Tambichik, M. A., Abdul Samad, A. A., Mohamad, N., Mohd Ali, A. Z., Othuman Mydin, M. A., Mohd Bosro, M. Z., & Iman, M. A. (2018). Effect of combining Palm Oil Fuel Ash (POFA) and Rice Husk Ash (RHA) as pozzolan to the compressive strength of concrete. International Journal of Integrated Engineering, 10(8). Retrieved from https://publisher.uthm.edu.my/ojs/index.php/ijie/article/view/3077