The effect of alkali reactivity on the mechanical properties of concrete

被引：118

作者：

Ahmed, T

Burley, E

Rigden, S

Abu-Tair, AI

机构：

[1] Oxford Brookes Univ, Dept Civil Engn, Sch Architecture, Oxford OX3 0BP, England

[2] Univ London Queen Mary & Westfield Coll, Dept Engn, London E1 4NS, England

[3] Univ Ulster, Sch Built Environm, Belfast, Antrim, North Ireland

来源：

CONSTRUCTION AND BUILDING MATERIALS | 2003年 / 17卷 / 02期

关键词：

alkali silica; mechanical properties; expansion; cracks; absorption;

D O I：

10.1016/S0950-0618(02)00009-0

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

The effects of highly reactive aggregate, fused silica, and slowly reactive aggregate, Thames Valley sand, on the mechanical properties of concrete were investigated in this paper. The mechanical properties studied over a period of 12 months were the compressive strength, direct tensile strength, tensile splitting strength, flexural tensile strength (modulus of rupture), static modulus of elasticity and water absorption. The effects of both reactive aggregates on the mechanical properties of concrete were compared with that of sound concrete mix. The results presented in this investigation show that the effect of the reactive aggregates on the mechanical properties varies, depending on the type of reactive aggregate. From this study it appears that the direct tensile and static modulus of elasticity were the best indicators of reactivity. (C) 2002 Elsevier Science Ltd. All rights reserved.

引用

页码：123 / 144

页数：22