shivakoti deepika, VINOD KG. Experimental and theoretical studies of sandwich beams made of steel, concrete, and steel have shown interesting results. CIBG [Internet]. 2020Dec.30 [cited 2025Sep.11];26(3):20-7. Available from: https://textitlejournal.com/cibgp.com/index.php/1323-6903/article/view/508