The effect of variations in stone ash on the compressive strength of concrete

To fulfill the development of construction technology needed construction materials Obtained from the natural result of continuous retrieval. For that, it is necessary Other alternatives by utilizing waste materials. The purpose of this research is to know how strong the value of concrete press normal and concrete with the waste substitution of stone ash as a smooth aggregate with variations, 0% 25%, 50%, 75%, and 100% against the aggregate smooth and to know whether the waste material of DAP stone ash It is used as a material substitute for fine aggregate (sand) in concrete. This research uses experimental methods. The planning proportion of concrete mixture using SNI 03-2834-2000 procedures of making the normal concrete mixture plan. The strong testing of concrete press is each – each variation in stone ash by 0%, 25%, 50%, 75%, and 100% against fine aggregates. The strong result of the concrete press is obtained for strong concrete press normal amounting to 35.99 MPa. While the strong result of concrete press using 25% ash aggregate of stone obtained at 21.58 MPa, decreased by 14.41% of normal concrete press strength, using 50% of ash aggregate stone obtained at 20.10 MPa, decreased by 15.89% of strong concrete press normal, using 75% ash aggregate stone obtained at 16.62 MPa, experiencing a decrease of 19.37% from normal concrete press strength, using 100% ash aggregate stone obtained at 16.64 MPa, decreased by 19.35% da Strong normal concrete press.