Abstract: This study aimed to examine the effect of waste marine sea shell product in the compressive strength of concrete when used as substitute to fine aggregate.Specifically, this study aimed to determine the compressive strength of concrete when 5%, 10% and 15% of the volume of fine aggregate was substituted with three selected shells namely Capiz Shell, Scallop Shell and Green Shell. The study covered the determination of the physical properties of cement, coarse and fine aggregates that were used in determining the appropriate design of concrete mixture. Shell samples were taken from Estancia, Concepcion and Oton, Iloilo, while aggregates were taken from Jalaur River, Cabatuan, Iloilo. Laboratory tests were conducted at Western Institute of Technology CE Laboratory. A total of fifty-four (54) concrete cylinder samples were prepared and tested using the Universal Testing Machine. The average compressive strength of three concrete samples obtained during the tests was used in the analysis of comparing the compressive strength of concrete. The result showed that the three shells used as substitute to fine aggregates had met the minimum compressive strength requirement for 28 days when 5% of the volume of the fine aggregate was substituted with the three selected shells, but when 10% and 15% of the volume of fine aggregate were substituted with the three selected shells, only Capiz Shell and Green Shell met the required compressive strength of 3,000 psi required at 28 days.
Keywords: concrete, aggregate, compressive strength, shells, Capiz Shell, Scallop Shell, Green Shell.
Title: STUDY OF THE COMPRESSIVE STRENGTH OF CONCRETE WITH SELECTED SHELLS AS SUBSTITUTE TO FINE AGGREGATES
Author: Dr. Corazon C. Corbal
International Journal of Civil and Structural Engineering Research
ISSN 2348-7607 (Online)
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