Aberthaw tests of concrete in sea water . ^4i^^ Sample No. 9 Proportions 1 Cement3 Sand6 Stone343 lb. Water Cast wet, January 11, 1909. Formswere removed January 13, immersed February 23,1909. When cast concrete spattered andquaked. Water ran off. Length 16 ft. IJ4 in. Average sec-tional area sq. ft. Volume cu. ft. Net Volume ofConcrete Gross Weight 4215 lb. Net Weight ofConcrete Do. per cu. ft. Condition March 3, 1910 Apparently in as good condition aswhen placed. Condition December 17, 1913 General condition good. Face alittle pitted. Edges all eat
Aberthaw tests of concrete in sea water . ^4i^^ Sample No. 9 Proportions 1 Cement3 Sand6 Stone343 lb. Water Cast wet, January 11, 1909. Formswere removed January 13, immersed February 23,1909. When cast concrete spattered andquaked. Water ran off. Length 16 ft. IJ4 in. Average sec-tional area sq. ft. Volume cu. ft. Net Volume ofConcrete Gross Weight 4215 lb. Net Weight ofConcrete Do. per cu. ft. Condition March 3, 1910 Apparently in as good condition aswhen placed. Condition December 17, 1913 General condition good. Face alittle pitted. Edges all eaten a little. Condition June 9, 1920 Front corners badly eaten betweenhigh and low water. Concrete fairlysolid. Faces only slightly pitted. Backcorners Sample No. 91913 Sample No. 91920 [17] ACTION O F SEA WATER O N CONCRETE
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Keywords: ., bookcentury1900, bookdecade1920, booksubjectconcret, bookyear1920
