Aberthaw tests of concrete in sea water . Sample No. 13Proportions 1 Atlas Cement 3 Sand 6 Stone 345 lb. Water Cast wet, January 12, 1909. Formswere removed January H, immersed February 27,1909. When cast flowed off shovel easily;slight tamping showed quaking; spat-tered when tamped hard. Surfaceglazed. Length 15 ft. 11 in. Average sec-tional area sq. ft Volume cu. ft Net Volume ofConcrete Gross Weight 4100 lb Net Weight ofConcrete Do. per cu. ft. t( Condition March 3, 1910 A very slight action was noticeableon the front face. Condition December 17, 1
Aberthaw tests of concrete in sea water . Sample No. 13Proportions 1 Atlas Cement 3 Sand 6 Stone 345 lb. Water Cast wet, January 12, 1909. Formswere removed January H, immersed February 27,1909. When cast flowed off shovel easily;slight tamping showed quaking; spat-tered when tamped hard. Surfaceglazed. Length 15 ft. 11 in. Average sec-tional area sq. ft Volume cu. ft Net Volume ofConcrete Gross Weight 4100 lb Net Weight ofConcrete Do. per cu. ft. t( Condition March 3, 1910 A very slight action was noticeableon the front face. Condition December 17, 1913 Condition fairly good from top tolow water line. One corner at low watereaten in about 1^ inches. Sides good,hack good, liottom good. Face eaten,a little rough all the way down. Edgeseaten off. Condition June 9, 1920 Badly eaten between high and lowwater. Concrete very rotten for adepth of 1 to 2 inches in middle ofspecimen. Corners could be flaked oftin large chunks.
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Keywords: ., bookcentury1900, bookdecade1920, booksubjectconcret, bookyear1920
