et. al., B. Y. R. . (2021). Study on Mechanical Properties of Concrete by Fractional Replacement of Cement with Metakaolin and Sand with M-Sand by Using M30 Grade. Turkish Journal of Computer and Mathematics Education (TURCOMAT), 12(2), 1835–1840. Retrieved from https://turcomat.org/index.php/turkbilmat/article/view/1521