The Study of Mean Time Drying Shrinkage Behavior of Steel Fiber Reinforced Concrete Pavements

Paper by ILASSANI MOHAMMAD from ISCR 8th 1998 Lisbon Portugal

Concrete structures shrink when they are subjected to a drying environment. If this shrinkage is restrained, then tensile stress develop and concrete may crack. This shrinkage is a major concern for concrete structures especially for wall, slab and pavements. One of the methods to reduce the adverse effects of shrinkage cracking is to reinforce concrete with short, randomly distributed fiber. The efficiencies of different steel fibers to arrest cracks with 0.25, 0.5, 0.75 and 1 percent by volume of concrete were examined. In this research ring type and slab specimens were used for restrained shrinkage cracking test. Results from this investigation showed that, steel fiber locally available not only control the width, length and depth of cracks, also would significantly improve the concrete properties such as tensile, flexural, shear and compression strength of concrete.

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