Miracle concrete: the great modern industry (1909)
Miracle Pressed Stone Co. · Miracle Pressed Stone Co. · leaf 14
having J/4-inch mesh. CRUSHED STONE.Such stone from a crusher as is retained in a J/^-inch screen. BANK GRAVEL. Such material as is obtained from a pit or river containingboth sand and gravel. AGGREGATE. Any material, such as broken stone, gravel, or other frag-ments used with cement and sand… … Illustration No. 5—Removing the Cores. CEMENT. Any American or imported Portland cement, which willpass the tests required by The American Society for TestingMaterials. QUALITY OF SAND. Sand suitable for concrete work must not be finer than theabove described; must be sharp and gritty; not soft or…
