1. ASTM C 33, 2003. Standard specification for concrete aggregates. Annual Book of Standards, 4.
2. ASTM C 131, 2006. Standard test method for resistance to degradation of small-size coarse aggregate by abrasion and impact in the Los Angeles machine. Annual Book of ASTM Standards, 4(02).
3. ASTM C 127, 2007. Standard test method for density, relative density (specific gravity), and absorption of coarse aggregate. Annual book of ASTM standards.
4. ASTM C 666, 2009. Standard test method for resistance of concrete to rapid freezing and thawing, Annual Book of ASTM Standards.