Aberthaw tests of concrete in sea water . When cast moderate tampingshowed quaking; spots of water onsurface. Length 15 ft. 113^ m. Average sec-tional area sq. ft. Volume cu. ft. Net Volume ofConcrete Gross Weight lb. Net Weight ofConcrete Do. per cu. ft. Condition March 3, 1910 Apparently in as good condition aswhen placed. Condition December 17, 1913 Front and sides somewhat face eaten badly from low tideto mid-tide for about 2 feet, —eaten to a depth of 5 inches. Streakeaten down center of back side fromhigh tide to bad spot. A detailed vie
Aberthaw tests of concrete in sea water . When cast moderate tampingshowed quaking; spots of water onsurface. Length 15 ft. 113^ m. Average sec-tional area sq. ft. Volume cu. ft. Net Volume ofConcrete Gross Weight lb. Net Weight ofConcrete Do. per cu. ft. Condition March 3, 1910 Apparently in as good condition aswhen placed. Condition December 17, 1913 Front and sides somewhat face eaten badly from low tideto mid-tide for about 2 feet, —eaten to a depth of 5 inches. Streakeaten down center of back side fromhigh tide to bad spot. A detailed viewof the back is shown on page 32. Condition June 9, 1920 Seems in about the same conditionas in 1913. Is worse around low badly gone from about 3 feetfrom the bottom to 3 feet from thetop. Steel exposed in the back bad hole occuis about mid-heightalmost one-half tlirough the specimen,another at about three-quarters theheight, or about at high water. Bottomseems good. Fine aggregate rottedbetween high and low Sample No. Sample No. 819-20 16 ACTION O F SEA WATER O N CONCRETE
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Keywords: ., bookcentury1900, bookdecade1920, booksubjectconcret, bookyear1920
