Pengaruh Suhu dan Waktu Pembakaran Pada Struktur Beton terhadap Kuat Tekan Beton

Abstract

Concrete that has been printed after the age of 28 days of drying the treated fuel at temperatures 100oC, 200oC, 300oC, 400oC, 500oC, 600oC, 700oC and 800oC with holding time (holding time) 20 minutes, 40 minutes and 60 minutes for each temperature. After the burning, concrete cooled for 24 hours and performed the test characteristics of the mechanical properties (compressive strength) and physical properties (porosity and density) in the concrete specimens. The specimens made with concrete composition 1 cement : 2 sand : 3 pebbles. Results showed that compressive strength at temperature 500oC for 20 minutes holding time is 20,637 MPa and holding time of 40 minutes is 18,509 MPa, porosity data for 20-minute detention time is 8.6% and for 40 minutes holding time is 10.7% , the data density for 20 minute detention time is 2.870 kg/m3 and for the holding time of 40 minutes is 2.850 kg/m3 approaching the typical compressive strength of normal concrete with the use of concrete for residential purposes. While for the 60-minute detention time yielded compressive strength is 15,541 MPa, the porosity of 13.2%, and density of 2.770 kg/m3 which do not meet the typical compressive strength of normal concrete