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    Chapter 32—Preplaced Aggregate Concrete

    Published: Jan 1978

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    The term “preplaced aggregate” (PA) concrete describes a method of placing gap graded concrete. As an alternative to blending the fine and coarse aggregate, cement, and water and placing the mixture in a form, coarse aggregate is preplaced in the form and a structural grout is injected into the coarse aggregate mass in such a way as to fill void spaces where it hardens to form dense homogeneous concrete. The process was developed by Wertz to whom a U.S. patent [1] was issued in 1943.

    Author Information:

    Lamberton, BA
    Vice President, Engineering, Intrusion-Prepakt, Inc., Cleveland, Ohio

    Committee/Subcommittee: C09.41

    DOI: 10.1520/STP35632S