concrete + hard substance used in building made by mixing cement, sand, small stones, and water ☊ concrete ☊ 
bê toong ☊ concrete ☊ bê tông ☊ concrete ☊ bích toong ☊ concrete + hard substance used in building made by mixing cement, sand, small stones, and water ☊ concrete ☊ bê toong ☊ concrete ☊ bê tông ☊ concrete ☊ bích toong ☊