BETON RINGAN MENGGUNAKAN STYROFOAM SEBAGAI BAHAN PENGGANTI AGREGAT KASAR

Abstract

Construction of construction in Civil Engineering nowadays is special in the field of transportation and water more andmore use of concrete. In the field of concrete construction on road and drainage works, one of the expected concrete isthe lightweight concrete but the expected compressive strength as required. This study aims to determine the propertiesof Styrofoam as a substitute for rough aggregates and to determine the weight of the resulting volume and compressivestrength of concrete to obtain the composition of the material in the ratio of volume 1 Pc: 2 Sand: 3 Styrofoam and 1 Pc:1.5 Sand: 2, 5 Styrofoam by making Ø15-30 cm cylindrical test specimen for volume weight and compressive strengthof characteristic.The result of the research will show the characteristic characteristic of Styrofoam as substitute of roughaggregate not qualified because the weight of Styrofoam volume is 0,01 kg / ltr, density 1,24, absorption 0,13% exceptmodulus of fineness fulfill requirement that is 7,21. Volume weight obtained for composition 1 Pc: 2 Sand: 3 Styrofoamis 1324,91 kg / m3 and composition 1 Pc: 1,5 Sand: 2.5 Styrofoam is 1330,94 kg / m3, while compressive strength ofcharacteristic for composition 1 Pc: 2 Sand: 3 Styrofoam 33.02 kg / cm2 and composition 1 Pc: 1,5 Sand: 2.5 Styrofoamis 39.04 kg / cm2 included in the classification of quality concrete B0 (<100 kg / cm2). Keywords Styrofoam, coarseaggregate, lightweight concrete and compressive strength.