A case study is presented of Baltimore's subway system which is faced with a major maintenance-of-way problem: deteriorating concrete ties. Concrete crossties were experiencing progressive deterioration: cracking began and progressed leading to the loss of prestressing and subsequent tie failure. The condition seems to be caused by an alkali-silica reation. A concrete tie replacement program has been initiated for the 6-mile extension where the problem surfaced. Details of the program are described including the tie inspection, the replacement ties and the stringent quality control requirements imposed on them, the engineering services, and the installing of the replacements.

  • Availability:
  • Corporate Authors:

    K-III Press, Incorporated

    424 West 33rd Street
    New York, NY  United States  10001
  • Authors:
    • Hampton, R D
  • Publication Date: 1991-1

Media Info

  • Pagination: p. 23-27
  • Serial:
    • Modern Railroads
    • Volume: 46
    • Issue Number: 1
    • Publisher: K-III Press, Incorporated
    • ISSN: 0736-2064

Subject/Index Terms

Filing Info

  • Accession Number: 00604480
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Feb 28 1991 12:00AM