高细溷合材料对水泥复合体系粒度分布的影响.pdfVIP

31 14 武 汉 理 工 大 学 学 报 Vol. 31 No. 14 2009 7 JOURNAL OF WUHAN UNIVERSITY OF TECHNOLOGY Jul.2009 DOI: 10. 3963/j. issn. 2009. 14. 004 张大康 ( () , 400010) : 按正交设计进行了多组不同比例P 型42.5R 硅酸盐水泥矿渣粉预分解窑窑灰和粉煤灰的 能实验, 旨 在考察对水泥粒度分布的影响结果表明, 在P 水泥中加入6% 预分解窑窑灰, 30% 矿渣粉后, 水泥粒径 5 m 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 : 预分解窑窑灰; 矿渣粉; 粒度分布; 堆积密度 : TQ 172. 13 : A :2009) Influence of High Fineness Additi es on Particle Size Distribution Cement Based Composite System ZH A N G Dakang ( Lafarge Shui On (Beijing) Technical Service Co Ltd Chongqing Branch, Chongqing 400010, China) Abstract: This paper aims to research the influence mineral additives on the particle size distribution of cement based com posite system. P 42.5R cement, slag powder, NSP kiln dust and fly ash are considered in this composite system. The accu mulative sieve analysis shows that amount of particles w ith diameter below 5m goes up from 20.2% to 31.9% with 6% NSP kiln dust and 60% ? slag pow der adding into the cement. The large amount of particles with diameter of several microns in the high finenessadditives, especially for the NSP kiln dust, can make the particle distribution much more accordant w ith the Fuller curve. T herefore, the packing density of the composite system can be increased. Key words: NSP kiln dust; slag pow der; particle size distribution; packing density , , [ 1, 2] , , , , [ 3] [4] ,