Aberthaw tests of concrete in sea water . Sample No. 61913 Sample No. 61920 [14] ACTION O F SEA WATER O N CONCRETE. Sample No. 7 Proportions 1 Cement3 Sand6 Stone182 lb. Water Cast quite dry, January 11, were removed January 13,1909. Specimen immersed February27, 1909. When cast did not quake. Length 10 ft Average sec-tional area sq. ft Volume cu. ft Net Volume ofConcrete Gross Weight 4150 lb Net Weight ofConcrete Do. per cu. ft. Condition March 3, 1910 Slightly pitted on the sides — moreso on front face, where the fine ma-terial had apparently been ero
Aberthaw tests of concrete in sea water . Sample No. 61913 Sample No. 61920 [14] ACTION O F SEA WATER O N CONCRETE. Sample No. 7 Proportions 1 Cement3 Sand6 Stone182 lb. Water Cast quite dry, January 11, were removed January 13,1909. Specimen immersed February27, 1909. When cast did not quake. Length 10 ft Average sec-tional area sq. ft Volume cu. ft Net Volume ofConcrete Gross Weight 4150 lb Net Weight ofConcrete Do. per cu. ft. Condition March 3, 1910 Slightly pitted on the sides — moreso on front face, where the fine ma-terial had apparently been eroded,exposing the stones but leaving themfirmly embedded. Condition December 17, 1913 Specimen entirely eaten through atS}i feet above low water, about a footin length, all gone. Bars holding to-gether. Back side eaten on a slant for10 feet. Only slightly eaten below lowwater line. Material dead at eatensection. Condition June 9, 1920 Specimen entirely gone betweenhigh and low water. Top of bottompart badly disintegrated. In very goodctmdition at the very bottom. Fineaggregate rotted for about yi inchin depth
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Keywords: ., bookcentury1900, bookdecade1920, booksubjectconcret, bookyear1920
