INVESTIGATION METHODS UTILISING COMBINED NDT TECHNIQUES

This paper presents a two-stage method of approach for selecting repair methods for concrete structures suffering from various common problems. It is pointless to begin the repair process unless the deterioration processes have been identified correctly. The first stage is based on a rapid-scan visual assessment, often including limited sampling in areas of obvious damage, from which several areas can be chosen for more detailed investigation. The second stage is a detailed diagnostic survey, relying heavily on non-destructive testing (NDT) techniques. By combining at least two NDT techniques, the reliability of the information obtained can be maximised. Based on the authors' experience, guidance is given about the techniques that are most suitable for use in particular situations and in combined tests. This guidance is summarised in a table, recommending combinations of methods for various civil engineering applications, for the following materials: (1) testing concrete; (2) screeds and toppings; (3) walls and roofs; (4) buried objects; and (5) machinery. Only when the survey data have been processed is it possible to establish any variations in the behaviour of the structure on different elevations, levels, and elements. It is then possible to develop a prognosis, and plan effective repair strategies.

  • Availability:
  • Corporate Authors:

    PALLADIAN PUBLICATIONS LTD

    THE OLD FORGE
    ELSTEAD, SURREY  United Kingdom  GU8 6DD
  • Authors:
    • ROBERY, P C
    • CASSON, RBJ
  • Publication Date: 1995

Language

  • English

Media Info

  • Features: References;
  • Pagination: p. 11-6
  • Serial:
    • CONSTRUCTION REPAIR
    • Volume: 9
    • Issue Number: 6
    • Publisher: PALLADIAN PUBLICATIONS LTD
    • ISSN: 0967-0726

Subject/Index Terms

Filing Info

  • Accession Number: 00723188
  • Record Type: Publication
  • Source Agency: Transport Research Laboratory
  • Files: ITRD
  • Created Date: Jul 26 1996 12:00AM