Analisis Pengaruh Temperatur Terhadap Kuat Tekan Beton

. Heating that occurs to concrete due to fire, changes the characteristic of concrete. Thus, this research is done to know the compressive strength of burnt concrete and relation between temperature and compression strength. The specimens shape was cubic, counted 100, of 15 x 15 x 15 cm3. Heating is made in oven at temperature of 200oC - 600oC with 50oC increased interval. Analysis of data was made by descriptive analysis and regression analysis. The result showed that the average of compressive strength decreased while the temperature increased. The residual of compressive strength at temperature of 200oC, 400oC and 600oC were consecutively 85,83%, 58,40% and 35,08% compared to normal concrete. The regression model is y = -0.2802 x + 248.79 and R2= 0.8539 of linear regression. Meanwhile, polynomial regression is y = 10-4 x2 – 0.3402 x + 255.65 with R2= 0.8576