INVESTIGATION OF PRESTRESSED CONCRETE RAILWAY TIE DISTRESS

Based on petrographic, SEM, and DTA studies, damage to the ties investigated was due to delayed ettringite formation that caused microcracks radiating from localized areas of ettringite development, expansion of the paste or mortar system relative to the coarse aggregates, and macrocracks due to the internal expansion relative to the exterior surface region. Based on information available about the cement used for the majority of the ties as well as studies, the DEF was caused by the presence of large amounts of sulfate in the cement (probably in relation to the C3A content) and by the very slow solubility of much of that sulfate due to its presence in the clinker phase of the cement.

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/oclc/4163061
• Corporate Authors:

  American Concrete Institute (ACI)

  38800 Country Club Drive
  Farmington Hills, MI  United States  48331
• Authors:
  • Mielenz, R C
  • Marusin, S L
  • Hime, W G
  • Jugovic, Z T
• Publication Date: 1995-12

Language

• English

Media Info

• Features: Figures; References;
• Pagination: p. 62-68
• Serial:
  • Concrete International
  • Volume: 17
  • Issue Number: 12
  • Publisher: American Concrete Institute (ACI)
  • ISSN: 0162-4075

Subject/Index Terms

• TRT Terms: Concrete ties; Distress; Ettringite; Microcracking; Prestressed concrete ties; Sulfates
• Uncontrolled Terms: Microcracks
• Subject Areas: Highways; Materials; I32: Concrete;

Filing Info

• Accession Number: 00737656
• Record Type: Publication
• Files: TRIS, ATRI
• Created Date: Jun 18 1997 12:00AM