Properties of Blended Cements Made from Rice Husk Ash


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Title: Properties of Blended Cements Made from Rice Husk Ash

Author(s): P. K. Mehta

Publication: Journal Proceedings

Volume: 74

Issue: 9

Appears on pages(s): 440-442

Keywords: acid resistance; alkali-aggregate reactions;blended cements; cements; compressive strength; economics;hydraulic cements; lime cements; mortars (material): research;rice; silica; waste treatment.

Date: 9/1/1977

Rice husk ash containing silica in a highly reactive form is found to be an excellent ingredient for making either lime-rice husk ash or Portland-rice husk ash cements. Properties of both types of cements were investigated by standard ASTM test procedures. Due to relatively high water demand, the lime-rice husk ash cement developed lower compressive strengths. However, the strength characteristics are considered adequate for general masonry work. Portland-rice husk ash cements containing up to 50 percent ash showed compressive strengths which were considerably higher than the control portland cements even at early ages of 3 and 7 days, Test data is presented to show that a unique property of the cements containing rice husk ash is their excellent resistance to dilute organic and mineral acids.