Analysis of 25 MPa quality concrete compressive strength with variations in sand zones
Department of Civil Engineering, Manado State Polytechnic, Manado, 95252, Indonesia.
Research Article
World Journal of Advanced Engineering Technology and Sciences, 2023, 10(02), 082–087.
Article DOI: 10.30574/wjaets.2023.10.2.0286
Publication history:
Received on 29 September 2023; revised on 19 November 2023; accepted on 21 November 2023
Abstract:
The need for aggregate in a concrete mixture is around 60-70% of the total weight of concrete, so the choice of aggregate can affect the quality of the concrete. Generally, when making concrete, coarse-graded sand is preferred over fine-graded sand because fine-graded sand has less strong adhesion between the grains. This condition could potentially lead to environmental degradation due to excessive excavation of coarse-graded sand. This research aims to analyze concrete mixtures in various sand zones to achieve a compressive strength of quality concrete of 25 MPa. The method used is laboratory experimental. The research results show that to achieve a concrete quality of 25 MPa, Water-Cement Ratio (WCR) values of 0.54, 0.53, 0.52, 0.50 are required; the amount of cement was 379.63 kg, 386.79 kg, 394.23 kg, 410 kg; and the percentage of sand to total aggregate is 39%, 39%, 38%, 37% for concrete mixtures using sand zones 1, 2, 3 and 4, respectively. The finer the sand gradation, the greater the amount of cement required, while the WCR value and percentage of sand to total aggregate are lower to achieve a concrete quality of 25 MPa.
Keywords:
Concrete; Compressive Strength; Sand Gradation; Water-Cement Ratio
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Copyright © 2023 Author(s) retain the copyright of this article. This article is published under the terms of the Creative Commons Attribution Liscense 4.0