The Effect of Roving Fibers Addition on the Compressive and Tensile Strength of No-Fines Concrete

Abstract

The addition of fiber in the concrete mixture has proven to increase the tensile strength of concrete for non-structural purposes. Natural materials and easily obtainable can be generally used for non – structural purposes. This study was aimed to investigate the effect of roving fiber addition on the compressive and tensile strength of the no-fines concrete. The results of this study were expected to be an input for the society, especially for the construction materials industry, and can be useful for further research. The test specimens used in this study, for each type of variable, were 3 cylinders for compressive strength test and 3 cylinders for tensile strength test. The volume ratio between the cement and gravel on the mixture was as follows: 1: 5, 1: 6, 1: 7, 1:8, 1: 9. In addition, the length of the roving fibers used in this study was 3 cm. The addition of roving fibers of each mixture was 0%, 2.5%, 5%, 7.5%, 10% of the weight of the cement. The results showed that the addition of roving fiber increased the compressive strength and tensile strength of no-fines concrete. The optimal compressive strength was achieved at the 5% addition of fiber roving. Furthermore, the optimal splitting tensile strength of concrete was achieved on the 5% addition of fiber roving.