AASHTO T 276-09 PDF
Standard Method of Test for Developing Early-Age Compression Test Values and Projecting Later-Age Strengths (ASTM Designation: C 918-02)
standard by American Association of State and Highway Transportation Officials, 2009
his test method covers a procedure for making and curing concrete specimens and for testing them at an early age. The specimens are stored under standard curing conditions and the measured temperature history is used to compute a maturity index that is related to strength gain.
This test method also covers a procedure for using the results of early-age compressive-strength values to project potential strength of concrete at later ages.
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