New Standard Gets to Core of Axis Length Technicians drill
concrete-core samples from structures to find in-place physical
properties such as strength, density, cracks, and deterioration.
On Aug. 10, ASTM Committee C09 on Concrete and Concrete
Aggregates approved new ASTM C 1542/C 1542M, Standard Test
Method for Measuring Length of Concrete Cores. The standard
provides two procedures that measure a core along its axis to
determine its length, used in: Absorption, density, and voids
analysis; Cement-content analysis; and A task group of ASTM
Subcommittee C09.69 on Miscellaneous Tests developed the
standard. Subcommittee chair Howard (Buck) Barker, PE, a
construction materials engineer with RVT Engineering Services,
LLC, Wausau, Wis., says the new standard can be used to measure
any core along its axis, and explains why its important. The
primary (most frequent) use will be calculating compressive
strength to investigate the current condition of a structure or
to evaluate low strength test results (by American