CONCRETE PAVEMENT AND COMPRESSIBLE SUBGRADE SOILS COMPATIBILITY

It is commonly believed that rigid pavements cannot be built on subgrades which are still subject to vertical movements caused by settlement. There are two types of post constructional settlement : uniform settlement and differential settlement. This paper examines : (1) the effects of the differential settlement of the pavement subgrade. A distinction is made between differential settlement with a wavelength comparable to the length of the concrete slab and settlement with a broader wavelength; (2) the movements of the slab at the joints, due to subgrade deformation, which must be compatible with the type of joint. The joints must allow for the rotation of the two adjoining slabs. This may be possible if the gap between the joints is sufficiently wide; and (3) warping of the slab caused by thermal gradients. It is concluded that the construction of rigid pavements may not be absolutely ruled out but depends on the magnitude of the differential settlements occurring after construction. (TRRL)

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/isbn/0860500861
• Supplemental Notes:
  • Proceedings of the Seminar Q, Highway Construction and Maintenance, held at the PTRC Summer Annual Meeting, University of Warwick, England, July 13-16, 1981.
• Corporate Authors:

  PTRC Education and Research Services Limited

  110 Strand
  London WC2,   England 
• Authors:
  • CAROTI, L
  • Domenichini, L
  • Giannini, F
  • MARCHIONNA, A
• Conference:
  • Planning & Transport Res & Comp, Sum Ann Mtg, Proc
• Publication Date: 1981

Media Info

• Features: Figures; References;
• Pagination: p. 119-131

Subject/Index Terms

• TRT Terms: Compactibility; Compressibility; Concrete pavements; Conferences; Deformation; Differential settlement; Ground settlement; Joints; Length; Motion; Rigid pavements; Slabs; Spacing; Subgrade (Pavements); Temperature; Waves
• Uncontrolled Terms: Joint spacing
• ITRD Terms: 5905: Compressibility; 8525: Conference; 5595: Deformation; 2998: Joint (structural); 6488: Length; 5483: Movement; 2964: Rigid pavement; 5792: Settlement; 3491: Slab; 2950: Subgrade; 6722: Temperature; 6767: Wave
• Subject Areas: Design; Geotechnology; Highways; Pavements; I22: Design of Pavements, Railways and Guideways;

Filing Info

• Accession Number: 00368659
• Record Type: Publication
• Source Agency: Transport Research Laboratory
• ISBN: 086050-086-1
• Files: ITRD, TRIS
• Created Date: Dec 30 1982 12:00AM