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Alphario Raymond
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Earth & Planetary Sciences Energy Engineering Environmental Science Industrial & Manufacturing Engineering

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Uji Kuat Tekan Beton dengan Campuran Air Asam dari Daerah Gambut Alphario Raymond
Jurnal Serambi Engineering Vol. 10 No. 3 (2025): Juli 2025
Publisher : Faculty of Engineering, Universitas Serambi Mekkah

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Abstract

The assessment of concrete's compressive strength is of paramount importance in determining the quality of the concrete mixture and its subsequent curing process. The utilisation of water with an optimal pH level during the mixing process has been demonstrated to yield concrete of a superior quality. Despite the abundant water present in peat areas, the pH of this water is typically below ±7. Consequently, further research is necessary to ascertain the suitability of this water for use in concrete mixing. The methodology employed in this study is a quantitative descriptive study that aims to determine the impact of water with a low pH from peat areas on the concrete mixture on the resulting compressive strength. The study commenced with a review of the extant literature, followed by the testing of the concrete quality plan of 23 Mpa using water with a pH of 5.51. The curing process was conducted on days 7, 14, 28, and 90. The findings of the compressive strength examination demonstrated values of 13.1 MPa at the age of seven days, 15.3 MPa at the age of 14 days, and 15.2 MPa at the age of 28 days. Thereafter, a decline was observed at the age of 90 days, resulting in an average compressive strength of 11 MPa. The findings of this study suggest that water with a pH below 7 has a detrimental effect on the quality of concrete.
Analisis Uji Kuat Tekan Beton Dengan Perendaman Air dari Daerah Gambut Apria Brita Pandohop Gawei; Okta Meilawaty; Stephanus Alexsander; Alphario Raymond
Jurnal Serambi Engineering Vol. 11 No. 1 (2026): Januari 2026
Publisher : Faculty of Engineering, Universitas Serambi Mekkah

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Abstract

The quality of concrete is greatly influenced by the compressive strength obtained after mixing and curing the test specimens. One important factor in making concrete is the quality of the water used, including its acidity level (pH). Water from peat areas, although abundant, generally has a pH below 7, thus affecting the quality of concrete. This study uses a quantitative descriptive approach to determine the effect of low pH water (5.51) as curing water on the compressive strength of concrete with a planned quality of 23 Mpa. Concrete curing was carried out and tested at the ages of 7, 28, and 90 days. The results show that the average compressive strength of concrete at the age of 7 days obtained a compressive strength of 11.0 Mpa, at the age of 28 days the average increased significantly to 18.4 Mpa, but decreased at the age of 90 days with an average compressive strength of 14.1 Mpa. These findings confirm that the use of water with a low pH as a curing water can also significantly reduce the quality of concrete, so special attention is needed in the selection of water used.
Co-Authors Apria Brita Pandohop Gawei Okta Meilawaty Stephanus Alexsander