ASTM C470/C470M-15 PDF Download

The ASTM C470/C470M-15 standard outlines the requirements for molds used in the formation of cylindrical concrete specimens. The standard covers both reusable and single-use molds. Reusable molds must be constructed using nonabsorptive materials and undergo testing for water leakage. Single-use molds can be made from various materials such as sheet metal, plastic, or suitably treated paper products. These materials must meet specific requirements for water leakage, absorptivity, and elongation. The standard also specifies additional requirements for each type of single-use mold, including wall thickness, bottom design, material, side walls, bottom caps, waterproofing, metal thickness, bottom design, top edge, and coating. Test procedures for elongation, absorption, and water leakage are also outlined. The standard covers molds with diameters ranging from 50 mm to 900 mm. It is important to note that the accompanying notes and footnotes in the standard provide explanatory information and should not be considered as requirements of the standard.