Experimental Study of Polypropylene Fibre Concrete with Admixture

This paper describes a study of behavior of polypropylene fibre reinforced concrete in the modern construction industry. The study of the influence of addition of polypropylene fibres at increasing dosage from 0.5% to 2.5% of total weight of cement was carried out. Its use in concrete makes effective utilization of tensile and flexural strength of the material along with reduction of plastic shrinkage cracking and thermal cracking. Experiment was done using M-30 mix and Compression test; Split Tensile test and Flexural Strength test were carried out at 7 and 28 days as per standard procedures by relevant codes. The result was compared with conventional concrete and it was observed that concrete with 1.5% by weight of polypropylene fibre as additive, showed highest strength of concrete with decreased self weight. The strength decreased gradually with further increase in percentage of polypropylene fibre.