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Astm D6760 02 Pdf 16

Astm D6760 02 Pdf 16

Astm D6760 02 is a standard test method for integrity testing of concrete deep foundations by ultrasonic crosshole testing. It was approved by the American Society for Testing and Materials (ASTM) in 2002 and last updated in 2016. This test method covers procedures for checking the homogeneity and integrity of concrete in deep foundation such as bored piles, drilled shafts, concrete piles or augercast piles. It can also be extended to diaphragm walls, barrettes, dams, etc.

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The test method uses data from ultrasonic probes lowered into parallel access ducts, or in a single access duct, in the deep foundation element to assess the quality of concrete between the probes. The data are used to confirm adequate concrete quality or identify zones of poor quality. If defects are detected, then further investigations should be made by excavation or coring the concrete as appropriate, or by other testing methods such as ASTM D1143, D4945 or D5882, and measures taken to remediate the structure if a defect is confirmed.

The test method measures the propagation time and relative energy of an ultrasonic pulse between parallel access ducts (crosshole) or in a single tube (single hole) installed in the deep foundation element. This method is most applicable when performed in tubes that are installed during construction. The test method has some limitations, such as the need for steel access ducts for crosshole tests to prevent debonding, and the difficulty of detecting flaws that are not massive enough or very near to the access duct for single hole tests.

Astm D6760 02 Pdf 16 is a document that contains the full text of the standard test method in PDF format. It has 16 pages and can be downloaded from the ASTM website or other online sources. The document provides detailed information on the scope, significance and use, apparatus, procedure, calculations, report, precision and bias, and keywords of the test method. It also includes several figures and tables to illustrate the test setup and results.

The document is useful for engineers, contractors, inspectors, and researchers who are involved in the design, construction, evaluation, and maintenance of concrete deep foundations. It provides a reliable and standardized way to assess the integrity of concrete in these structures using ultrasonic waves.

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