Civil Engineering and Architecture Vol. 9(6), pp. 1900 - 1908
DOI: 10.13189/cea.2021.090621
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Effect of Water/Cement and Aggregate/Cement Ratios on Consistency and Compressive Strength of Concrete Using Volcanic Stone Waste as Aggregates

I Made Alit Karyawan Salain ^*
Department of Civil Engineering, Faculty of Engineering, Udayana University, Jimbaran 80361, Bali, Indonesia

ABSTRACT

This study investigates the effect of water cement (w/c) ratio and aggregate cement (a/c) ratio on consistency and compressive strength of concrete made by using volcanic stone waste aggregates. A total of 12 (twelve) concrete mixtures were made by varying w/c ratio and a/c ratio. Portland pozzolan cement was used as a hydraulic binder while volcanic stone wastes with a maximum diameter of 40 mm granules were used as fine aggregate and coarse aggregate. The consistency test, which is expressed in term of slump, was carried out for fresh concrete, while the compressive strength test, for each concrete mixture, was realized at the age of 28 days using 5 (five) cubical specimens measuring 150x150x150mm. The results of this study show that slump increases and compressive strength decreases with increasing w/c ratio for a constant a/c ratio. Slump decreases and compressive strength slightly increases with increasing a/c ratio for a constant w/c ratio. The decrease in slump and the increase in compressive strength with increasing a/c ratio for a constant w/c ratio is more clearly noted for a w/c ratio more than 0.5. Compressive strength decreases proportionally with increasing slump due to the increase in w/c ratio. This decrease tends to be sharper in mixture with lower a/c ratio.

KEYWORDS
Volcanic Stone Waste, Water Cement Ratio, Aggregate Cement Ratio, Consistency, Compressive Strength

Cite This Paper in IEEE or APA Citation Styles
(a). IEEE Format:
[1] I Made Alit Karyawan Salain , "Effect of Water/Cement and Aggregate/Cement Ratios on Consistency and Compressive Strength of Concrete Using Volcanic Stone Waste as Aggregates," Civil Engineering and Architecture, Vol. 9, No. 6, pp. 1900 - 1908, 2021. DOI: 10.13189/cea.2021.090621.

(b). APA Format:
I Made Alit Karyawan Salain (2021). Effect of Water/Cement and Aggregate/Cement Ratios on Consistency and Compressive Strength of Concrete Using Volcanic Stone Waste as Aggregates. Civil Engineering and Architecture, 9(6), 1900 - 1908. DOI: 10.13189/cea.2021.090621.