Parameters of Compressive Strength of PCC Consequence Concrete the Difference in Curing Time and Specimen Shape

The strength of concrete is determined by its compressive strength. SNI 2847-2013 has that the obtained using a cylindrical specimen with diameter 15 and height 30 cm (C.15) or 10 20 (C.10) at 28 days age. problem commonly encountered in field how to estimate acceptable if it not reached age specimens do meet standards set out SNI. This study aims obtain correction factor for shape test object when cube measuring 15x15x15 (K.15) yet reaching Portland Composite Cement (PCC). Concrete cast 4 forms mold namely K15, K20, C10, C15. Then cured until 7, 14, days. At each immersion age, was tested 3 specimens. results showed average 0.59, 0.81, 1 While form against standard K15 shows value 0.950 1.028 0.813 C15