Concrete cylinder strength

ASTM C39 · C42 · C174 · AASHTO T 22

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Concrete cylinder and core strength

ASTM C39 · C42 · C174 · AASHTO T 22

Units US customary SI (metric)

Specimens

Maximum load, P, lbf

Average diameter, d, in.

Length, in.

Diameter and capped length as tested, the maximum load, and (optional) the core’s length by C174 as drilled, for thickness.

Specification

Specified strength, f′_c, psi (optional)

Example values. Your agency’s specification sets the limits.