Effect of W/B ratios on pozzolanic reaction of biomass ashes in Portland cement matrix

被引：144

作者：

Sata, V. ^{[1
]}

Tangpagasit, J. ^{[2
]}

Jaturapitakkul, C. ^{[3
]}

Chindaprasirt, P. ^{[1
]}

机构：

[1] Khon Kaen Univ, Dept Civil Engn, Sustainable Infrastruct Res & Dev Ctr, Khon Kaen 40002, Thailand

[2] Rajamangala Univ Technol Thanyaburi, Dept Civil Engn, Pathum Thani 12110, Thailand

[3] King Mongkuts Univ Technol Thonburi, Dept Civil Engn, Bangkok 10140, Thailand

来源：

CEMENT & CONCRETE COMPOSITES | 2012年 / 34卷 / 01期

关键词：

Pozzolanic reaction; Biomass ash; Rice husk-bark ash; Palm oil fuel ash; Thailand; OIL FUEL ASH; FLY-ASH; STRENGTH; CONCRETE; MORTARS;

D O I：

10.1016/j.cemconcomp.2011.09.003

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

In this study, the effects of W/B ratios on pozzolanic reaction of by-product biomass ashes, namely rice husk bark ash (RHBA) and palm oil fuel ash (POFA), were determined. These biomass ashes were ground to the same fineness as that of Type I Portland cement (OPC) and partially replaced OPC at replacement levels of 10-40% by weight of binder. Water to binder (W/B) ratios of 0.50, 0.575, and 0.65 were used. The compressive strengths of mortars were compared to those of mortars made with OPC partially replaced with ground river sand of similar particle size. The results demonstrate that at the same cement replacement levels, the degrees of pozzolanic reaction of RHBA and POFA increase with W/B ratio. In addition, ground river sand with the same particle size of OPC can be used as a non-reactive material to replace OPC for determining the compressive strength due to pozzolanic reaction of biomass ash. (C) 2011 Elsevier Ltd. All rights reserved.

引用

页码：94 / 100

页数：7

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