• Several updates of important ASTM standards affecting concrete producers have been approved. Here is a summary of some recent committee announcements.

    C138/C138M - Standard Test Method for Density (Unit Weight), Yield, and Air Content (Gravimetric) of Concrete has been revised to C138/C138M-07

    C78 - Standard Test Method for Flexural Strength of Concrete (Using Simple Beam with Third-Point Loading) has been revised to C78-07.

    C1567 - Standard Test Method for Determining the Potential Alkali-Silica Reactivity of Combinations of Cementitious Materials and Aggregate (Accelerated Mortar-Bar Method) has been revised to C1567-07

    C192/C192M - Standard Practice for Making and Curing Concrete Test Specimens in the Laboratory has been revised to C192/C192M-07

    To view the document summary page on these and other standards, visit www.astm.org. You can quickly access the information by entering the standard designation number in the search engine.

    Related Articles Spec Watch: New Concrete Wall Standards

  • Problem Clinic: Preparing for an SCC Job