Effect of applied stresses on alkali–silica reaction-induced expansions

The mechanical effects of alkali–silica reactions (ASR) must be modeled to assess the deterioration level and the stability of ASR-damaged concrete structures. Several experimental programs have shown the effects of compressive stresses on ASR-induced strains. The effect is so significant that assessment models have to consider the modification of ASR expansions due to applied stresses and the consequences on the mechanical response of damaged structures. This paper presents and analyzes measurements performed on concrete specimens subjected to several states of stresses along the 3 directions (due to applied stresses and to passive restraint). Mechanical calculations show that volumetric expansion imposed by ASR is constant whatever the stresses conditions. They point out the “expansion transfer” occurring along the directions which are less compressed; thus, the effect of stresses on ASR expansions anisotropy can be precisely quantified.

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/00088846
• Authors:
  • Multon, Stephane
  • Toutlemonde, Francois
• Publication Date: 2006-5

Language

• English

Media Info

• Media Type: Print
• Features: Figures; Photos; References; Tables;
• Pagination: pp 912-920
• Serial:
  • Cement and Concrete Research
  • Volume: 36
  • Issue Number: 5
  • Publisher: Elsevier
  • ISSN: 0008-8846
  • Serial URL: http://www.sciencedirect.com/science/journal/00088846

Subject/Index Terms

• TRT Terms: Alkali silica reactions; Anisotropy; Bridge engineering; Concrete bridges; Concrete construction; Expansion; Structural analysis; Structural deterioration and defects
• Uncontrolled Terms: Compressive stresses
• Subject Areas: Highways; Materials; I32: Concrete;

Filing Info

• Accession Number: 01025084
• Record Type: Publication
• Files: TRIS
• Created Date: May 31 2006 9:29AM