Influence of fineness of rice husk ash and additives on the properties of lightweight aggregate
Journal article
Authors/Editors
Strategic Research Themes
No matching items found.
Publication Details
Author list: Chindaprasirt P., Jaturapitakkul C., Rattanasak U.
Publisher: Elsevier
Publication year: 2009
Journal: Fuel: The Science and Technology of Fuel and Energy (0016-2361)
Volume number: 88
Issue number: 1
Start page: 158
End page: 162
Number of pages: 5
ISSN: 0016-2361
Languages: English-Great Britain (EN-GB)
View in Web of Science | View on publisher site | View citing articles in Web of Science
Abstract
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/cm3 was achieved. ฉ 2008 Elsevier Ltd. All rights reserved.
Keywords
Disintegration, Lightweight aggregate
Contact Information