Pengaruh Penggunaan Serat Polypropylene sebagai Bahan Tambah dan Limbah Kaca sebagai Substil'usi Agregat Halus terhadap Kuat Tekan Beton

Abstract

Fiber concrete is an iMovntion from. normal concrete to special concrete, with t'he constituent elements of cement, water, fine aggregate, coarse aggregate and fiber. One of the types of fiber above is polypropylene fiber����� Based on the literature, it is known that polypropylene fibers can improve concrete performance. The use of recycled glass helps in saving energy and improving the environment. Increasing awareness of glass recycling is accelerating changes in the use of glass waste in different fonns in various fields. One of its significant contributions is in the construction sector where glass waste is reused for concrete production. In this research, a comparison was made of the use of polypropylene fiber as an additive and the use of glass waste as a substitute for fine aggregate. The variation of polypropylene fiber used is 1.5%; 2% and 2.5% of cement weight. The variations used for using glass waste as a substitute for fine aggrega·te are 3%, 6% and 90/o. The test carried out in this research was testing the compressive strength of concrete with cylindrical specimens with a diameter of 15 cm and a height of 30 cm with a curing period -of 28 days. From the table above, it can be seen that the average compressive strength of concrete with polypropylene fiber variations of 1.5%, 2% and 2.5% respectively is 19.83 MPa, 20.75 MPa and 12.99 MPa. Based on the graph of concrete compressive strength test results above, it can be seen that in this study the highest concrete compressive strength value was obtained, namely 22.39 MPa for variations of 2.0% PPF concrete and 3% glass, and the lowest concrete compressive strength value was I 0. 56 MPa in variations of 2.5% PPF concrete and 9% glass. The percentage reduction in the average compressive strength of concrete with polypropylene fiber variations of 1.5%, 2.0% and 2.5% compared to the nonnal PPF Oo/o concrete variation is 6.38%. 2.01 % and 38.66%.