Download or read book Sealers for Joints and Cracks in Concrete Pavements written by National Research Council (U.S.). Highway Research Board and published by . This book was released on 1959 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt: Paper 1: The performance of sealing materials for sawed joints is being studied by a laboratory test in which the joints are opened and closed at speeds of the order of 1/32 inch per hour. The sealers are applied to sawed joints which are initially 1/8 or 3/16 inch wide and which are usually opened an additional 1/8 inch at 0 F during the tests. Paper 2: 16 laboratories were asked to participate in the evaluation of bond-ductility, flow, and penetration tests for joint sealing compounds. three hot-poured type rubber -asphalt sealants were used in this testing program. the material samples, together with special mortar test blocks for the bond-ductility test, were sent to all participants from one centralized source, the federal specification SS-R-406C procedure was used, emphasizing certain details in order to have the test better controlled.