Winter erection of precast concrete segments is always difficult when epoxy is used in the joints, because this material will not harden when temperatures fall below a certain level. For erection of the Linn Cove Viaduct to continue through the winter, the epoxy in the joints needed to be heated to at least 40 F (4.4 G) to cure properly. This paper gives results of three tests used to develop a system for heating and insulating joints, describes the heating methods used, and makes recommendations for development of such systems for other projects.
