chabibullahM. and BagioT. 2019. CEMENT ADDITIVE USE REDUCTION FACTORS TO IMPROVING THE QUALITY CONCRETE BIOCONC. IJTI International Journal of Transportation and Infrastructure eISSN 2597-4769 pISSN 2597-4734. 2, 2 (Mar. 2019), 77-84. DOI:https://doi.org/10.29138/ijti.v2i2.786.