A STRUCTURAL EVALUATION METHOD FOR CONCRETE PAVEMENTS

This paper presents a structural method for evaluating concrete pavements. The method is based on the following recent developments: (1) non-destructive testing using the falling weight deflectometer (fwd); (2) multi-layer elastic analysis of pavement structures using microcomputer software; (3) the publication of TRRL research report rr87, thickness design of concrete roads (1987) (see IRRD 803973). The fwd can be used to obtain accurate data on the deflection response of any pavement under simulated vehicular loading. Deflection bowls are selected from the fwd data and analysed using a program, developed at the university of Nottingham; the program uses a multi-layer linear elastic model for the pavement layers and a nonlinear model for the unbounded material below formation level, whose stiffness is stress-dependent. Rr87 presents regression equations for concrete pavements, which are based on performance analysis. To illustrate various aspects of the new method, the paper presents the results of four case studies: (1) a dual two-lane trunk road; (2) a dual three-lane motorway; (3) another dual three-lane motorway; (4) an airport pavement. The case studies have shown the flexible way in which the method can be applied to evaluate rigid pavements. It is anticipated that the method will develop further as additional research and practical results become available. (TRRL)

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/oclc/3831968
• Corporate Authors:

  Faversham House Group

  Faversham House, 111 St James Road
  Croydon, Surrey CR9 2TH,   England 
• Authors:
  • ARMITAGE, R
• Publication Date: 1989-5

Media Info

• Pagination: p. 19-21
• Serial:
  • Highways
  • Volume: 57
  • Issue Number: 1949
  • Publisher: Alad Limited
  • ISSN: 0142-6168
  • Serial URL: http://www.highways-mag.co.uk

Subject/Index Terms

• TRT Terms: Computer programs; Concrete; Deflectographs; Durability; Elasticity (Mechanics); Mathematical analysis; Mathematical models; Measurement; Pavements; Rigid pavements; Test procedures
• ITRD Terms: 6471: Analysis (math); 4755: Concrete; 6187: Deflectograph; 5910: Durability; 5912: Elasticity; 6473: Mathematical model; 6136: Measurement; 2955: Pavement; 2964: Rigid pavement; 8645: Software; 6288: Test method
• Subject Areas: Highways; Materials; Pavements;

Filing Info

• Accession Number: 00497781
• Record Type: Publication
• Source Agency: Transport Research Laboratory
• Files: ITRD, TRIS
• Created Date: Sep 30 1990 12:00AM