SIMULASI PERUBAHAN KUAT TEKAN BETON PADA KONDISI EKSTRIM PASCA PEMBAKARAN

Abstract The change of strong of concrete pressure after burning and cooling down by watering can used to make approximately the level of building brokeness that burned and calmed by using water.  The method that used in this research was experiment method required K300 concrete, it formed with size 15 cm x 15 cm x 15 cm totally 21 concrete with variation, i.e. 3 normal concretes, burning concrete at 1 hour, 2 hours and 3 hours with common cooling down in every 3 concrete.  In eddition, burning concretes at 1 hour, 2 hours and 3 hours with cooling down by using watering in every 3 concretes.  The data collected by using testing technique to experiment objects and compiler materials of experiment objects with rules that used in laboratory that refer to SNI.  The result of experiment objects indicated that concretes were burned trough normal cooling down become discharge of strong of concretes pressure amount 8% at 1 hour of burning, 13% at 2 hours of burning and 32% at 3 hours of burning than normal concrete.  Afterwards at burning and cooling by using watering , the discharge of strong of concrete pressure amount 20% at 1 hour of burning, 32% at 2 hours of burning and 40% at 3 hours of burning.  From the result of testing can be make conclution that the process of cooling down by using watering in burning makes increasing to discharge of strong of pressure concrete itself. Key Words: concrete, burning, cooling down,  pressure Strength