Relation of Expansion Due to Alkali Silica Reaction to the Degree of Reaction Measured by SEM Image Analysis

Scanning Electron Microscopy Image Analysis was used to quantify the degree of alkali silica reaction in affected microbars, mortar, and concrete prisms. It was found that the degree of reaction gave a unique correlation with the macroscopic expansion for 3 different aggregates, stored at 3 temperatures, with 2 levels of alkali. Relationships found for the concretes and mortars overlap when normalized by the aggregate content. This relationship seems to be linear up to a critical reaction degree, coinciding with crack initiation within the reactive aggregates.

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/00088846
• Supplemental Notes:
  • Abstract reprinted with permission from Elsevier
• Authors:
  • Haha, M Ben
  • Gallucci, E
  • Guidoum, A
  • Scrivener, K L
• Publication Date: 2007-8

Language

• English

Media Info

• Media Type: Print
• Features: Figures; References; Tables;
• Pagination: pp 1206-1214
• Serial:
  • Cement and Concrete Research
  • Volume: 37
  • Issue Number: 8
  • Publisher: Elsevier
  • ISSN: 0008-8846
  • Serial URL: http://www.sciencedirect.com/science/journal/00088846

Subject/Index Terms

• TRT Terms: Alkali aggregate reactions; Alkali silica reactions; Concrete structures; Corrosion; Cracking; Image analysis; Structural deterioration and defects
• Uncontrolled Terms: Scanning electron microscopy
• Subject Areas: Highways; Materials; I32: Concrete;

Filing Info

• Accession Number: 01076971
• Record Type: Publication
• Files: TRIS
• Created Date: Sep 27 2007 7:07AM