More stories about Ready-Mixed Concrete

  • How Often to Check Mixing Drums

    We have our plants inspected and certified in accordance with the checklist in Section 3 of the National Ready Mixed Concrete Association's Quality Control Manual. This certification includes truck mixer inspection to ensure that there's no appreciable accumulation of hardened concrete in the drum...

  • Handling Low-Strength Test Results

    Are there any simple guidelines for use when we get low-strength test results? The low tests seem to make owners especially nervous, and we'd like to have an authoritative document that lays out a course of action following the report of a low test.

  • Does Cement Brand Affect Air Content?

    When we change from one cement brand to another, we often need to adjust the dosage of our air-entraining admixture. Sometimes a new shipment of cement from the same source also requires dosage changes. Is this normal, or are we doing something wrong?

  • Acidic Mix Water

    Our water source for use in ready-mixed concrete is acidic, with a pH ranging from 5 to 6. What are the effects of this low pH, and what can be done to reduce acidity?

  • A Possible Use for Reclaimer Sludge

    Can reclaimer sludge be used to reduce soil acidity?

  • Aggregate, concrete construction get new codes

    What are the new North American Industrial Classification System (NAICS) codes for aggregates and concrete construction businesses?

  • Controlling Material Costs

  • Separating storm and process water

    The county engineer suggested we revise the drainage around our plant to separate our storm water from our process water. Why would I want to do this, and how would this affect my storm water permit?