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Characterization of high-strength concrete by Preferential supplant of scrap tyre rubber powder-bambara nut shell ash constituent: utilization of novel waste materials in concrete

Characterization of high-strength concrete by Preferential supplant of scrap tyre rubber... Concrete is an artificial matrix with water, cement, and fine and coarse aggregates. Adding mineral admixtures and waste materials to concrete has evolved into a spectacular achievement nowadays. The current investigation replaces cement with mineral admixtures such as silica fume (SF) and ground granulated blast-furnace slag (GGBS). Scrap Tyre Rubber Powder (STRP) and Bambara Nut Shell Ash (BNSA) are two regionally significant waste materials used to replace fine aggregates. The workability, strength, and durability of M25 grade concrete were determined using concrete specimens at a constant replacement of cement by 10% of SF and 20% of GGBS, and fine aggregate partial replacement at 5%, 10%, 15%, and 20% of STRP and BNSA. The workability of green concrete, compressive, flexural, and splitting tensile strengths at 7, 14, and 28 days of curing and durability (sulphate attack) at 90 days of curing were conducted and correlated with conventional concrete. Test results showed the concrete performed better at partially replacing the cement with 30% admixture (SF-GGBS) and fine aggregate with 15% waste material (STRP-BNSA). The workability improved by 12.24% (slump) and 8.89% (compaction factor), and the gain in concrete strength at 28 days was 21.04% (compressive) and 18.34% (splitting tensile) than conventional mix. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Journal of Building Pathology and Rehabilitation Springer Journals

Characterization of high-strength concrete by Preferential supplant of scrap tyre rubber powder-bambara nut shell ash constituent: utilization of novel waste materials in concrete

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References (26)

Publisher
Springer Journals
Copyright
Copyright © The Author(s), under exclusive licence to Springer Nature Switzerland AG 2022. Springer Nature or its licensor (e.g. a society or other partner) holds exclusive rights to this article under a publishing agreement with the author(s) or other rightsholder(s); author self-archiving of the accepted manuscript version of this article is solely governed by the terms of such publishing agreement and applicable law.
ISSN
2365-3159
eISSN
2365-3167
DOI
10.1007/s41024-022-00261-3
Publisher site
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Abstract

Concrete is an artificial matrix with water, cement, and fine and coarse aggregates. Adding mineral admixtures and waste materials to concrete has evolved into a spectacular achievement nowadays. The current investigation replaces cement with mineral admixtures such as silica fume (SF) and ground granulated blast-furnace slag (GGBS). Scrap Tyre Rubber Powder (STRP) and Bambara Nut Shell Ash (BNSA) are two regionally significant waste materials used to replace fine aggregates. The workability, strength, and durability of M25 grade concrete were determined using concrete specimens at a constant replacement of cement by 10% of SF and 20% of GGBS, and fine aggregate partial replacement at 5%, 10%, 15%, and 20% of STRP and BNSA. The workability of green concrete, compressive, flexural, and splitting tensile strengths at 7, 14, and 28 days of curing and durability (sulphate attack) at 90 days of curing were conducted and correlated with conventional concrete. Test results showed the concrete performed better at partially replacing the cement with 30% admixture (SF-GGBS) and fine aggregate with 15% waste material (STRP-BNSA). The workability improved by 12.24% (slump) and 8.89% (compaction factor), and the gain in concrete strength at 28 days was 21.04% (compressive) and 18.34% (splitting tensile) than conventional mix.

Journal

Journal of Building Pathology and Rehabilitation – Springer Journals

Published: Jun 1, 2023

Keywords: Silica fume; Ground granulated blast-furnace slag; Scrap tyre rubber powder; Particle size distribution; Durable properties

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