Reza Keihani and Ali Bahadori-Jahromi and Timothy James Clacy, Sustainable Development of Medium Strength Concrete Using Polypropylene as Aggregate Replacement. journal = {International Journal of Civil and Environmental Engineering}, [online]. World Academy of Science, Engineering and Technology. August 2019, vol. 153(9). 588 - 599 [viewed 20 April 2024]. Available from: https://publications.waset.org/pdf/10010763.