Show EFFECT OF SEA SEAWATER SEAWATER SEAWATER WATER ON CONCRETE WASHINGTON Aug 26 With With the thelast thelast thelast last of or tho the three barges barJes built buill of at concrete concrete concrete con con- crete just completed for tor work officials of or the Isthmian canal are to undertake further further fur fur- ther novel no experiments with Ith this construction construction construction con con- material According to a a. report from the canal zone experiments are to tobo tobo tobo bo undertaken at nt once on the Atlantic an and 1 Pacific divisions of the canal to determine de determine de- de termine the effect of or sea water on the tho for the tho lower locks a at Gatun and MIraflores l The object Is to ascertain ascer ascer- tain tairi If It steps will wm be bo necessary In order to protect the concrete Slaps of ot concrete will he be subjected to the sea Elea water Some of or them will be left leftIn leftIn leftIn In their natural state an and 1 some Mme will be treated with sodium silicate In the form of or soluble glass In solutions of or different strength and some of them will be bo treated treated treated treat treat- ed with alum and soap RonI giving sl three three- quarters of or a pound of soap to a gallon of water applied hot for the tho first wash and twenty-four twenty hours later a solution of alum two t ounces to the gallon applied d cold The only walls that will be bo subjected to action of at salt water will be those of or orthe the tho lower sea sen level locks lock and the tho guide walls leading Into the tho locks At MIraflores MIra Mira- flores fibres about square feet service will be thus exposed and at Gatun about square feet |