Alkali-Silica Reactivity in the State of Montana

Alkali-Silica Reactivity (ASR) causes cracking in concrete via reactions between alkalis contained in the Portland cement and reactive forms of silica contained in the aggregates. A gel forms on the surface of the reactive aggregates, which swells in the presence of water and induces a characteristic cracking pattern. The goals of the current research are to assess the potential for ASR in the state of Montana; establish a test procedure for identifying potential reactive aggregates; document current levels of ASR damage in the state; and explore geological characteristics that may contribute to the existence of reactive aggregates. This report contains the results of the first task of the research - conducting a literature review. It supplies background information on ASR; discusses ASR practices in federal agencies and in several states surrounding Montana; and summarizes available ASR testing methods.

Language

  • English

Media Info

  • Media Type: Digital/other
  • Edition: Task 1 Report – Literature Review
  • Features: Figures; Maps; Photos; References;
  • Pagination: 14p

Subject/Index Terms

Filing Info

  • Accession Number: 01703649
  • Record Type: Publication
  • Files: NTL, TRIS
  • Created Date: Apr 23 2019 4:28PM