CONCRETE DURABILITY - SPECIFYING MORE SIMPLY AND SURELY BY STRENGTH

An outline is given of the recommendations of the working party investigating the proposed revision to CP110 (the structural use of concrete). Concrete strength testing is the accepted means of determining the compliance of hardened concrete with the specification. The present use of multiple specifications increases the risk of a non-complying concrete being accepted when judged against strength grades that are generally too low to satisfy other requirements for durability. Results from a nationwide survey, over a 12 month period, of ready mix design data are used to show the relationship between strength, cement content and water/cement ratio for all combinations of UK aggregates and cements. Data are given to show that this risk could be removed by specifying national durability grades. These grades are set so that only a few combinations of materials will not comply with the proposed limits of CP110 for cement content and water/cement ratio at a specified strength. Evidence is given to show that compliance with these national durability grades by means of strength tests gives an assurance that the durability requirements are also being satisfied. (TRRL)

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/00105317
• Corporate Authors:

  Cement and Concrete Association

  Wexham Spring
  Slough SL3 6PL, Buckinghamshire,   England 
• Publication Date: 1982-2

Media Info

• Features: Figures; References; Tables;
• Pagination: p. 19-21
• Serial:
  • CONCRETE
  • Volume: 16
  • Issue Number: 2
  • Publisher: THE CONCRETE SOCIETY
  • ISSN: 0010-5317

Subject/Index Terms

• TRT Terms: Acceptance tests; Aggregates; Cement; Cement content; Compliance; Concrete; Durability; Mix design; Specifications; Strength of materials; Tests; Water cement ratio
• Geographic Terms: United Kingdom
• ITRD Terms: 4577: Aggregate; 4758: Cement; 178: Compliance (specif); 4755: Concrete; 5910: Durability; 4714: Mix design; 177: Specifications; 5544: Strength (mater); 6255: Test; 8119: United Kingdom
• Subject Areas: Geotechnology; Highways; Materials; Planning and Forecasting; I32: Concrete; I72: Traffic and Transport Planning;

Filing Info

• Accession Number: 00362310
• Record Type: Publication
• Source Agency: Transport Research Laboratory
• Files: ITRD, TRIS
• Created Date: Oct 30 1982 12:00AM