INFLUENCE OF GRANITE-GRAVEL COMBINATION ON THE STRENGTH OF SELF-COMPACTING CONCRETE: TOWARDS A SUSTAINABLE CONSTRUCTION MATERIAL

Bamigboye, Gideon and Adedeji, Adeola A. and Olukanni, D. O. and Omoleye, James and Jolayemi, Kayode J. (2019) INFLUENCE OF GRANITE-GRAVEL COMBINATION ON THE STRENGTH OF SELF-COMPACTING CONCRETE: TOWARDS A SUSTAINABLE CONSTRUCTION MATERIAL. Journal of Engineering Science and Technology, 14 (5). pp. 2746-2760. ISSN 1823-4690

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Abstract

This study focusses on the influence of granite-gravel (washed and unwashed) combination as coarse aggregate on hardened properties of Self-Compacting Concrete (SCC). Granite-gravel combination in varying percentages was used as coarse aggregates to produce SCC while other concrete constituents were kept constant. The experiments executed on hardened SCC were compressive and split tensile strength. Concrete were made using 150 mm cubes and 100 mm × 200 mm cylinders. Data obtained were analysed using graphical illustrations while Minitab was used to model values for the mix proportions. The compressive strength of SCC produced reliable results with a minimum strength of 30.96 N/mm² for 50% washed gravel at 28 days of which, the strength also increases as curing age increased. The split tensile strength of SCC increases as the curing day increased but decreased as gravel content increased with 50/50 threshold limit. The Surface plots analysis shows that the percentage increase of granite-washed gravel combination as coarse aggregate and curing ages in SCC has significant impact on compressive strength. It can be concluded that granite/gravel combination as coarse aggregates in SCC production is feasible and reliable provided the threshold limits of 50% washed gravel and 30% unwashed gravel are not exceeded.

Item Type:	Article
Uncontrolled Keywords:	Aggregates, Cement, Compressive strength, Concrete, Granite and gravel, Self-compacting concrete
Subjects:	T Technology > TA Engineering (General). Civil engineering (General)
Divisions:	Faculty of Engineering, Science and Mathematics > School of Civil Engineering and the Environment
Depositing User:	Mrs Patricia Nwokealisi
Date Deposited:	01 Jul 2020 16:26
Last Modified:	01 Jul 2020 16:26
URI:	http://eprints.covenantuniversity.edu.ng/id/eprint/13447

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