Experimental study on influence of rice husk ash on mortar compressive strength at different temperatures

An experimental study on compressive strength of mortar mixes containing different amounts of rice husk ash (5, 10, 20%) has been investigated. The impact of different elevated temperatures (150, 300, 450, 750o C) on mortar strength is also examined. The experiments found that RHA can be used in its untreated form up to 10% as cementitious replacement without detriment of mortar compressive strength. Furthermore, the addition of RHA improves the resistance of mortars at high temperatures excepting to the ones with replacement ratio of 20%.
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Experimental study on influence of rice husk ash on mortar compressive strength at different temperatures