A new standard has been drafted to regulate and ensure the proper use of maturity testing for determining in-place concrete strength. Maturity testing methods are based on mathematical formulas derived for calculating a maturity index. There are two methods for determining the maturity index: one employs the temperature-time factor method and the other employs equivalent age at a specified time. The draft standard regards maturity testing as an experimental and approximate method, so rigorous requirements are stipulated for the procedure's use and a considerable amount of supplemental concrete cylinder testing is imposed. Although maturity testing methods have existed for over 60 years, they have not been widely accepted because the older equipment and devices used for it were cumbersome. New equipment and software has been developed to help the maturity testing method gain more widespread use. The use of maturity methods can reduce project construction time and costs substantially. The author predicts that maturity testing will be the primary method for determining concrete strength on many projects in the future, while cylinder testing becomes only a secondary quality control measure.


  • English

Media Info

  • Features: References;
  • Pagination: p. 58-59
  • Serial:
    • Concrete International
    • Volume: 25
    • Issue Number: 9
    • Publisher: American Concrete Institute (ACI)
    • ISSN: 0162-4075

Subject/Index Terms

Filing Info

  • Accession Number: 00963336
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Sep 15 2003 12:00AM