"This compilation is sponsored by ASTM International's Committee C12 on Mortars and Grouts for Unit Masonry, and Committee C15 on Manufactured Masonry Units. It contains specifications for products such as mason's lime, concrete brick, building brick and hollow brick (clay or shale), paving brick, facing brick, glazed brick, hollow and solid load-bearing concrete masonry units, masonry cement, facing tile, Portland cement, mortar, grout, concrete paving units, segmental retaining wall units, and prefabricated masonry panels. Test methods for sampling and testing brick, structural clay tile, concrete masonry units, mortar, and grout are also included, as well as methods for measuring drying shrinkage of concrete block, bond strength of mortar to unit masonry, splitting tensile strength of masonry units, masonry flexural bond strength, and water penetration and leakage. Practices and guides address test specimen preparation, proper use of test methods and specifications, and reduction of efflorescence. Also included are specifications for ancillary materials used in masonry construction"--