Journals Information
Civil Engineering and Architecture Vol. 11(4), pp. 1668 - 1678
DOI: 10.13189/cea.2023.110403
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Scrutinizing the Effect of Water Temperature on the Compressive Strength of Recycled Concrete
Dadang Iskandar 1,*, Ida Hadijah 1, Sigit P. Hadiwardoyo 2, Novia Lumintu Wati 1, Septyanto Kurniawan 1
1 Department of Civil Engineering, Faculty of Engineering, Universitas Muhammadiyah Metro, Metro-Lampung, 34112, Indonesia
2 Department of Civil Engineering, Faculty of Engineering, Universitas Indonesia, Depok, 16424, Indonesia
ABSTRACT
After demolishing rigid roads and old buildings, concrete is often rendered worthless and thrashed as waste. Currently, sustainable concrete construction is very popular, and the goal of the industry is to protect the population's well-being by reducing CO2 emissions and encouraging the effective use of natural resources. One of the causes of decreased quality of recycled products is the adherence of cement paste to concrete demolition. Therefore, this study aims to examine the effect of water temperature on the compressive strength of recycled concrete. This is carried out with the hope that water temperature can impact the disintegration of the cement paste in the demolition concrete, thereby strengthening the bond between aggregates. The water temperature applied in this study was 25℃, 60℃, and 100℃, while the levels of recycled concrete aggregate (RCA) used were 25%, 50%, and 80%. The results showed that the highest compressive strength was obtained with an average of 26.23 MPa at a water temperature of 25℃ and 25% RCA. However, this value is still below the composition of the natural aggregate, which is 28.6 MPa. Due to the rapid hydration caused by the high-water temperature, the process of forming concrete on the surface is accelerated while the interior remains weak. This situation affects the weakening of the compressive strength of concrete. Furthermore, this study shows that high water temperatures are beneficial for the cement paste decay process in recycled aggregates, but it is best to use a normal temperature of 25℃ when mixing the water.
KEYWORDS
Water Temperature, Recycled Concrete, Sustainability, Compressive Strength
Cite This Paper in IEEE or APA Citation Styles
(a). IEEE Format:
[1] Dadang Iskandar , Ida Hadijah , Sigit P. Hadiwardoyo , Novia Lumintu Wati , Septyanto Kurniawan , "Scrutinizing the Effect of Water Temperature on the Compressive Strength of Recycled Concrete," Civil Engineering and Architecture, Vol. 11, No. 4, pp. 1668 - 1678, 2023. DOI: 10.13189/cea.2023.110403.
(b). APA Format:
Dadang Iskandar , Ida Hadijah , Sigit P. Hadiwardoyo , Novia Lumintu Wati , Septyanto Kurniawan (2023). Scrutinizing the Effect of Water Temperature on the Compressive Strength of Recycled Concrete. Civil Engineering and Architecture, 11(4), 1668 - 1678. DOI: 10.13189/cea.2023.110403.