Strength development of mortars containing ground granulated blast-furnace slag: Effect of curing temperature and determination of apparent activation energies

被引：255

作者：

Barnett, SJ ^{[1
]}

Soutsos, MN ^{[1
]}

Millard, SG ^{[1
]}

Bungey, JH ^{[1
]}

机构：

[1] Univ Liverpool, Dept Civil Engn, Liverpool L69 3GQ, Merseyside, England

来源：

CEMENT AND CONCRETE RESEARCH | 2006年 / 36卷 / 03期

基金：

英国工程与自然科学研究理事会;

关键词：

temperature; compressive strength; granulated blast-furnace slag; apparent activation energy;

D O I：

10.1016/j.cemconres.2005.11.002

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

The strength development of mortars containing ground granulated blast-furnace slag (ggbs) and portland cement was investigated. Variables were the level of ggbs in the binder, water-binder ratio and curing temperature. All mortars gain strength more rapidly at higher temperatures and have a lower calculated ultimate strength. The early age strength is much more sensitive to temperature for higher levels of ground granulated blast-furnace slag. The calculated ultimate strength is affected to a similar degree for all ggbs levels and water-binder ratios, with only the curing temperature having a significant effect. Apparent activation energies were determined according to ASTM C1074 and were found to vary approximately linearly with ggbs level from 34 kJ/mol for portland cement mortars to around 60 kJ/mol for mortars containing 70% ggbs. The water-binder ratio appears to have little or no effect oil the apparent activation energy. (c) 2005 Elsevier Ltd. All rights reserved.

引用

页码：434 / 440

页数：7

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