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AASHTO T 231-13
- Standard Practice for Capping Cylindrical Concrete Specimens (ASTM C 617-98(2003))
- standard by American Association of State and Highway Transportation Officials, 2013
- Publisher: AASHTO
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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.