More stories about Testing

  • Decorative Slab Core Samples

    We are involved in a dispute on the quality of a decorative slab for which we supplied concrete last fall. The project appears to be fine, but one set of test cylinders failed to meet compressive strength requirements.

  • Testing for Quality Block

    We recently supplied several split-face blocks for a large commercial project. The work continued for several months, and with about two weeks left, we started receiving complaints about the quality of the units from the mason contractor.

  • Putting Testing Technology to the Test

    Modern technology and automation have finally entered the concrete testing laboratory. Several technical committees have updated traditional standards to accommodate this new technology.

  • Strength Testing Woes

    Concrete strength testing is a much larger problem for ready-mix producers than many in the industry realize.

  • What's Worrying Your QC Manager?

    QC managers say testing labs often fail to follow correct procedures. The burden of proof of good performance falls to the producer.

  • Staying Connected

    ASTM C-1644-06 provides guidance on connectors between concrete wastewater tanks and pipes.

  • Measuring Compressive Strength

    Compressive strength is one of the most important measurements in manufacturing concrete. As a producer, I need to know whether this measurement is accurate. How can I be sure my concrete compressive strength results are correct?

  • The Cost of Testing

  • Standardized Tests for SCC

    More of our customers are starting to ask us about the possibility of using self-consolidating concrete. What’s going on with the development of standardized tests for SCC?

  • Concrete Under Fire

    How thick should concrete be to withstand four hours of temperatures of 2000 degree F without degrading or failing? The concrete barrier likely will be exposed to more than 2000 degrees F. The barrier would be more than 30 feet tall and more than 30 feet long. It will be outdoors and subject to...