MAINTENANCE METHODS FOR PREVENTING AND CORRECTING THE PUMPING ACTION OF CONCRETE PAVEMENT SLABS - MISSOURI

SLAB PUMPING, OR THE DEFLECTION OF THE PAVEMENT UNDER A MOVING LOAD, IS THE EJECTION OF WATER THROUGH THE JOINTS AND CRACKS IN CONCRETE PAVEMENTS, CARRYING SOIL PARTICLES FROM THE SUBGRADE. IT RESULTS IN VOIDS UNDER THE PAVEMENT AND FINALLY BREAKDOWN OF THE PAVEMENT ITSELF. ELIMINATION OF ONE OR MORE OF THE FOLLOWING FACTORS RESPONSIBLE FOR SLAB PUMPING WOULD EXTEND THE LIFE OF CONCRETE PAVEMENTS: (1) HEAVY AXLE LOADS; (2) JOINTS OR CRACKS IN THE PAVEMENT; (3) UNSUITABLE SUBGRADE SOIL; (4) FREE WATER UNDER THE SLAB. METHODS FOR COMBATTING THESE PROBLEMS TO PREVENT OR CORRECT PAVEMENT PUMPING ARE EXAMINED.

• Record URL:
  • https://onlinepubs.trb.org/Onlinepubs/hrbproceedings/24/24-021.pdf
• Supplemental Notes:
  • Vol 24, pp 226-227; part of Report of Committee on Mainenance of Joints in Concrete Pavements as Related to the Pumping Action of the Slabs. Distribution, posting, or copying of this PDF is strictly prohibited without written permission of the Transportation Research Board of the National Academy of Sciences. Unless otherwise indicated, all materials in this PDF are copyrighted by the National Academy of Sciences. Copyright © National Academy of Sciences. All rights reserved.
• Authors:
  • Whitton, R M
• Publication Date: 1945

Media Info

• Media Type: Digital/other
• Monograph Title: Proceedings of the Twenty-Fourth Annual Meeting of the Highway Research Board (Unassembled)
• Serial:
  • Highway Research Board Proceedings
  • Volume: 24
  • Publisher: Highway Research Board

Subject/Index Terms

• TRT Terms: Axle load force; Concrete pavements; Deflection; Free water; Joints; Loads; Maintenance; Motion; Moving industry; Pavement cracking; Pavement maintenance; Pavements; Pumping (Pavements); Slabs; Soils; Subgrade (Pavements); Water
• Old TRIS Terms: Joint; Pavement deflection
• Subject Areas: Freight Transportation; Geotechnology; Highways; Maintenance and Preservation; Pavements;

Filing Info

• Accession Number: 00218762
• Record Type: Publication
• Files: TRIS, TRB
• Created Date: Sep 13 1971 12:00AM