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WINFIELD
LOCK AND DAM FREEZE-THAW BEAMS
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 In 1976, the U.S. Army Corps of Engineers, Huntington District installed 4 each, 12- by 12- by 36-in. concrete beams at Treat Island for continuous wet-dry cycles and seasonal freeze-thaw durability studies. The concrete beams are representative of an exterior mix design used at |
Winfield Lock Replacement at which the climate of Kanawha County, West Virginia is considered to be in the severe weather region, as defined by CRD-C 133-85, "Concrete Aggregates" and therefore similar to the Treat Island exposure environment. The sources of the constituent concrete materials are given below: Cement: Armstrong Cement, Cabot, PA Type II, Low Alkali, Low heat of hydration ASTM C 150 Fly ash: American Electric Power John E. Amos Power Plant, St. Albans, WV Class F, ASTM C 618 Fine Aggregate: Richard's and Son, Letart Falls, OH Natural, quarried and sized Admixtures: Grace Construction Products W. R. Grace & Co., Cambridge, MA Air Entraining Admixture Daravair 1000. | |