DETERMINATION OF THE EXISTENCE AND/OR EXTENT OF ALKALI-SILICA REACTION IN MDOT STRUCTURES

Crack growth in the surface of the portland cement concrete pavement on I-95 between Gardiner and Topsham and map cracking in the substructures of several Maine bridges has increased concern about the existence and extent of alkali-silica reaction (ASR) in Maine. The objectives of this study were to: (1) Make a preliminary determination of the extent and severity of ASR in the concrete structures of Maine's highway system; (2) Determine what corrective actions, if any, may be feasible for existing structures; and (3) Suggest cost effective preventive actions for reducing ASR damage to future Maine Department of Transportation (MDOT) concrete structures. The study procedure included a review of the literature and of the ongoing work by others, a review of the experience of Central Maine Power and the New Brunswick Department of Transportation, field survey and testing for ASR in MDOT structures, laboratory testing for ASR, and attendance and participation in the FHWA-SHRP "Showcase-Workshop on Alkali-Silica Reactivity in Highway Structures" in Bordentown, New Jersey on June 13-14, 1995. This publication contains a detailed report of the study findings, conclusions, and recommendations.

  • Corporate Authors:

    University of Maine, Orono

    Department of Civil and Environmental Engineering, Boardman Hall
    Orono, ME  United States  04469-5711

    Maine Department of Transportation

    Technical Services Division, 16 State House Station
    Augusta, ME  United States  04333
  • Authors:
    • Alexander, J A
  • Publication Date: 1996-5

Language

  • English

Media Info

  • Features: Appendices; Figures; References; Tables;
  • Pagination: 82 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00725555
  • Record Type: Publication
  • Report/Paper Numbers: Technical Paper 94-3, Final Report
  • Files: TRIS, STATEDOT
  • Created Date: Sep 12 1996 12:00AM