DESIGN OF PATCH REPAIRS: MEASUREMENTS OF PHYSICAL AND MECHANICAL PROPERTIES OF REPAIR SYSTEMS FOR SATISFACTORY STRUCTURAL PERFORMANCE . PROTECTION OF CONCRETE. PROCEEDINGS OF THE INTERNATIONAL CONFERENCE HELD AT THE UNIVERSITY OF DUNDEE, SEPTEMBER 11-13, 1990

Damaged reinforced concrete members are often reinstated by the application of patch repair materials. This is only successful if the cause of the original damage has been eliminated, appropriate materials are selected and these are applied in a suitable manner. As a preliminary to a wider study to investigate the structural consequences of property mismatch between patch repair materials and the substrate concrete, the relevant physical and mechanical properties of repair systems are identified and discussed. These properties include strength, modulus, coefficient of thermal expansion, tensile adhesion, Poisson's ratio, early curing shrinkage, long term creep and shrinkage. Available test methods to determine these properties were examined and several found to be deficient or to provide unrealistic results. Those found questionable have been revised or new test methods developed. Tests for the measurement of flexural strength, flexural modulus and creep in compression have been submitted to the British Standards Institution for public comment. The combination of existing standards, non-standard test methods and newly devised test procedures are discussed in the context of the measurement of the above properties for nine patch repair systems. These represent the range of generically different systems on the market and include resin mortars, polymer modified cementitious mortars and cementitious mortars. (Author/TRRL)

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  • Corporate Authors:

    E and F Spon Limited

    2-6 Boundary Road
    London,   England 
  • Authors:
    • EMBERSON, N K
    • MAYS, G C
  • Publication Date: 1990

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Filing Info

  • Accession Number: 00620039
  • Record Type: Publication
  • Source Agency: Transport Research Laboratory
  • ISBN: O-419-15490-6
  • Files: ITRD, TRIS
  • Created Date: Mar 31 1992 12:00AM