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

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dc.contributor.author Ubolluk Rattanasak
dc.contributor.author Parinya Chindaprasirt
dc.contributor.author Chai Jaturapitakkul
dc.contributor.other Faculty of Science
dc.date.accessioned 2019-03-25T09:14:53Z
dc.date.available 2019-03-25T09:14:53Z
dc.date.issued 2009
dc.identifier.uri http://dspace.lib.buu.ac.th/xmlui/handle/1234567890/2447
dc.description.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. th_TH
dc.language.iso eng th_TH
dc.subject Disintegration th_TH
dc.subject Lightweight aggregate th_TH
dc.subject Rice husk ash th_TH
dc.subject Sodium hydroxide th_TH
dc.subject Solubility th_TH
dc.title Influence of fineness of rice husk ash and additives on the properties of lightweight aggregate th_TH
dc.type บทความวารสาร th_TH
dc.issue 1
dc.volume 8
dc.year 2009
dc.journal Fuel.
dc.page 158-162.

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