Strip Seal Expansion Joint EPDM Seal Replacement Procedure

EPDM seal replacement in strip seal expansion joints can be performed without removing the edge beams, reducing the cost and traffic disruption compared to full joint replacement. The procedure requires specialized tools and trained personnel. Pre-replacement inspection verifies that the edge beams are in good condition and that only the seal needs to be replaced. The edge beams must be inspected for corrosion, cracking, and deformation. If the edge beams are damaged, full joint replacement is required instead of seal replacement. Traffic management during seal replacement requires closure of the lane containing the joint. The closure must be maintained until the new seal is fully installed and cured. The lane closure duration is typically 4-8 hours for a standard seal replacement. Old seal removal requires cutting the seal at each end and pulling it out of the edge beam slots. The seal is typically cut with a utility knife or an angle grinder. The edge beam slots must be cleaned of any remaining seal material and debris before the new seal is installed. New seal installation requires the seal to be stretched and inserted into the edge beam slots. The seal is typically 10-20% longer than the joint length to provide the required prestress. The seal is inserted into the slots using a special installation tool that maintains the correct prestress. The seal ends are cut and sealed with a compatible adhesive. Post-installation inspection verifies that the seal is correctly installed and that the joint is watertight. The seal must be inspected for correct seating in the edge beam slots, correct prestress, and absence of tears or damage. A water test can be performed to verify the waterproofing performance.