Evaluation of raw bagasse Ash as sand replacement for the production of engineered cementitious composites

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Conference Proceeding

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This study aims to evaluate the possibility of using raw sugar cane bagasse ash (SCBA) as a sand replacement in engineered cementitious composites (ECC). A total of three mixtures, i.e., 0, 25%, and 50% of sand replaced with SCBA (by volume), were produced in this study. The experimental characterization of raw SCBA revealed that SCBA collected from the sugar mill consists mainly of silica and carbon with small particle size. In terms of ECC properties, the addition of SCBA caused a loss in workability and decreased the density of fresh ECC mixtures. For proper workability, higher HRWR dosages were utilized, which altered the air content of ECC mixtures (i.e., air content increased from 1.4% to 3.5%). The compressive strength of SCBA-ECC mixtures was slightly lower than the control mix. However, the tensile strength and, more markedly, the tensile ductility were enhanced compared to control. The negative effect on compressive strength was mainly attributed to the higher air content of the SCBA-ECC mixtures. The increment in ductility observed in SCBA-ECC mixtures by increasing the contents of SCBA may be attributed to the combined effect of smaller particle size of SCBA, increased air content, and the possible carbon coating of the PVA fiber.

Publication Source (Journal or Book title)

Tran-SET 2020 - Proceedings of the Tran-SET Conference 2020

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