Investigating the Performance of Cement Mortar containing Rice Straw Ash, Microsilica and Their Composite by Compressive Strength
Arunabh Pandey1, Brind Kumar2

1Arunabh Pandey, PhD Research Scholar, Department of Civil Engineering, IIT (BHU), Varanasi, (U.P), India.
2Brind Kumar, Associate Professor, Department of Civil Engineering, IIT (BHU), Varanasi, (U.P), India.

Manuscript received on 13 March 2019 | Revised Manuscript received on 20 March 2019 | Manuscript published on 30 March 2019 | PP: 91-94 | Volume-7 Issue-6, March 2019 | Retrieval Number: F2118037619/19©BEIESP
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Abstract: The primary objective of this research was to compare the effect of partial replacement of OPC with Rice straw ash, microsilica and their composite on the compressive strength of cement mortar. High range water reducer (HRWR) was also used to compensate for the decreased workability due to an increase in the overall surface area of the cementitious material. Its dosage for the different mix was decided by the Marsh Cone Test. Different proportion of rice straw ash and microsilica used for part replacement of OPC in the mortar were 5, 10, 15, 20, 25% and 2.5, 5, 7.5, 10% by weight of OPC respectively. The compressive strength of the mortar cubes of various proportions was determined after 3, 7, 28, 60, 90 and 365 days of curing in water. It was observed that the highest pozzolanic reaction could be achieved by mix R1M3 thus leading to increased compressive strength while the mix R2M3 could achieve both economy and relatively increased compressive strength.
Keywords: Rice Straw Ash; Mortar; Micro silica; Compressive Strength; Marsh Cone.

Scope of the Article: Composite Materials