ABSTRACT In Kerinci Regency, especially around Gunung Tujuh and Siulak Deras areas, people generally use materials from Sungai Rumpun quarry and Siulak Deras quarry. Preliminary test results in the form of an organic matter test showed that the organic matter in the aggregate from the Sungai Rumpun quarry had a high mud content (not meeting SNI), while the aggregate from the Siulak Deras qua…