Washington · answered by Verika · verified against sources
What air content is required for concrete on Washington DOT projects?
"Air content for concrete Class 4000D shall conform to Section 6-02.3(2)A1. For all other concrete, air content shall be a minimum of 4.5 percent and a maximum of 7.5 percent for all concrete placed above the finished ground line unless noted otherwise." [1] "a. The concrete shall maintain an air content between 4.5 and 7.5 percent." [1] "Commercial concrete placed above the finished ground line shall be air entrained and have an air content from 4.5 percent to 7.5 percent in accordance with FOP for AASHTO T 152." [2] "Air content shall be tested in accordance with WSDOT Test Method T 818, and shall conform to Section 6-02.3(2)A." [2] "Air content shall conform to Section 6-02.3(2)A." [2] "the lower Specification limit for Air Content shall be 3 percent, and the upper Specification limit for Air Content shall be 7 percent." [3] "The lower Specification limit for air content shall be 3 percent, and the upper Specification limit for air content shall be 7 percent." [3]
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