Mohd Nizam, Muhammad Akmal Hakim, and Shahiron Shahidan. “Micro Steel Fiber Concrete Using Ultrasonic Pulse Velocity Method”. Recent Trends in Civil Engineering and Built Environment 4, no. 2 (July 11, 2023): 101–108. Accessed February 22, 2024. https://publisher.uthm.edu.my/periodicals/index.php/rtcebe/article/view/5681.