Development of engineered cementitious composites with post-processed sugarcane bagasse ash as sand replacement
This study aims to evaluate the effect of the incorporation of sugarcane bagasse ash sand (BS) as a partial replacement to silica sand on the properties of engineered cementitious composite (ECC). ECC mixtures with different replacement levels of sand (including 0%, 25%, and 50% by volume) with BS were produced. To characterize the mechanical properties of all produced ECC mixtures, compressive and uniaxial tensile tests were carried out. Sugarcane bagasse ash (SCBA) utilized in this study was collected from a sugar mill in Louisiana, and further processed by drying, sieving, and burning to produce BS. The experimental characterization of BS revealed that it consists of a combination of different particle sizes and shapes (i.e., spherical, prismatic, and irregular) and a high content of silica. In the context of ECC properties, while 25% sand replacement with BS did not lead to an increase in compressive strength, the results showed that ECC mixture with 50% sand replaced with BS demonstrated higher compressive strength than control ECC. Furthermore, ECCs implementing 25% and 50% sand replacement with BS exhibited higher tensile strength and tensile strain capacity compared to the control ECC. The improvements in compressive and tensile strength were attributed to the filler effect and potential pozzolanic activity of BS. On the other hand, enhancements in tensile ductility were likely ascribed to an enhanced fiber dispersion and a reduction in the matrix fracture toughness due to the fine particle size of BS.
Publication Source (Journal or Book title)
Tran-SET 2020 - Proceedings of the Tran-SET Conference 2020
Noorvand, H., Arce, G., Subedi, S., Hassan, M., Barbato, M., & Bigdeli, Y. (2021). Development of engineered cementitious composites with post-processed sugarcane bagasse ash as sand replacement. Tran-SET 2020 - Proceedings of the Tran-SET Conference 2020, 226-236. https://doi.org/10.1061/9780784483305.023