Mitigation of Alkali-Silica Reactivity in New Mexico

Details

• Creators:
  McKeen, R. Gordon ; Lenke, Lary R. ; Pallachulla, Kiran Kumar
• Corporate Creators:
  University of New Mexico. ATR Institute
• Corporate Contributors:
  New Mexico. State Highway and Transportation Dept. ; United States. Federal Highway Administration
• Subject/TRT Terms:
  • Concrete tests
  • Alkali silica reactions
  • Admixtures
  • Research
  • Mix design
  • Fly ash
  • Lithium compounds
  • Concrete bridges
  • Alkali-silica reactivity
  • Concrete additives
  More +
• Resource Type:
  Research Paper
• Geographical Coverage:
  United States
• TRIS Online Accession Number:
  00806449
• Corporate Publisher:
  University of New Mexico
• Abstract:
  The research experiments reported were conducted at the Materials Research Center, ATR Institute, University of New Mexico, at the request of the Research Bureau, New Mexico State Highway and Transportation Department (NMSHTD). The purpose was to determine the amount of additives required for mitigation of alkali-silica reactivity (ASR) based on screening tests. Fly ash additives routinely used in New Mexico and a new material - lithium nitrate - proposed by the Strategic Highway Research Program were evaluated. The work was motivated by continuous problems with early deterioration of concrete bridges due to alkali-silica reactivity. The work was based on the use of acceptance criteria established by NMSHTD for expansion due to ASR, as measured in screening tests. Recommendations resulting from this research do not consider all aspects of the behavior of concrete mixtures and structures. The additive recommendations are based on reduction in mortar-bar expansion during accelerated tests. Figures, tables, references.
• Format:
  PDF
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/39619/dot_39619_DS1.pdf
• File Type:
  [PDF - 221.74 KB]
• Collection(s):
  US Transportation Collection
• Main Document Checksum:
  urn:sha256:7a4494b5d7a52dd1cd00b4d0c4a9940f21e00c6c635a552f7c3398caea9109b0