Influence of sand to aggregate ratio on the fresh and mechanical properties of self-compacting high-performance concrete

Alshahrani, Abdullah ORCID: https://orcid.org/0000-0002-2454-3427, Cui, Tianyi and Kulasegaram, Sivakumar ORCID: https://orcid.org/0000-0002-9841-1339 2022. Influence of sand to aggregate ratio on the fresh and mechanical properties of self-compacting high-performance concrete. Presented at: The 7th World Congress on Civil, Structural, and Environmental Engineering (CSEE'22), 10-12 April 2022. Proceedings of the 7th World Congress on Civil, Structural, and Environmental Engineering (CSEE'22). ICSECT, 10.11159/icsect22.171

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Abstract

Self-compacting high-performance concrete (SCHPC) combines the properties and advantages of self-compacting concrete and high-performance concrete in both fresh and hardened state. For the SCHPC mix design, sand to aggregate ratio is a crucial parameter and plays an important role in governing the properties of SCHPC mix. This paper presents the results of an experimental investigation on the flowability, passing ability and mechanical properties of SCHPC mixes for various sand to total aggregate (S/A) ratio and water to cementitious material (w/cm) ratio. Tests were conducted on specimens using four (w/cm) ratios: 0.26, 0.30, 0.35 and 0.40 and two(S/A) ratios: 48% and 53%. All the mixtures were tested using slump flow test, J-Ring test, and L-box test in the fresh state as well as compressive strength, splitting tensile strength, and unit weight in the hardened state. The test results revealed that a lower S/A ratio (0.48) enhanced the flowability where as the higher S/A ratio (0.53) enhanced the passing ability. The lower S/A ratio ( 0.48), containing greater proportion of coarse aggregate, generally improved the mechanical properties of SCHPC compared to the mixes with the higher S/A ratio (0.53).

Item Type:	Conference or Workshop Item (Paper)
Date Type:	Publication
Status:	Published
Schools:	Engineering
Additional Information:	The proceedings and related papers are all based on the open-access model, which means interested individuals and institutions can access the material for free. Users are allowed to read, download, copy, distribute, print, search, or link to the full texts of the articles in this proceedings without asking prior permission from the publisher or the author. This is in accordance with the BOAI definition of open access.
Publisher:	ICSECT
ISBN:	978-1-927877-99-9
Related URLs:	Publisher
Date of First Compliant Deposit:	23 April 2022
Date of Acceptance:	1 February 2022
Last Modified:	21 Jun 2023 09:55
URI:	https://orca.cardiff.ac.uk/id/eprint/149249

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