Pore structure and its effect on strength of high-volume fly ash paste

被引：96

作者：

Jiang, LH ^{[1
]}

Guan, YG ^{[1
]}

机构：

[1] Hohai Univ, Coll Civil Engn, Nanjing 210098, Peoples R China

来源：

CEMENT AND CONCRETE RESEARCH | 1999年 / 29卷 / 04期

关键词：

mercury porosimetry; small-angle X-ray scattering; bending strength; compressive strength; fly ash;

D O I：

10.1016/S0008-8846(99)00034-4

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

Pastes made with different fly ash contents and water/binder ratios were tested at different ages. The total porosity and pore size distribution were measured by mercury intrusion. The fractal dimension of pore-solid interface was first measured by small angle X-ray scattering (SAXS), The relationship between porosity and strength for high-volume fly ash (HVFA) paste was determined. It is obtained that the pore size distribution affected both compressive strength and flexural strength, bur the effects on compressive strength and on flexural strength are different. Preliminary experimental results indicated that strength was closely related to the pore surface fractal dimension. (C) 1999 Elsevier Science Ltd. All rights reserved.

引用

页码：631 / 633

页数：3