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

Résumé

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 strainhardening
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.
Keywords: Engineered Cementitious Composite, Compressive Strength, Flexural Strength, Direct Tensile
Strength, Composites with Organic Burnable Materials