The Effect of Three Different Types of Rice Husk Ash as Ad Mixture for Ordinary Portland Cement

Abstract:

The effect of three different types of rice husk ash which distinguish by color, pink, grey and white ashes were used as admixture to ordinary Portland cement paste was studied. Six batches of cement paste was prepared by adding 0-50 wt % RHA. The chemical and mineralogical characteristics of RHA were first analyzed. The characteristic of cement paste was investigated using IR, TGA and XRD. Hydration temperature also recorded. Chemical analysis shows higher amount of silica in RHA which is in range of 95-98wt. %. XRD and IR confirmed the white RHA is amorphous silica. The optimum amount of RHA addition was 10 wt. % which produced comparable properties with cement paste control. Based on Calorimetery Studied, IR, TG and hydration temperature results, white silica was found the most reactive silica but plays limited role as admixture in OPC paste.Keywords: rice husk ash, ordinary Portland cement, cement paste, hydration temperature

• Periodical: Applied Mechanics and Materials (Volume 679)
• Pages: 228-236
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.679.228
• Online since: October 2014
• Authors: Karya Sinulingga*, Harry Agusnar, Zakaria Mohd Amin, Basuki Wirjosentono
• Keywords: Cement Paste, Hydration Temperature, Ordinary Portland Cement, Rice Husk Ash

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