Show Concrete Curing Means Highways at Less Cost To save labor and speed up the work a method of ot concrete curing has been Invented The chemical tion used Is a light dust substance and Is applied by sifting It from a hopper I on the rear of ot n a truck on which a n supply supply sup sup- ply of ot the material Is carried It absorbs absorbs absorbs ab ab- ab- ab sorbs moisture from the air and prevents pre pro v vents dr drying out of ot the cement One man can cun treat a long stretch of ot road In one da day One or two tr treatments with the material each season are said to be effective In la laying the dust by binding to together ether the particles that may have accumulated on gravel or macadamized mac mac- roads |