The concept of using fibers in concrete to improve resistance to cracking and fragmentation is old and intuitive. During the last 30 years different types of fibers and fiber materials were introduced and are being continuously introduced in the market as new applications. In this thesis, commercially available synthetic fibers namely, polypropylene, is used to study the effects of polypropylene fiber used for reinforcing concrete mixes and to obtain basic strength. The compressive, splitting

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... nsile strength tests were performed by changing fiber weight content from 0% to 1% of the cement weight content. As a result, it was found that the use of polypropylene fiber considerably increases the tensile strength as the fiber content is increased. The compressive strength has increasing by 10% with (0.25%) of fiber than start decrease with increase the fiber quantities. Compared to corresponding plain concrete, there was a favorable decrease in drying shrinkage and creep of specimens containing various fiber contents.