Rahmani Kadarningsih
The high demand and low supply of local aggregates have caused the increase in the number of ready-mix concrete providers. Studies show that the properties of the aggregate used in raw materials affect the quality of ready-mix concrete, apart from other factors, such as the accuracy of the implementation and the mix design methods. The results of the coarse aggregate gradation test indicated that there were gaps, especially in the Bonda Raya material. The test results showed that the concrete using SNI 7656:2012 method produced a higher compressive strength compared to SNI 03-2834-2000 method for both Pancuran and Bonda Raya quarry materials at 15 MPa of strength target. The compressive strength of concrete using the SNI 7656:2012 mix design for strength target of 15 MPa and 30 MPa for both Pancuran and Bonda Raya materials produced the same proportion of the mixture. The compressive strength of concrete using SNI 7656:2012 mix design at 30 MPa of strength target did not achieve the expected strength target. In terms of aggregate quality, the Pancuran and Bonda Raya materials shared nearly similar qualities. The aggregate specific gravity made the mix design of the Bonda Raya material produced a greater amount of aggregate when using the SNI 03-2834-2000 method and had an effect on compressive strength. © The Authors, published by EDP Sciences.
Gorontalo State University, Indonesia
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