Uji Eksperimental Kuat Tekan Mortar Paving Block dengan Bahan Limbah Substitusi Agregat Halus dan Semen

Abstract

Offsetting the high availability of by-products from the coal burning industry as a PLTU power plant in the form of waste, various efforts have been made by researchers and the government to manage environmentally sound waste management businesses. One of the efforts made by researchers is to improve the category of B3 waste (dangerous, toxic) into environmentally friendly waste, namely by the method of waste treatment. The research will be carried out at the Soil and Water Engineering Laboratory and the Agricultural Mechanization Laboratory of Lampung State Polytechnic for 6 months. The treatment that will be applied in this study is use. bottom ash or bottom ash which is used as a fine aggregate substitute for 100% mixture of paving block making for sand volume. Variation in the use of fly ash or fly ash as part of cement replacement material in a mixture of 30%, 40% and 50%, 100% of the volume of cement. The testing period is 7, 14 days. Then a press test is performed using a CTM (compresion testing machine) tool. The test results compared with the standard physical properties according to SNI 03-0691-1996 were obtained from the average sample Bottom Ash 30% compressive strength at 7 days: 7.2 Mpa, 14 days: 10.3 Mpa, Sample B at 7 days of age: 6 , 8 Mpa, 14 days: 9.5 Mpa. Sample C at 7 days: 5.8 MPa, 14 days: 8.4 MPa. Sample D at the age of 7 days: 1 Mpa, 14 days: 1.4 Mpa, with recommendations for samples of mixtures Bottom 30%, 20% and 10% including the category III SNI 03-0691-1996 and can be used as material for paving block construction while sample bottom Ash 0% does not enter katogari SNI 03-0691-1996. Keywords: Paving block, fly ash, bottom ash, Compressive Strength