Quantitative Study of Hydration of PPC-FA Based using Powder X-Ray Diffraction

Abstract Pozzolana is the most commonly used mineral in cement industry. Pozzolana doesn’t possess cementitious property on its own but derives its strength by reacting in the presence of moisture with calcium hydroxide formed as a result of hydration. The pozzolanic reaction is slow and required high pH and calcium ion content. This paper deals with study the PPC-FA based cement conforming to IS 1489 Part 1:2015. The LSM, AR, SR, Degree of sulphurization, Burnability Index, Burnability Factor and Percentage Liquid is obtained for the cement using X-Ray diffraction analysis. The hydration of the cement is also studied for 1 day,3 days,7 days,14 days,21 days,28 days and 56 days of curing. The samples for initial setting and final setting of cement obtained as per IS 4031 Part 5:1988 were also analysed for X-Ray diffraction analysis. The paper presents a procedure for sample preparation, X-Ray analysis of cement and cement slurries, identification of phases in cement, identification of silicate hydrates, AFm and AFt phases, percentage variation of these phases and rate of change. The changes in the phases occurring are checked by performing physical tests on cement and cement mortar cubes.

Keywords pH, LSM, AR, SR, AFm, Aft, X-Ray diffraction.

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Quantitative Study of Hydration of PPC-FA Based using Powder X-Ray Diffraction

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