Quantitative evaluation of mineral admixtures on the properties, pore structure, and durability of cement-based composites

Author:

Lee Chinlai1,Chi Maochieh2,Huang Ran3

Affiliation:

1. 1Institute of Materials Engineering, National Taiwan Ocean University, Keelung 200, Taiwan, ROC

2. 2Department of Fire Science, WuFeng University, Chiayi County 621, Taiwan, ROC

3. 3Department of Harbor and River Engineering, National Taiwan Ocean University, Keelung 200, Taiwan, ROC

Abstract

AbstractThe influence of water/cementitious material ratio, silica fume, and fly ash as partial Portland cement replacement materials on the properties, pore structure, and durability of cement-based composites was evaluated by conducting compressive strength test, mercury intrusion porosimetry test, water absorption, rapid chloride penetration test, and scanning electron microscopy (SEM). Water/cementitious material ratio, and replacement percentage of silica fume and fly ash have significant effects on the pore structure and durability of cement-based composites. Composites with silica fume or fly ash have a denser structure than the control composite on SEM micrographs. Silica fume has about 5–10 times as much effect as fly ash, according to results of multiple linear regression analyses of testing data.

Publisher

Walter de Gruyter GmbH

Subject

Materials Chemistry,Ceramics and Composites

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