Aberthaw tests of concrete in sea water . ft. Condition March 3, 1910 Front face showed some slight sur-face erosion, extreme at about half-tide. Condition December 17, 1913 Face eroded badly for full and back i)robably as good aswhen poured. Condition June 9, 1920 Face eroded, but seemingly noworse than in Corners slightlyrounded. A bad crack coidd be seen onone side and a large chunk was out ofa back corner. As specimen was laid onthe dock preparatory to replacing inits position under the piers, it shat-tered badly at about mid-length. Thisshattering was not due to
Aberthaw tests of concrete in sea water . ft. Condition March 3, 1910 Front face showed some slight sur-face erosion, extreme at about half-tide. Condition December 17, 1913 Face eroded badly for full and back i)robably as good aswhen poured. Condition June 9, 1920 Face eroded, but seemingly noworse than in Corners slightlyrounded. A bad crack coidd be seen onone side and a large chunk was out ofa back corner. As specimen was laid onthe dock preparatory to replacing inits position under the piers, it shat-tered badly at about mid-length. Thisshattering was not due to any blow,but simply to the weight of one endwhen it was being laid on the concrete in the center of thespecimen was fovmd badly rottedalong cracks which were invisiblebefore the specimen was l)roken. Thechunks broken off, however, .seemed tolie fairly .sound. Many cracks could beseen to have existed for some time, asthe concrete was l)a(l].\ discoloredalong them. In placing, the .specimensplit down the middle nearly to its Sample No. 11913 Saiiiplc No. 1 \9] ACTION O F SEA WATER O N CONCRETE
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Keywords: ., bookcentury1900, bookdecade1920, booksubjectconcret, bookyear1920
