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Hydration analysis of agricultural residue ash admixtured cement paste

Author:

Barathan, S. and Gobinath, B.

Subject Area:

Physical Sciences and Engineering

Abstract:

Rice straw ash and wood ash were admixtured at various weight percentages with cement and its effect on hydration was explored in this report. The ash particles under 75 micron size were mixed together at four different percentages and added to cement as a partial replacement and the samples were hydrated for various time periods from 1 hour to 4 weeks. The samples were analyzed with FTIR, XRD and SEM techniques to characterize the hydration kinetics and to understand the changes occurring in mineral compounds during their modification into hydrated mineral compounds. The results were compared with the compressive strength measurements in the light of available literature. The result obtained reveal a definite possibility of RSA and WA reuse.

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