| dc.description.abstract |
Concrete is a mixture consisting of fine aggregates, coarse aggregates, water, and cement that serves as a binder and filler for coarse and fine aggregates. In the development of the masses, the price of cement has increased every year. This is because one of the materials that make cement comes from nature which is a material that is not renewed. Therefore, there is a desire to give rise to a new material alternative that is a modification of the existing material, namely charcoal ash. There are several other factors that are the reason for the selection and use of concrete is due to its effectiveness and efficiency. The purpose of this study was to determine the ability to produce charcoal ash and how much the compressive strength changes in the concrete mix due to charcoal ash waste when compared to the initial concrete mixture. This study used 8 cylindrical test objects with variations in the percentage of charcoal ash by 0%, 4%, 8%, and 12%. Based on the results of the research and tests carried out, it is known that the greater the percentage of charcoal ash, the lower the compressive strength of the concrete produced. The results of this study are that the compressive strength of concrete with 4% charcoal ash is 23.03 MPa, an increase from normal concrete, whereas for 8% charcoal ash it is 19.61 MPa and 12% is 18.25 MPa which has decreased compared to the normal concrete compressive strength value of 22.17 MPa.
Key words: Concrete, Charcoal Ash, Compressive Strength of Concrete | en_US |
