能实验,旨在考察对水泥粒度分布的影响。结果表明,在P.Ⅰ水泥中加入6%预分解窑窑灰,30%矿渣粉后,水泥粒径<5μm的累计筛析通过量由20.2%增加到31.9%。高细混合材料,特别是预分解窑窑灰含有的大量数微米的颗粒,可以使水泥复合体系粒度分布更加接近Fuller曲线,从而提高堆积密度。This paper aims to research the influence mineral additives on the particle size distribution of cement based composite system. P·Ⅰ 42.5R cement, slag powder, NSP kiln dust and fly ash are considered in this composite system. The accumulative sieve analysis shows that amount of particles with diameter below 5μm goes up from 20.2% to 31.9% with 6% NSP kiln dust and 60%？ slag powder adding into the cement. The large amount of particles with diameter of several microns in the high fineness additives, especially for the NSP kiln dust, can make the particle distribution much more accordant with the Fuller curve. Therefore, the packing density of the composite system can be increased.

关 键 词：预分解窑窑灰 矿渣粉 粒度分布 堆积密度 

分 类 号：TQ172.13[化学工程—水泥工业]