Hydration Kinetics and Strength Development of Waste Paper Sludge Ash (WPSA) with Different Particle Size as Binary Blended Cement

Abdul Halim Abdul Ghani; Mohd Fadzil Arshad; Nurul Aini Salehuddin; Ahmad Ruslan Mohd Ridzuan

doi:10.4028/www.scientific.net/AMM.754-755.382

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vols. 754-755Hydration Kinetics and Strength Development of...

Hydration Kinetics and Strength Development of Waste Paper Sludge Ash (WPSA) with Different Particle Size as Binary Blended Cement

Abstract:

In this study, four types of Waste Paper Sludge Ash (WPSA) were explored for use as Supplementary Cementitious Materials (SCM) in binary system. The WPSA use varies in particle size range and surface area however similar in chemical composition. At first stage, Ordinary Portland Cement (OPC) was replaced by WPSA at 5% mass to mass basis as blended cement. Four size of WPSA was prepared which are unsieve, retained at 63μm, retained at 45μm and pan. WPSA blended cement (WPSABC) was introduced from the four size of WPSA that prepared earlier. Water to cement ratio selected was 0.50 and it keep constant at all type of blended cement. When compared with the control mix, result shows that hydration kinetics is affected by the particle size of WPSA. Pan WPSA has slightly higher peak of hydration kinetics and compressive strength of blended cement. At second stage, Pan WPSA was selected to undergo the further investigation on its performance. Pan WPSABC were prepared at replacement level of 5%, 10%, 15% and 20%, mass to mass basis. Same method and w/c ratio was used and compared with control mix. From the result, it is found that the peak for rate of heat evolution of Pan WPSABC occur earlier and slightly lower as compared to OPC. Pan WPSA also achieved it optimum strength at 5% replacement level which is more than control mix.