Show A Use for Broken Bricks I In every brick yard and around every new building there accumulates a largo quantity of broken bricks for which there is no present use and which are usually I consigned to the dump along with other debris There is a purpose however for i which much if not all of this brick waste might be utilized In Cuba and some of the other Spanish countries ordinary brick dust made from hard burned and finely I powdered bricks is mixed with common i lime and sana and used as a substitute for 1 hydraulic cement j An American engineer whose long residence resi-dence in Cuba afforded him ample opportunities oppor-tunities for testing its merits says that he found this mixture in all respects superior to the best Rosendale hydraulic cement for culverts drains tanks cisterns and even for roofs In the course of experiments with this brick dust cement a block of the mixture half an inch in thickness made 1 without sand was immersed in water for four months and upon removal at the end 1 of that time it bore a pressure of fifteen pounds per square inch without crushing or splitting Philadelphia Record I |