Section 4136. Joint Fillers and Sealers.

4136.01 DESCRIPTION.
Joint fillers and sealers shall be of the type required in the contract documents.

4136.02 CONTRACTION JOINT SEALERS.
Material for sealing sawed contraction and center line joints and other joints, as shown in the contract documents, shall meet the following requirements:

A. Poured Joint Sealer.
Hot poured joint sealer shall be composed of petropolymers and be supplied in solid form. The sealer shall meet requirements of ASTM D 6690, Type IV.

Cold applied sealers shall also meet the above physical requirements.

B. Backer Rod.
Backer rod used in conjunction with joint sealers shall be of a composition approved by the Engineer. When used with hot poured sealers, the rod must withstand, without damage, the high temperatures inherent to the sealers. The backer rod shall have a maximum of 5% absorption when immersed in water for 24 hours with the ends sealed. The backer rod shall be of a size that compression is required for installation in the joint, so that it maintains its position during the sealing operation. Backer rod shall be dry. Inspection and acceptance of backer rod shall be in accordance with Materials I.M. 436.04.

C. Preformed Elastomeric Joint Seal.
AASHTO M 220 shall apply, including requirements for lubricant adhesive. The dimensions and shape shall be subject to approval of the Engineer.

4136.03 EXPANSION JOINT FILLER AND SEALER.
Material for filling expansion joints shall be one of the following types. When the type is not specified, resilient filler shall be used.

A. Resilient Filler.
Resilient filler shall meet requirements of AASHTO M 213 and shall be furnished in strips of dimensions shown in the contract documents. When the self expanding type is specifically required, the material shall meet requirements of AASHTO M 153, Type III. Sealer used with these fillers shall meet requirements of Article 4136.02, A. Other resilient fillers may be approved by the Engineer.

B. Flexible Foam Expansion Joint Filler.

Flexible foam expansion joint filler shall be of the size designated in the contract documents and shall be resistant to petroleum derivatives.  The joint filler shall comply with the requirements of ASTM D 1752, Sections 5.1 to 5.4; with Section 5.3 modified to 10 psi (0.069 MPa) minimum and 25 psi (0.173 MPa) maximum when tested in accordance with AASHTO T 42.  Approved sources for flexible foam expansion joint fillers are listed in Materials I.M. 436.05, Appendix A.

Sealer used with this filler shall meet the requirements of Article 4136.02, A.

C. Tire Buffings Expansion Joint Filler.
When designated in the contract documents tire buffings shall be used to fill expansion joints.  Tire buffings shall consist of buffings from the tire retreading industry.  Approved sources for tire buffings for expansion joints are listed in Materials I.M. 436.06, Appendix A.  The tire buffings shall be clean, dry, and without any contamination.  Tire buffings shall be placed loose and struck off level.  Any compacted material shall be removed and replaced with loose material.  Sealer shall meet the requirements of Article 4136.02, A.  Approved sources for sealers are listed in Materials I.M. 436.01, Appendix A.

D. Elastomeric Joint Seals.
Elastomeric joint seals shall be of the size designated in the contract documents and of a shape approved by the Engineer. The seal and the lubricant adhesive shall meet requirements of AASHTO M 220.

Seals with splices will be acceptable only when splices are made using factory type methods approved by the Engineer. A splice shall not occur within 1 foot (0.3 m) of a sharp bend, when placed in final position, and no piece shall have more than one splice.