FREEZE THAW DURABILITY OF STEEL AND POLYPROPYLENE REINFORCED SHOTCRETES: A REVIEW. IN: DURABILITY OF CONCRETE. SECOND INTERNATIONAL CONFERENCE. AUGUST 4-9, 1991, MONTREAL, CANADA. VOLUME II

This paper summarizes the results of several laboratory studies in which both wet and dry-mix fiber reinforced shotcretes have been tested to ASTM C666 Procedure A (Freezing and Thawing in Water). It is shown that both steel and high volume polypropylene fiber reinforced wet-mix shotcretes can be made to be freeze-thaw durable, provided the shotcrete is properly air entrained. Non-air entrained fiber reinforced wet-mix shotcrete deteriorates very rapidly in the ASTM C666 Procedure A test. In the dry-mix shotcrete process it does not appear possible to effectively use air entraining admixtures; in spite of this, it is shown that properly designed and applied steel fiber reinforced dry-mix shotcrete can be made to be freeze-thaw durable. The important criteria for making such steel fiber reinforced dry-mix shotcretes freeze-thaw durable are discussed. It is currently not possible to practically produce high volume polypropylen fibre reinforced shotcrete using the dry-mix process and so the inherent freeze-thaw durability of such a system is not known.

Media Info

  • Features: References; Tables;
  • Pagination: p. 901-918
  • Serial:
    • Volume: II

Subject/Index Terms

Filing Info

  • Accession Number: 00616167
  • Record Type: Publication
  • Report/Paper Numbers: SP 126-48
  • Files: TRIS
  • Created Date: Oct 31 1991 12:00AM