Pengaruh Penambahan Limbah Plastik Hdpe (High Density Polyethylene) terhadap Kuat Tekan Beton

Abstract

Research has been carried out on the Effect of Adding HDPE (High Density Polyethylene) Plastic Waste on the Compressive Strength of Concrete by utilizing waste as raw material for artificial aggregates made from plastic. The aim of this research is to obtain the compressive strength of high quality concrete and to determine the slump and porosity values with the addition of HDPE plastic where this research was carried out using experimental methods. The composition of the added materials used in this research was a variation of 0%, 1%, 3%, 5% and 9% of coarse aggregate. The test object used is a cylindrical shape with a diameter of 15 cm and a height of 30 cm, SNI-03-7656-2012 planned concrete quality of 30 MPa which is tested at the age of 28 days with treatment carried out before testing. This research tested concrete with cylindrical specimens for compressive strength tests of 18 samples consisting of 6 variations and 3 samples for each variation. The research results showed that the average compressive strength of concrete with a 0% variation for a slump of 20.4 cm was 15, 237 MPa with a porosity of 14.649%, the average compressive strength of concrete with a variation of 1% for a slump of 19.3 cm was 10.947 MPa with a large porosity 16.787%, the average compressive strength of concrete with a variation of 3% for a slump of 16 cm is 11.91 MPa with a porosity of 18.166%, the average compressive strength of concrete with a variation of 5% for a slump of 15 cm is 13.285 with a porosity of 19.43%¸ The average compressive strength of concrete with a 7% variation for a slump of 8.8 cm is 10.043 MPa with a porosity of 21.376%, and the average compressive strength of concrete with a variation of 9% for a slump of 7.8 cm is 8.298 MPa with a porosity of 23.076. Based on these results it can be concluded that the compressive strength value of concrete can be influenced by variations in slump with the addition of the amount of water. Slump shows a decrease followed by compressive strength values showing a decrease and porosity values increasing.