PHYSICAL RESPONSE VARIABLES RESULTING FROM ACCELERATED AGING: EFFECTS OF AGING AND COMPARISON TO FIELD-AGED MATERIALS

The paper reports on an attempt to recreate a field concrete and then accelerate the aging of that concrete; the attempt was successful in that it produced a concrete that had similar strength and pore structure. Arrhenius aging (AA) weakened the concrete, and made it more vulnerable to freezing and thawing (FT) damage, and increased the size of the fine pores in the concrete. This indicates that a deleterious chemical reaction took place and was accelerated by the AA. FT treatment weakened the concrete and apparently compressed the smaller pores in the concrete. Porosity was largely unaffected by the aging treatments and it is likely that this is due to the stability of the pore volume and the significance of the sample size, coarse aggregate size, and material heterogeneity. The effects of aging on surface area were not detectable and, again, this is likely due to size effects and heterogeneity.

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/isbn/0923204490
• Corporate Authors:

  University of New Hampshire, Durham

  Department of Mechanical Engineering
  Durham, NH  United States  03824
• Authors:
  • Cook, R A
  • Coviello, A D
  • Korhonen, C J
  • Simon, M J
• Conference:
  • Beneficial Use of Recycled Materials in Transportation Applications
  • Location: Arlington, Virginia
  • Date: 2001-11-13 to 2001-11-15
• Publication Date: 2001

Language

• English

Media Info

• Features: Figures; References;
• Pagination: p. 493-502

Subject/Index Terms

• TRT Terms: Aging (Materials); Concrete; Concrete pavements; Cyclic strength; Freeze thaw durability; Load factor; Pore size distribution; Porosity; Surface course (Pavements)
• Uncontrolled Terms: Arrhenius aging
• Subject Areas: Construction; Highways; Pavements; I52: Construction of Pavements and Surfacings;

Filing Info

• Accession Number: 00981783
• Record Type: Publication
• ISBN: 0923204490
• Files: TRIS
• Created Date: Nov 15 2004 12:00AM