Experimental Study on Behaviour of Fiber Reinforced Concrete for Rigid Pavements

This project work involves in an experimental investigation on the influence of polyester and glass fibers on the mechanical properties of the concrete used in the rigid pavement. In this experimental study two types of concrete mixes were prepared individually. Polyester fibers of 0.1% to 0.4% and glass fibers of 0.1% to 0.3% by weight of cement were added to the mixes. After that a comparative analysis has been carried out for conventional concrete to that of the fiber reinforced in relation to their compressive, split tensile, flexural strength properties. As the fiber content increases compressive, split tensile and flexural strengths are proportionally increasing. . In this study the observation shows that, the percentile of fiber content increases from 0%, 0.1%, 0.2%, 0.3%, 0.4% for polyester fiber and 0%, 0.1%, 0.2%, 0.3% for glass fiber in concrete mixes. By the experimental work the compressive, split tensile and flexural strengths are proportionally increased both polyester and glass fiber usage. It is observed that the optimum dosages of polyester fiber are 0.3% and glass fiber is 0.2% by weight of cement. It is found that with 0.3% polyester fiber and 0.2% glass fiber content results in 20% and 26% reduction of pavement thickness. Economic analysis is indicating that with the addition of polyester and glass fibers there is a saving in economy by 11.63% and 20.24% respectively compared to that of conventional concrete.