Analisis Pengaruh Temperatur terhadap Kuat Tekan Beton

Abstract

ratanya berturut-turut sebesar 85,83%, 58,40% dan 35,08% dari beton normal. Model regresi yang dihasilkan jika berbentuk regresi linier persamaannya adalah y =-0,2802x + 248,79 dengan nilai R 2 = 0,8539. Sedangkan model regresi berbentuk regresi polinomial derajat 2 persamaannya adalah y = 10-4 x 2-0,3402x + 255,65 dengan nilai R 2 = 0,8576. Kata-kata Kunci: Temperatur, kuat tekan, beton. Abstract 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 cm 3. Heating is made in oven at temperature of 200 o C-600 o C with 50 o C 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 200 o C, 400 o C and 600 o C were consecutively 85,83%, 58,40% and 35,08% compared to normal concrete. The regression model is y =-0.2802 x + 248.79 and R 2 = 0.8539 of linear regression. Meanwhile, polynomial regression is y = 10-4 x 2-0.3402 x + 255.65 with R 2 = 0.8576.