Effect of Fibrous Concrete Layers on Behavior of Self-Compacting Concrete Slabs under Uniform Load.

This research study the effect of using fibrous concrete layers on behavior of two way Self-Compacting Concrete slabs with ratio (length/width) ?1.618 [golden ratio] using steel fiber. The experimental work can be divided in two groups, each group having steel fiber?volume fractions of 0.4% and 0.8%, moreover both groups having two concrete slabs one with two fibrous layers (bottom + top) and the other with one fibrous layer (bottom), in additional to concrete slab without steel fiber( reference slab). All the testing was done under uniform load. The experimental work result found, that when using fibrous one layer (bottom) or fibrous two layers (bottom + top) with having steel fiber ?volume fraction of 0.4%, 0.8%, the ultimate strength is significantly increased and the mode of failure changed from bending to shear. Also for the same amount of steel fiber, the effect of distribute in one layer (bottom) was higher than the distribute in two layers (bottom + top)