FORCES OF HYDRATION THAT CAN CAUSE HAVOC IN CONCRETE

Volume changes caused by hydration of water soluble salts and relatively insoluble anhydrous compounds can deteriorate concrete. This article describes the mechanisms that create the forces of deterioration and provides examples of distress caused by the phenomenon. Instances where these forces have been harnessed for useful purposes are also described. To avoid damage to concrete due to free lime and periclase, it is recommended that portland cements and hydraulic cements be used that meet maximum autoclave expansion requirements of 0.80%. Steel-making slag should not be incorporated in concrete, and concrete should not be contaminated with materials that contain free lime, periclase and potentially expansive salts. To mitigate damage due to laumontite-leonhardite, do not use aggregates that contain them.

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/oclc/4163061
• Corporate Authors:

  American Concrete Institute (ACI)

  38800 Country Club Drive
  Farmington Hills, MI  United States  48331
• Authors:
  • Erlin, B
  • Jana, D
• Publication Date: 2003-11

Language

• English

Media Info

• Features: Figures; References; Tables;
• Pagination: p. 51-57
• Serial:
  • Concrete International
  • Volume: 25
  • Issue Number: 11
  • Publisher: American Concrete Institute (ACI)
  • ISSN: 0162-4075

Subject/Index Terms

• TRT Terms: Calcium hydroxide; Chemical reactions; Concrete; Deterioration by environmental action; Distress; Expansion; Force; Hydration; Hydraulic cement; Mineral aggregates; Portland cement; Slag; Soluble salts; Volume changes
• Uncontrolled Terms: Anhydrous compounds
• Subject Areas: Highways; Materials; I32: Concrete;

Filing Info

• Accession Number: 00965996
• Record Type: Publication
• Files: TRIS
• Created Date: Nov 10 2003 12:00AM