Influence of fineness of rice husk ash and additives on the properties of lightweight aggregate

被引：49

作者：

Chindaprasirt, P. ^{[2
]}

Jaturapitakkul, C. ^{[3
]}

Rattanasak, U. ^{[1
]}

机构：

[1] Burapha Univ, Fac Sci, Dept Chem, Chon Buri 20131, Thailand

[2] Khon Kaen Univ, Fac Engn, Dept Civil Engn, Khon Kaen 40002, Thailand

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

来源：

FUEL | 2009年 / 88卷 / 01期

关键词：

Lightweight aggregate; Rice husk ash; Sodium hydroxide; Solubility; Disintegration; FUEL ASH; FLY-ASH; SILICA; RESISTANCE;

D O I：

10.1016/j.fuel.2008.07.024

中图分类号：

TE [石油、天然气工业]; TK [能源与动力工程];

学科分类号：

0807 ; 0820 ;

摘要：

In this paper, the preparation of lightweight aggregate (LWA) from rice husk ash (RHA) obtained from a biomass power plant was studied. As-received and ground RHAs were mixed with sodium hydroxide solution (NaOH) and cured to obtain the hardened sodium silicate paste. The samples were then crushed and heated to form LWA. The LWA was tested for acid and base solubility and for disintegration in boiling water. The results showed that ground RHA-LWA gave better performances in terms of expansion, solubility, and disintegration than the as-received RHA-LWA. However, the disintegration of LWA in boiling water was the main problem. It was found that the incorporation of 2-7% boric acid by weight of RHA alleviated this problem and no sign of disintegration was observed. The density of LWA of 0,20-0.40 g/cm(3) was achieved. (c) 2008 Elsevier Ltd. All rights reserved.

引用

页码：158 / 162

页数：5

共 23 条

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