Strengthening of structural elements using poly vinyl alcohol and glass fiber composites

摘要

Engineered Cementitious Concrete (ECC), widely known to be Bendable Concrete. The advantage of ECC is that it can be molded easily in the required form and it is utterly reinforced with short random fibers, both polymer, and non-polymer fibers. It is known for its good compressive, tensile and flexural behavior. To overcome the absence of strain hardening property in conventional concrete, ECC was instituted. In the sulfate chloride environment, the ECC material remains durable when compared to normal concrete. As per referred works of literature the fibers usage should not exceed 2%. In this study, four mixes were made. There were two mixes with mono fibered reinforcement and two mixes with hybrid fibered reinforcement. Here the PVA and Glass fibers are hybridized to reach the mechanical performance of the ECC mixes. Superplasticizer used here in this study, improves the workability and minimize the shrinkage cracks. As far as mechanical performance is concerned, hybrid fiber reinforcement of PVA and glass is shown to be high in compression, mono fiber reinforcement with glass is shown to be high in both tensile and flexure.