Le TTT, Mai MTH, Le Sy Chinh LSC, Nguyen Van Lam NVL. PROPERTIES OF MORTARS USING SPENT COFFEE GROUNDS TO REPLACE A PART OF NATURAL RIVER SAND. HDUJS [Internet]. [cited 2025Nov.13];79(09). Available from: https://hdujs.edu.vn/index.php/hdujs/article/view/965