Study on impact of fiber hybridization in material properties of engineered cementitious composites

Abstract

Engineered Cementitious Composite (ECC) is a type of improved high-performance fiber reinforced cementitious composites with good tensile, compression and flexural behavior. ECC is known for their strain-hardening behavior under tension and has been increasingly applied in engineering practice. The process of adding two or more fibers in a mix is known as hybridization. The hybrid composite drives benefits from each of the individual fibers added and exhibits improved ultimate strength and strain capacity compared to the mono-fiber composites. The major applications of ECC are structural reinforcement in the construction and also organic fiber hybridization is valid only for underwater conditions and they will provide additional tests concerning burnability or flammability. This work presents the results obtained from three ECC mixes (PVA, PP, STEEL) and four Hybrid Engineered Cementitious Composites (HECC) with different combinations of volume fraction with PVA, PP, STEEL. The experimental studies have been carried out to investigate the mechanical behaviors of ECC and HECC. The results indicate that this hybridation process has a notable achievement in compressive strength, direct tensile strength and flexural strength.