JOINT SEALING FOR ZERO-MAINTENANCE IN PORTLAND CEMENT CONCRETE PAVEMENTS

The report holds that a premium joint sealant properly applied into a reservoir correctly designed, spaced, and cleaned will produce a zero-maintenance joint. A number of important functions which a sealant must perform are reviewed, specifications and materials used to seal joints are discussed, and comments are made on the joint shape factor, and on the availability of materials and techniques. A sealant must keep water and fines from infiltrating through the joint, and must not allow larger incompressibles to reamin in the joint space, while being able to maintain these properties over a long span of time. The ASTM has prepared a tentative specification and test methods for joint sealor, hot-poured, elastomeric type for Portland Cement concrete pavements. This includes a resiliency requirement as a measure of the ability to reject incompressibles, allows no flow at 158 deg F and has an artificial weathering test requirement to indicate life expectancy. The optimizing of joint shape is urged together with minimizing of the depth of seal. Proper joint cleaning (sandblasting or high pressure jet water cleaning) is equally important.

  • Supplemental Notes:
    • Paper presented to the American Society of Civil Engineers, Pavement Design Specialty Conference, Georgia Institute of Technology, Atlanta, Georgia.
  • Corporate Authors:

    Superior Products Company, Incorporated

    833 47th Avenue
    Oakland, CA  USA  94601
  • Authors:
    • Knoblock Jr, G C
  • Publication Date: 1975-6

Media Info

  • Features: References;
  • Pagination: 8 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00133993
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Jul 22 1976 12:00AM