Making and Curing Concrete Test Specimens in the Field ASTM C31/AASHTO T23 [Urdu/Hindi]


Making and Curing Concrete Test Specimens in the Field ASTM C31/AASHTO T23 [Urdu/Hindi]



*Scope*
1- This practice covers procedures for making and curing cylinder specimens from representative samples of
2- The concrete used to make the molded specimens shall
fresh concrete for a construction project.
be sampled after all on-site adjustments have been made to the
admixtures. This practice is not satisfactory for making specimens
mixture proportions, including the addition of mix water and
from concrete not having measurable slump or requiring
• C172 Practice for Sampling Freshly Mixed Concrete.
other sizes or shapes of specimens.
The program requires a working knowledge of the following ASTM test methods and practices.
Referenced Documents.
• C143/C143M Test Method for Slump of Hydraulic-Cement
Concrete.
• C173/C173M Test Method for Air Content of Freshly Mixed Concrete by the Volumetric Method.
• C231 Test Method for Air Content of Freshly Mixed Concrete
by the Pressure Method.


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