Portland cement-blast furnace slag mortars activated using waterglass: - Part 1: Effect of slag replacement and alkali concentration

被引：47

作者：

Acevedo-Martinez, E. ^{[1
]}

Gomez-Zamorano, L. Y. ^{[1
]}

Escalante-Garcia, J. I. ^{[1
]}

机构：

[1] Ctr Invest & Estudios Avanzados IPN Cinvestav, Unidad Saltillo, Saltillo, Coah, Mexico

来源：

CONSTRUCTION AND BUILDING MATERIALS | 2012年 / 37卷

关键词：

Hydration; Microstructure; Backscattered electron imaging; Alkali activated slag; Blast furnace slag; Nonevaporable water; Compressive strength; MECHANICAL-PROPERTIES; STRENGTH DEVELOPMENT; BLENDED CEMENTS; FLY-ASH; HYDRATION; MICROSTRUCTURE; TEMPERATURES; REACTIVITY;

D O I：

10.1016/j.conbuildmat.2012.07.041

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

Mortars of PC replaced with 0% to 100% blast furnace slag were activated by waterglass at 0-10 wt.% of Na2O, aiming to investigate the effect of the alkaline activation in reducing the low early strength observed in Portland cement-slag blends. For the activated blended mortars, increased %Na2O and slag contents favored strength; 80% slag showed favorable results with 6 and 10%Na2O, while 30-50% slag, the presence of the alkaline activator was unfavorable relative to the non-activated Portland cement and slag mortars. The microstructures showed denser matrices of hydration products as the amount of slag and alkali concentration were increased, corresponding to the strength observations. (C) 2012 Elsevier Ltd. All rights reserved.

引用

页码：462 / 469

页数：8

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