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ASTM C42 – Standard Test Method for Obtaining and Testing Drilled Cores and Sawed Beams of Concrete


ASTM C42 provides standard procedures for:

  • Obtaining: extracting cylindrical cores by drilling from existing concrete structures and sawing beams from concrete structures.
  • Preparing: procedures to prepare the extracted cores and sawed beams for testing.
  • Testing: evaluating the compressive strength (splitting tensile strength of cores, and flexural strength of beams) of in-place concrete.

Applications of ASTM C42:

  • Evaluating existing structures: this standard is used to assess the strength of concrete in existing structures, especially when concerns arise about its ability to meet current load requirements.
  • Investigating deterioration: ASTM C42 helps identify potential weaknesses or areas of deterioration within the concrete by analyzing core samples from specific locations.
  • Verifying design strength: in some cases, core testing can be used to confirm that the concrete in the structure achieves the design strength specified during construction.

ASTM C42 is a valuable tool for evaluating the condition of concrete structures and ensuring their long-term performance.

ASTM C42 Accredited Laboratory

Applied Testing & Geosciences, LLC is accredited for performing tests using the ASTM C42 standard.

Our laboratory is equipped to conduct comprehensive testing according to ASTM C42. We have the expertise to extract cores from your structure, prepare them meticulously, and perform the necessary strength tests. By following this standard, we can provide valuable data to assess the in-place concrete condition and guide informed decisions regarding your structure’s safety and future. Contact us today to discuss how ASTM C42 testing can be used to evaluate your concrete structures.



drilled cores; concrete; sawed beams; strength; compressive strength; flexural strength; splitting tensile strength; testing; preparation; in-place concrete