The effect of the polymer fibers and concrete strength on plastic shrinkage cracking in concrete slabs

When the concrete loses its moisture, shrinkage and volume reduction is happen and eventually cracks create and deformations in the concrete are increased. If the reinforcement concrete member be bounde, strain caused by condensation cause cracking member and increases the deformation member with time. This phenomenon is due to the rapid evaporation of water in the concrete, occurs because of the wind and temperature rise. One of the main reasons for the decrease in strength and durability of concrete are cracks. In this study evaluated the effect of fibers by different volumes on reduce cracking that created by, shrinkage plastic on concrete slabs. Plastic shrinkage experiments in a greenhouse by using mold that was designed for this purpose. The parameters in this study are, the percentage of fiber volume to volume of concrete and concrete strength. Finally, the effect of polymer fibers on plastic shrinkage cracking of concrete was investigated and discussed.