I. INTRODUCTION
CONCRETE is an artificial material in which the aggregates
both fine and coarse are bonded together by the cement when
mixed water. The concrete has become so popular and
indispensable because of its inherent in concrete brought a
revolution in applications of concrete. Concrete has unlimited
opportunities for innovative applications, design and
construction techniques. Its great versatility and relative
economy in filling wide range of needs has made it a very
competitive building material.