PRESENT STATE OF INVESTIGATION ON DAMAGING LATE ETTRINGITE FORMATION (DLEF) IN MORTARS AND CONCRETES

For the past 25 to 30 years, preferably heat treated precast concrete members (> 70 degrees C) manufactured with high early strength Portland Cements with higher sulphate contents, under adverse exposure conditions have sometimes exhibited structural damage in the form of map cracking and loss of strength. These damages are characterized as Damaging Late Ettringite Formation (DLEF). DLEF is caused by a formation, destruction and a later renewed formation of ettringite ocurring preferably after maximum heat treatment (HT) at greater than or equal to 70 degrees C of pastes, mortars and concretes made with high strength Portland cements.

  • Corporate Authors:

    American Concrete Institute (ACI)

    38800 Country Club Drive
    Farmington Hills, MI  United States  48331
  • Authors:
    • Heinz, D
    • Kalde, M
    • Ludwig, U
    • Ruediger, I
  • Publication Date: 1999

Language

  • English

Media Info

  • Features: References;
  • Pagination: p. 1-13
  • Monograph Title: ETTRINGITE--THE SOMETIMES HOST OF DESTRUCTION

Subject/Index Terms

Filing Info

  • Accession Number: 00779853
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Dec 20 1999 12:00AM