Use of seal push out testing on modular bridge expansion joints

This work explores testing procedures of modular bridge expansion joints. It provides a background on the use of Modular Bridge Joint Systems. Discussion of testing procedures for use in Modular Bridge Expansion Joints is presented. Specific investigation was made into the Seal Push Out Test, a test designed to check the strength of the connection between the seal and the beam. Seal Push Out Testing was conducted on various specimens. The data from the test helped investigate various characteristics on the testing methods. The reaction of the seal to the loading was examined in an attempt to allow SPO testing to be done on smaller samples which are lighter and less expensive.; The results strongly suggest that the seal being tested during the Seal Push Out Test acts as an individual seal, not as part of a system. In addition, the results support the assertion that there is no distinguishable difference between a seal attached to an end beam and a seal not attached to an end beam. Test specifications should allow SPO testing to be conducted on specimens consisting only of two edge beams and one seal. This type of section may cost 1/3 the price of the specimen required by the NCHRP Report 467.