Aberthaw tests of concrete in sea water . MSTon. Sample No. 15Proportions 1 Helderberg & Lehigh Cement mixed3 Sand6 Stone335 lb. Water Cast wet, January 13, 1909. Formswe]e removed January 15, immersed February 27,1909. When cast quaked with Hghttamping. Length 15 ft. 11 in. Average sec-tional area sq. ft. Volume cu. ft. Net Volume ofConcrete Gross Weight 4125 lb. Net Weight ofConcrete Do. per cu. ft. Condition March 3, 1910 A very slight action was noticeableon the front, and the face appearedsofter than it should. Condition December 17, 1913 Condit
Aberthaw tests of concrete in sea water . MSTon. Sample No. 15Proportions 1 Helderberg & Lehigh Cement mixed3 Sand6 Stone335 lb. Water Cast wet, January 13, 1909. Formswe]e removed January 15, immersed February 27,1909. When cast quaked with Hghttamping. Length 15 ft. 11 in. Average sec-tional area sq. ft. Volume cu. ft. Net Volume ofConcrete Gross Weight 4125 lb. Net Weight ofConcrete Do. per cu. ft. Condition March 3, 1910 A very slight action was noticeableon the front, and the face appearedsofter than it should. Condition December 17, 1913 Condition good entire length. Edgesslightly eaten. Face pitted. Sides andl)aci< hardly touched. Condition June 9, 1920 Pitted at low water on face Corners rather badly pittedbetween high and low water. Outerconcrete and corners rotted yi inchin depth. Specimen in fairly goodcondition. Sample No. 15 101 ;5 Sample No. ^23 I A c r I O N O F SEA W A T E R O N CONCRETE
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Keywords: ., bookcentury1900, bookdecade1920, booksubjectconcret, bookyear1920
