Concrete blocks and cement blocks are preformed, manufactured concrete structures that are ready for on-site installation. They are manufactured, cast, and cured in factories or other production ...
The concave concrete structures were designed to pick up sound waves from enemy aircraft, making it possible to predict their flight trajectory, giving enough time for ground forces to be alerted ...
Sulfur concrete is maintained at temperatures around 130° C during mixing and placing ... Polymer cements and mortars are used to bond corrosion resistant tile, brick, or other masonry components.