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Physical and chemical properties of rice husk ash concrete under seawater

Putra Jaya, Ramadhansyah and Khairunisa, Muthusamy and Mohd Rosli, Hainin and Mohd Haziman, Wan Ibrahim and Fadzli, Mohamed Nazri and Mohd Fadzil, Arshad (2018) Physical and chemical properties of rice husk ash concrete under seawater. International Journal of Integrated Engineering, 10 (4). pp. 165-169. ISSN 2229-838X (Print); 2600-7916 (Online)

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Abstract

The physical and chemical properties of rice rusk ash concrete under seawater attack are evaluated based on thermogravimetric analysis, X-ray diffraction, and scanning electron microscopy. A rice husk ash (RHA) dosage of 10% by weight of binder was used throughout the experiments. The results clearly showed that RHA can be satisfactorily used as a cement replacement material in order to increases the durability of concrete under seawater attack. The used of RHA as cement replacement in concrete reduced the quantities of ettringite and gypsum formation. The results indicated that blended cement prepared with RHA reduced the potential for the formation of ettringite and gypsum due to the reduction in the quantity of calcium hydroxide and C3A, and thus improved the resistance of concrete to seawater attack. Furthermore, more formation of ettringite and gypsum was observed from Portland cement concrete compared to the RHA blended cement. Finally, it can be concluded that calcium hydroxide (Ca(OH)2) can be reduce when ground RHA is used as partially replacement cement.

Item Type: Article
Uncontrolled Keywords: Physical; Chemical; Concrete; Seawater; Rice husk ash
Subjects: T Technology > TH Building construction
Faculty/Division: Faculty of Civil Engineering & Earth Resources
Depositing User: PM Dr. Ramdhansyah Putra Jaya
Date Deposited: 22 Nov 2018 03:47
Last Modified: 22 Nov 2018 03:47
URI: http://umpir.ump.edu.my/id/eprint/22519
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