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THIS CHAPTER ON PREPLACED AGGREGATE (PA) concrete is basically the information from the previous editions of ASTM 169. The original chapter was written by B. A. Lamberton. While there have been some improvements in the chemical composition and performance of the grout fluidifiers, the basic method and testing of PA concrete has not significantly changed since this chapter was last updated by Raymond E. Davis, Jr. in ASTM 169C.
Chemist, Research and Development, EPH Solutions, Charlotte, NC