Study of Nanotechnology in Concrete Compounds and Properties when Adding Polypropylene Fibers to Design a Concrete Mix

Abstract

The urgent need to develop concrete and understand its behavior began as a result of the need for it to confront either natural factors such as earthquakes or floods or factors caused by man himself. Therefore, the idea of ​​strengthening concrete came almost since the end of the seventies of the last century, especially in Asian countries, where it began to use fibers to increase strength and facility by moving and positioning them. In this study, we referred to the design of a concrete mix reinforced with polypropylene fibers in addition to the use of plasticizers according to the Iraqi Standard (ISS 1431/1989) with polypropylene fibers with a length of 15 mm. Several mixtures were used to obtain an ideal mixture and the use of concrete samples cubes and cylinders in addition to the prism for the purpose of showing the compressive and tensile strength . Where the study showed an increase in the strength of the resistance when adding propylene fibers, but with a slight decrease in the properties of other operational concrete, but within the permissible limits.