Alkali-Silica Reactivity of Aggregates from Airfield Pavements and Its Correlation with Historic Field Performance

The Federal Highway Administration (FHWA) has recently introduced a new reactivity index (RI) to predict alkali–silica reaction (ASR). This novel chemical reactivity index can be used to develop two different types of screening tests to evaluate aggregates alone or job mix designs. The objective of the study presented in this paper was to explore the applicability of the new RI for ASR screening in aggregates used in the construction of airport facilities. The alkali–silica reactivity of the aggregates selected in this study varied from nonreactive to slowly reactive based on their historic field records. The ASR susceptibility of these aggregates was determined using two different testing protocols based on the RI. The first protocol, known as the Turner-Fairbank ASR susceptibility test (T-FAST), was used to determine the alkali–silica reactivity of the aggregates alone. The second protocol, also based on the RI, was applied to determine the ASR susceptibility of the job mix designs. The results of these two new ASR screening protocols were compared against those obtained using the Advisory Circular 150/5370-10H Item P-501, and ultimately with the historical field performance of the aggregates. The new RI accurately identified a slow reactive aggregate that triggered ASR deterioration in the concrete pavement and other structures in Denver International Airport (DEN) after 25 years of service life.

• Record URL:
  https://doi.org/10.1061/9780784483527.012
• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/isbn/9780784483527
• Supplemental Notes:
  • © 2021 American Society of Civil Engineers.
• Corporate Authors:

  American Society of Civil Engineers

  1801 Alexander Bell Drive
  Reston, VA  United States  20191-4400
• Authors:
  • Muñoz, Jose F
  • Balachandran, Chandni
  • Arnold, Terence S
• Conference:
  • International Airfield and Highway Pavements Conference 2021
  • Date: 2021-6-8 to 2021-6-10
• Publication Date: 2021

Language

• English

Media Info

• Pagination: pp 133 - 144
• Monograph Title: Airfield and Highway Pavements 2021: Airfield Pavement Technology

Subject/Index Terms

• TRT Terms: Aggregates; Airport runways; Alkali silica reactions; Chemical reactivity; Concrete pavements; Field tests; Mix design; Pavement performance; Testing
• Identifier Terms: Denver International Airport; U.S. Federal Highway Administration
• Subject Areas: Aviation; Highways; Materials; Pavements;

Filing Info

• Accession Number: 01777522
• Record Type: Publication
• ISBN: 9780784483527
• Files: TRIS, ASCE
• Created Date: Jul 23 2021 3:26PM