Hydration and pore-structure characteristics of high-volume fly ash cement pastes

被引：65
|
作者：
Park, Byoungsun [1 ]
Choi, Young Cheol [2 ]
机构：
[1] Korea Univ, Dept Environm Syst Engn, Sejong Campus, Sejong Si 30019, South Korea
[2] Gachon Univ, Dept Civil & Environm Engn, Seongnam 13120, South Korea
来源：
CONSTRUCTION AND BUILDING MATERIALS | 2021年 / 278卷
基金：
新加坡国家研究基金会;
关键词：
High-volume fly ash; Degree of hydration; Pore size distribution; Surface fractal dimension; Pozzolanic reaction; HIGH-STRENGTH CONCRETE; PORTLAND-CEMENT; QUANTITATIVE-DETERMINATION; SURFACE; MICROSTRUCTURE; SYSTEMS; SILICA; RATIO; WATER;
D O I：
10.1016/j.conbuildmat.2021.122390
中图分类号：
TU [建筑科学];
学科分类号：
0813 ;
摘要：
The hydration characteristics and microstructure of HVFA cement were investigated according to the FA replacement ratio and the correlation between the degree of hydration and pore structure was analyzed. As the FA replacement ratio increased, the degree of hydration of cement increased, but the degree of reaction of FA decreased. The gel/space ratio of the HVFA cement paste showed strong correlation with the compressive strength. As the FA replacement ratio increased, the surface fractal dimension decreased in the micro region. The surface fractal dimension in the micro region showed strong correlations with the compressive strength and gel/space ratio. (C) 2021 Elsevier Ltd. All rights reserved.
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页数：13
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