UTILIZATION OF BLONDOS STONE ON POROUS CONCRETE

Porous concrete can be used as a drainage system that allows rainfall to percolate into the ground, reduce stormwater runoff, and recharge groundwater. consists of coarse aggregate cement paste. Stone mining waste in river, namely medium-sized gravel which is often called blondos stone, has not been optimally building material. Based on these reasons, it tried use stone porous concrete. Three variations gravel-cement ratio were used, is: 4, 5, 6, 3 water-cement ratio, 0.30, 0.35, 0.40. There are 27 specimens cylinders, each variation specimens. Permeability compressive strength testing after 28 days curing. The conclusions this study are: increasing weight decreases increases permeability have no significant effect density Blondos adequate for manufacture