Laboratory investigation for the effects of using fiber reinforcement in rigid pavements on compressive and flexural properties

Abstract EN

Rigid pavements provide durable service life and have remarkable application under heavy traffic loading.

But, though the rigid pavements have several advantages, it suffers from some disadvantages that are relating with concrete is brittle material.

One solution have been carried out in order to overcome this problem is using fibers reinforced to improve tensile strength and provides ductility.

The main objective of this study is to investigating the effects of using fiber reinforced concrete (Polyvinyl alcohol and steel fiber) in Rigid Pavements on Compressive and Flexural Properties.

The study results shown the compressive strength has been increased by (20%) when adding (0.5%) of Polyvinyl alcohol concrete mixture.

While modulus of elasticity has been decreasing by (23 %) when adding the same content of Polyvinyl alcohol.

On the other hand, the study results show that using steel fiber (1.5 %) in concrete mixtures increase compressive strength by more than 145 %.However modulus of elasticity slightly decrease.

Also the addition of PVA fiber by 0.5 % increase of about (51 %) in the Modulus of Rupture, while using steel fiber (1.5 %) increase Modulus of Rupture by more than (24 %).