GUIDELINES AND SPECIFICATIONS FOR THE USE OF RECLAIMED AGGREGATES IN PAVEMENT

The objective of this research study was to evaluate the performance of nine recycled concrete aggregate (RCA) design sections through both theoretical and experimental analyses. Five of these sections were 254 mm (10 in.) thick slabs of concrete pavement with varying percentages of recycled and virgin aggregates. The remaining four sections were composed of an 88.9 mm (3.5 in.) layer of hot mix asphalt (HMA) with a 12.7 mm (0.5 in.) friction wear course, over different thicknesses of RCA base material. Both types of pavements had control sections to which the test data could be compared and contrasted. For the analytical approach, the KENSLABS and KENLAYER computer programs were utilized to determine the stresses in the concrete slabs along with the tensile and compressive strains in the HMA sections. These parameters were then used to estimate the theoretical number of allowable repetitions for failure to occur in the individual sections. Part 1 of this report presents the results of the study of the use of RCA in rigid pavement. It includes a literature review, a review of the use of RCA in the United States, and laboratory test results. Part 2 presents the results of the study of the use of RCA as a base course in flexible pavement. It includes a literature review, a review of the state of concrete recycling in Florida, a look at aggregate properties important for base courses, and a review of international standards and U.S. Department of Transportation standards. Part 3 gives the results of the performance tests, and Part 4 the results of the theoretical analysis.

• Corporate Authors:

  University of Florida, Gainesville

  School of Building Construction, P.O. Box 115703
  Gainesville, FL  United States  32611

  University of Central Florida, Orlando

  Department of Civil and Environmental Engineering
  P.O. Box 162450
  Orlando, FL  United States  32816-2450

  Florida Department of Transportation

  Haydon Burns Building, 605 Suwanee Street
  Tallahassee, FL  United States  32301

  Federal Highway Administration

  1200 New Jersey Avenue, SE
  Washington, DC  United States  20590
• Authors:
  • Chini, S A
  • Kuo, S-S
  • Duxbury, J P
  • Monteiro, FMBR
  • Mbwambo, W J
• Publication Date: 1998-8

Language

• English

Media Info

• Features: Appendices; Figures; Photos; References; Tables;
• Pagination: 270 p.

Subject/Index Terms

• TRT Terms: Computer programs; Concrete aggregates; Concrete pavements; Flexible pavements; Laboratory tests; Literature reviews; Pavement base course; Performance evaluations; Recycled materials; Standards; Theoretical studies
• Geographic Terms: Florida; United States
• Subject Areas: Geotechnology; Highways; I36: Aggregates;

Filing Info

• Accession Number: 00760592
• Record Type: Publication
• Report/Paper Numbers: WPI 0510797,, Final Report
• Contract Numbers: BA509
• Files: TRIS, USDOT, STATEDOT
• Created Date: Mar 30 1999 12:00AM