et. al. BYR. Study on Mechanical Properties of Concrete by Fractional Replacement of Cement with Metakaolin and Sand with M-Sand by Using M30 Grade. TURCOMAT [Internet]. 2021Apr.11 [cited 2025Jun.10];12(2):1835-40. Available from: https://www.turcomat.org/index.php/turkbilmat/article/view/1521