QUALITY DOCUMENTATION OF CONCRETE STRENGTH

KVALITETSDOKUMENTATION AV BETONGHAALFASTHET

The method used in Sweden at present for characterising concrete quality - the k value, i.e. Nominal cube strength in kg/cm2 - was designed for site use and is not suited to industrial production. Strength requirements become more stringent as the volume of production rises. It is proposed that the k value be replaced by a k(0.10) value, a 10% fractile calculated for a relatively long uninterrupted period of production, e.g. six months. This would cater for both large and small volumes of production and take into account fluctuations in quality. Evaluation of quality at any time can be made, and substandard concrete rejected, by using the standard deviation as a measure of quality. /TRRL/

• Corporate Authors:

  Cement and Concrete Research Institute

  Drottning Kristinas Vaeg 26
  Stockholm 70,   Sweden 
• Authors:
  • Bellander, U
• Publication Date: 1975

Language

• Swedish

Media Info

• Features: Figures;
• Pagination: 3 p.

Subject/Index Terms

• TRT Terms: Calculation; Concrete; Documents; Production; Quality control; Standard deviation; Strength of materials; Test procedures
• Uncontrolled Terms: Computation; Documentation; Quality
• Old TRIS Terms: Fluctuation; Strength requirements
• ITRD Terms: 4755: Concrete; 9063: Quality; 5544: Strength (mater); 6288: Test method
• Subject Areas: Data and Information Technology; Highways; Materials; Planning and Forecasting; I32: Concrete; I72: Traffic and Transport Planning;

Filing Info

• Accession Number: 00139041
• Record Type: Publication
• Source Agency: Swedish National Road and Transport Research Institute (VTI)
• Report/Paper Numbers: CBI 16:75
• Files: ITRD, TRIS
• Created Date: Dec 1 1976 12:00AM