Characterization, microstructure properties and impurities removal of treated rice husk ash (TRHA) as supplementary cementing material (SCM) in concrete using hydrochloric acid pretreatment process

Saad, Siti Asmahani and Nuruddin, Muhd Fadhil and Shafiq, Nasir and Ali, Maisarah (2015) Characterization, microstructure properties and impurities removal of treated rice husk ash (TRHA) as supplementary cementing material (SCM) in concrete using hydrochloric acid pretreatment process. Journal of Applied Science and Agriculture, 10 (3). pp. 1-4. ISSN 1816-9112

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Abstract

Recently, the need towards production of environmental friendly and excellent performance cementitious material has been outlined properly. Based on extensive researches done since 1970s, it is proven that rice husk ash (RHA) is silica-rich material and hence categorized as pozzolans in concrete. Nevertheless, the usage of this material in real construction industries is still under expectation. This is simply due to instability of the chemical components, especially amorphous silica content in the material after burning process. The aim of this paper is to present the characteristics and unwanted metal leaching evaluation of treated rice husk ash (TRHA) to be utilized as supplementary cementing material (SCM) in concrete. In this regard, raw rice husk was treated by adopting hydrochloric acid (HCl) pretreatment method prior to burning process. Several tests have been conducted to analyze the chemical compositions, specific surface are (SSA), microstructure properties and concentration of alkali metalremoval of TRHA and compared to non-treated rice husk ash (NTRHA). In this paper, the effect of soaking time in acid solution from 1 to 4 hours is also presented and discussed accordingly.

Item Type:	Article (Journal)
Additional Information:	4627/44068
Uncontrolled Keywords:	Supplementary cementing material Treated rice husk ash Microstructure properties Alkali metal removal
Subjects:	T Technology > TA Engineering (General). Civil engineering (General) > TA401 Materials of engineering and construction
Kulliyyahs/Centres/Divisions/Institutes (Can select more than one option. Press CONTROL button):	Kulliyyah of Engineering > Department of Manufacturing and Materials Engineering
Depositing User:	Prof Ir Maisarah Ali
Date Deposited:	04 Aug 2015 08:54
Last Modified:	17 Nov 2017 14:44
URI:	http://irep.iium.edu.my/id/eprint/44068

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