Sorptivity and strength of air-cured and water-cured PC-PFA-MK concrete and the influence of binder composition on carbonation depth

被引:85
作者
Bai, J [1 ]
Wild, S [1 ]
Sabir, BB [1 ]
机构
[1] Univ Glamorgan, Sch Technol, Pontypridd CF37 1DL, M Glam, Wales
基金
英国工程与自然科学研究理事会;
关键词
sorptivity; compressive strengths; metakaolin; fly ash; curing;
D O I
10.1016/S0008-8846(02)00872-4
中图分类号
TU [建筑科学];
学科分类号
0813 [建筑学];
摘要
The paper reports the influence of the composition of Portland cement-pulverised fuel ash-metakaolin (PC-PFA-MK) binders on sorptivity and strength development of PC-PFA-MK concrete cured both in air and in water and on carbonation depth, and relates this to measured changes in sorptivity of the concrete. Concrete mixtures covering four different total cement replacement levels (10%, 20%, 30% and 40%) for PC-PFA-MK concrete with various MK/PFA proportions, water and air cured for up to IS months, were investigated. The change in compressive strength and sorptivity with age at all cement replacement levels under both water and air curing are compared with those of the control PC concrete. The results presented in this paper form part of an investigation into the optimisation of a ternary blended cementitious system based on ordinary PC, PFA and MK for the development of high-performance concrete. (C) 2002 Elsevier Science Ltd. All rights reserved.
引用
收藏
页码:1813 / 1821
页数:9
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