Aberthaw tests of concrete in sea water . Sample No. 231913 Sample No. 231920 [30] ACTION OF SEA WATER O N CONCRETE. Sample No. 24Proportions 1 Cement with 5% (or 23>i lb.) Pulverized Clay3 Sand6 Stone275 lb. Water Cast wet, January 14, 1909. Formswere removed January 16, immersed February 23,1909. When cast showed quaking andspattered from light tamping. Length 15 ft. II4 in. 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 The outer face was
Aberthaw tests of concrete in sea water . Sample No. 231913 Sample No. 231920 [30] ACTION OF SEA WATER O N CONCRETE. Sample No. 24Proportions 1 Cement with 5% (or 23>i lb.) Pulverized Clay3 Sand6 Stone275 lb. Water Cast wet, January 14, 1909. Formswere removed January 16, immersed February 23,1909. When cast showed quaking andspattered from light tamping. Length 15 ft. II4 in. 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 The outer face was somewhat soft. Condition December 17, 1918 Good above water line. Surfacesl)etween high and low tide eaten some-what. Corners eaten all the way fromhigli water to bottom. Took closephotogi-aph of small section showingtypical eating. Face little worse thansides. Conditionjlune 9, 19!20 Face, sides and back pitted betweenhigh and low water, especially justabove low water. Hack corners badlyeaten.
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Keywords: ., bookcentury1900, bookdecade1920, booksubjectconcret, bookyear1920
