Akinyele, J.O., Salim, R.W. and Oyeti, G. 2015. Use of Recycled Polypropylene Grains as Partial Replacement of Fine Aggregate in Reinforced Concrete Beams. Engineering Structures and Technologies. 6, 4 (Oct. 2015), 184-190. DOI:https://doi.org/10.3846/2029882X.2015.1070697.