@thesis{thesis, author={Falah Fajrul}, title ={PENGARUH PENAMBAHAN SERAT TALI POLYPROPYLENE TERHADAP KUAT TEKAN, KUAT TARIK BELAH, KUAT LENTUR PADA BETON}, year={2020}, url={http://eprints.umm.ac.id/58473/}, abstract={Taking from its strengths, concrete also has weaknesses, that is, it has brittle properties so that it cannot withstand tensile stress. In this study, we tried to apply the concept of using fibers in a concrete mixture with a length of 5 cm decomposed fibers which were mixed randomly, while the fiber used was a multifilament type of polyoprylene rope fiber. in the compressive strength test, split tensile strength, and flexural strength using 1 point loading .The percentage of polypropylene fiber as a fine aggregate added material is 0%, 0.75%, 1.5, 2.25%, 3%. Compressive strength is produced by varying the percentage of polyoprylene rope fiber 0%, 0.75%, 1.5, 2.25%, 3%. are 25.15 MPa, 26.48 MPa, 26.59 MPa, 22.1 MPa and 16.40 MPa. Results The tensile strength of 0%, 0.75%, 1.5, 2.25%, 3%. are 2.36 MPa, 2.59 MPa, 2.26 MPa, 1.98 MPa, 1.76 MPa. Results Flexural strength with variations in fiber percentage between 0%, 0.75%, 1.5, 2.25%, 3% is 38.21 kg / cm2, 46.31 kg / cm2, 35.65 kg / cm2, 24.91 kg / cm2, 25.48 kg / cm2.} }