making a mixture of cement and sand for building

abstract aggregate architecture backdrop blend builder building buildingfoundation buildingmaterials buildings cement cementbag cementblend cementmix concrete concretework construction constructionprocess constructionwork design detail dirty durable engineering flooring foundation hardening industrial infrastructure labor making manualmixing masonry materials mixing mixingprocess mixture mortar preparation sand sandcement sandmix sitework strength strong structural structure wall water worksite