Cementitious binder from fly ash and other industrial wastes

被引：117

作者：

Singh, M ^{[1
]}

Garg, M ^{[1
]}

机构：

[1] Cent Bldg Res Inst, Roorkee 247667, Uttar Pradesh, India

来源：

CEMENT AND CONCRETE RESEARCH | 1999年 / 29卷 / 03期

关键词：

fly ash; cement; waste management; ettringite;

D O I：

10.1016/S0008-8846(98)00210-5

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

in this paper, investigations were undertaken to formulate cementitious binder by judicious blending of fly ash with Portland cement as well as by admiring fly ash with calcined phosphogypsum, fluorogypsum; lime sludge, and chemical activators of different finenesses. The effect of addition of calcined clay in these types of binders was studied. Data showed that cementitious binders of high compressive strength and water retentivity can be produced. The strength of masonry mortars increased with the addition of chemical activators. The strength development of binders takes place through formation of ettringite, C-S-H, and C(4)AH(13). The binders are eminently suitable for partial replacement (up to 25%) of the cement in concrete without any detrimental affect on the strength. The results showed that fly ash can be used in the range from 45% to 70% in formulating these binders along with other industrial wastes to help in mitigating environmental pollution. (C) 1999 Elsevier Science Ltd. All rights reserved.

引用

页码：309 / 314

页数：6

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