More stories about Testing

  • Aggregate Moisture in Concrete

    The moisture condition of aggregate in concrete is very important. The absorption of the aggregate indicates the quantity of water which will be absorbed into the pore structure.

  • When Bad Testing Happens to Good People

    Apparently the topic of cylinder testing gone wrong struck a chord with TCP readers, who wrote back to share stories similar to the one in last month’s blog. Following are just two humorous examples.

  • Preventing Slump Loss

    Many things can cause rapid slump loss. Aggregate, cement chemistry, fly ash sources, and admixtures are culprits.

  • Profiting from Quality Concrete

    There is a widely held and incorrect belief in the concrete industry that a producer's quality control (QC) department takes away from and does not add to the bottom line.

  • Bubble Trouble

    Everyone in the concrete industry has received the dreaded call about low strength on a job. Typically, high water content, high air content, or low standards from the testing company is the primary cause of the problem.

  • Quality's Costs

    Q: I'm a quality control manager for a mid-size ready-mix producer and am dealing with several quality issues which need resolution. I am having difficulties convincing the owner that he needs to increase funding for the quality system in order to produce more consistent concrete. How can I...

  • ASTM International Launches Supplier's Declaration of Conformity

    Program Houses Registry of Product Conformity to Standard Test Methods

  • Working With Your Lab

    Q: We are experiencing low compressive strength test results on some concrete we supplied to a job. We know it is due to poor testing of the cylinders. How do we convince the contractor and engineer where the issue is?

  • Roller-compacted concrete testing method

    We are seeing more news surrounding one of the more exciting innovations in the concrete industry: roller-compacted concrete (RCC).

  • Making a Quality Hire

    Q: We are a small but growing ready-mix producer. We have just decided to open a portable plant to service a multiyear project. We are considering hiring a full-time quality control manager. At what annual production volume does it make sense to make this hire?