Study of Self Compacting Concrete performance with addition of nylon fiber

Abstract

Self Compacting Concrete (SCC) is a plastic concrete that is easy to flow because of its own weight, fulfils all the desired concrete molds, and has the properties to compose itself. Very suitable applied to conventional concrete construction work that has a large specific gravity and compaction or vibration of concrete is needed. The purpose of compaction itself is to minimize the air trapped in fresh concrete, hence the concrete becomes homogeneous and voids do not occur. To increase the flexural strength of concrete, the addition of nylon fibers can be a solution. Nylon fiber is a material with polymer fibers that have fiber, film and plastic properties. The objective of this study is to evaluate the compressive strength and modulus of elasticity, tensile strength and flexural strength of concrete with the addition of nylon fiber. The percentage of nylon fiber addition of 0.5% and 1% of the weight of cement with a diameter of 0.35 mm and 0.65 mm and a length of 15 mm and 20 mm. With the addition of 1% nylon fiber, compressive strength increases 126% in variation of 0.65 mm diameter and L = 15 mm, tensile strength increases 56.27% in variations diameter of 0.65 mm and a fiber length of 20 mm and flexural strength increases 5.390% in variations a diameter 0.65 mm in the length of 20 mm. The diameter, length and volume of the addition of nylon fibers affect the concrete mechanical behavior. It is proven that the greater the diameter of the nylon and the percentage of the addition of nylon can increase the strength of concrete.