Strength prediction of modified self-compacting concrete using response surface method

Udayasree, Bakigari and Reddy, Avuthu Narender and Suvidha, Yadav and Kulkarni, Prathik and Kumar, Cholkar Arvind and Kavyatheja, Bodevenkata (2024) Strength prediction of modified self-compacting concrete using response surface method. POLLACK PERIODICA : AN INTERNATIONAL JOURNAL FOR ENGINEERING AND INFORMATION SCIENCES, 19 (1). pp. 27-32. ISSN 1788-1994 (print); 1788-3911 (online)

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Abstract

This study highlights the effectiveness of the response surface method in predicting the properties of hardened concrete containing spent foundry sand and manufactured-sand. In current research, different mix proportions are prepared with spent foundry sand and manufactured-sand as partial replacements for fine aggregate. The workability, strength, and durability studies are conducted on all concrete mixes. The test results confirm that the inclusion of 20% of spent foundry sand is optimum for enhancing the strength and durability. Also, the inclusion of 20% of spent foundry sand in manufactured-sand concrete also possesses optimum results in strength and durability. Further, the response surface method has been employed to develop a model for compressive strength prediction. The R-squared and residual sum of squares of error for the compressive strength model were 0.9863 and 2.345, which confirms the goodness of the fit.

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