“Optimization of Flyash and Metakaolin Content in Mineral Based CFRP Retrofit for Improved Sustainability”, Int. j. eng. technol. innov., vol. 9, no. 3, pp. 171–181, May 2019, Accessed: Oct. 15, 2026. Available: https://ojs.imeti.org/index.php/IJETI/article/view/3573