Joint Sealants

Hot-poured low-modulus elastic type sealer meeting the state requirements shall be used to seal expansion joints. Dow Corning 888 Silicone Joint Sealant, Crafco Roadsaver Silicone #34902NS or approved equal shall be used to seal all other longitudinal and transverse pavement joints.

Bond Breaker

The bond breaker for use with silicone sealants shall be closed cell urethane sized to fit the sealant reservoir.

Joint Construction

Transverse Joints: The locations of transverse joints are continuous across the entire width of the pavement. Joints are located during construction that will insure placement at their designated location.

Expansion Joints: Preformed joint material in expansion joints (Type E or G) equal in depth to the existing pavement shall be attached to the existing pavement in a manner approved by the Engineer that will prevent dislodgement during paving operations and shall be protected with a shield or cap. After paving is complete the cap or shield shall be removed to the limits shown on the drawings to create a cavity for joint sealant.

Joint Sawing: The widening of longitudinal or transverse joints in preparation for joint sealing shall not be performed until the concrete is at least five days old.

Joint Sealing: All joints shall be sealed with the specified sealant. The use of a urethane bond breaker will be required in all joints (transverse and longitudinal) except expansion joints.