Mohd Nizam, Muhammad Akmal Hakim, and Shahiron Shahidan. 2023. “Micro Steel Fiber Concrete Using Ultrasonic Pulse Velocity Method”. Recent Trends in Civil Engineering and Built Environment 4 (2): 101-8. https://penerbit.uthm.edu.my/periodicals/index.php/rtcebe/article/view/5681.