A brick can be composed of clay-bearing soil, sand, and lime, or concrete materials. Bricks are produced in numerous classes, types, materials, and sizes are produced in bulk quantities

>Clay contents of soils, containing varying amounts of allophane, have been calculated from measurements of surface areas of separated fractions using adsorption of nitrogen, water-vapour

>Cement is seldom used on its own, but rather to bind sand and gravel (aggregate) together. Cement mixed with fine aggregate produces mortar for masonry, or with sand and gravel, produces concrete

Clay contents of soils, containing varying amounts of allophane, have been calculated from measurements of surface areas of separated fractions using adsorption of nitrogen, water-vapour