SLAB JACKING

TO ELIMINATE UNEVENNESS IN THE PROFILE OF A ROAD SURFACE DUE TO SLAB SETTLEMENT, THE FOLLOWING MEASURES CAN BE CONSIDERED: (1) REMOVING SUBSIDING AND BROKEN SLABS, REPLACING THEM BY NEW ONES AND, IF NECESSARY, REINFORCING AND LEVELLING THE BASE AND SOIL BENEATH THE SLABS; (2) OVERSLABBING THE SUBSIDING SLABS; AND (3) JACKING UP THE SUBSIDING SLABS TO THE DESIRED LEVEL. VARIOUS METHODS OF CARRYING OUT THE ABOVE MEASURES ARE DESCRIBED: MECHANICAL LIFTING, COMPRESSED AIR INJECTION TO LOOSEN THE SLABS AND INTRODUCTION OF SAND UNDER PRESSURE TO HOLD THE SLAB AT THE CORRECT LEVEL, AND PRESSURE GROUTING WITH CEMENT MORTAR OR BITUMEN. /LCPC/RRL/

• Supplemental Notes:
  • Vol 2, pp 115-118, 6 REF
• Corporate Authors:

  European Cement Association /France

  ,    
• Publication Date: 1969-7

Subject/Index Terms

• TRT Terms: Jacks (Mechanical equipment); Settlement (Structures); Slab on grade; Slabs
• Uncontrolled Terms: Jacking; Profiles
• Old TRIS Terms: Slab on ground construction
• Subject Areas: Highways; Maintenance and Preservation; Pavements;

Filing Info

• Accession Number: 00218344
• Record Type: Publication
• Source Agency: Road Research Laboratory /UK
• Files: TRIS
• Created Date: May 16 1971 12:00AM