Standard Practice for Capping Cylindrical Concrete Specimens
|Publication Date:||12 April 1984|
|ICS Code (Concrete and concrete products):||91.100.30|
This method covers apparatus, materials, and procedures for capping freshly molded concrete cylinders with neat cement and hardened cylinders and drilled concrete cores with high-strength gypsum plaster or sulfur mortar.
A cap shall be at least as strong as the concrete. The surfaces of capped compression specimens shall be plane within a tolerance of 0.002 in. (0.05 rom) across any diameter. During each day's capping operation, the planeness of the caps on at least three specimens representing the start, middle, and end of the run shall be checked by means of a straight-edge and feeler gage, making a minimum of three measurements on different diameters, to ensure that the surfaces of the caps do not depart from a plane by more than 0.002 in.
The values stated in inch-pound units are to be regarded as the standard. The metric equivalents of inch-pound units may be approximate.
This standard may involve hazardous materials, operations, and equipment. This standard does not purport to address all of the safety problems associated with its use. It is the responsibility of whoever uses this standard to consult and establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. For specific precaution statements see 3.3 and 126.96.36.199.