Study of the Compressive Strength of Concrete with Polypropylene Microfiber

Abstract

In this article, the authors conducted experiments to compare the strength of concrete without additives, at which explosive fracture is possible, with concrete containing polypropylene microfiber. The composition of the concrete mixture with polypropylene microfiber and compensating additives can correspond to the same design class for compressive strength as a regular concrete (at least 30 MPa). Analysis and comparison of the studied samples showed that coefficients of working in high temperature conditions of concretes with polypropylene microfiber and compensating additives exceeded the coefficients recommended by requirements for regular concrete. These tests prove that polypropylene microfiber can be used to prevent brittle failure without reducing the strength of the product.