Nur Fajriani Rauf, Syarifah Rabiatul Adawiah, Burhanuddin Hafid. DETERMINATION OF METHYLENE BLUE INDEX IN SILICA SAND–CLAY MIXTURES USING ASTM C837-09 Determination of Clay Content Based on the Standard Test Method for Methylene Blue Index (ASTM C83-09) . R [Internet]. 2026 Oct. 31 [cited 2026 Nov. 1];4(2):391-6. Available from: https://journal.uin-alauddin.ac.id/index.php/ritma/article/view/73216