Pengaruh Variasi Perawatan Beton Terhadap Sifat Mekanik High Volume Fly Ash Concrete Untuk Memproduksi Beton Kuat Tekan Normal

concrete is not too fast to lose water. In this research, High Volume Fly Ash (HVFA) concrete is done by several variations of treatment that is by soaked, watered, and covered by wet sack, with the quality of concrete that is planned is f'c 22,5 Mpa, using a mix design method of ACI. Tests conducted are tests of compressive strength and water absorption. The result showed that the average compressive strength value of normal concrete with treatment was soaked at 18.26 MPa at 28 days and 20.24 MPa at age 56 days, higher than HVFA concrete with variation of treatment. The mean compressive strength value of HVFA concrete with soaked treatment was 14.58 MPa aged 28 days and 17.27 MPa aged 56 days, higher than HVFA concrete with watered treatment of only 9.34 MPa age 28 days and 11.89 MPa age 56 days, while HVFA concrete with treatment closed sack of 12.88 MPa age 28 days and 15.99 MPa age 56 days. The result of water absorbtion test on concrete object of age 56 day was found percentage of normal concrete water absorbed by 2,869%, water absorption of HVFA concrete with 2,479% soak treatment, 2.73% watering treatment and 2,603% covered treatment sack. The compressive strength value of HVFA concrete with treatment was soaked higher than the watered and covered treatment of the sack. And the absorption capacity of HVFA concrete with treatment in the soak is lower than the treatment of watered and covered sacks