RECYCLED MATERIAL FOR AGGREGATE BASE

THE MATERIAL IS SUPPLIED BY A CRUSHING PLANT ON THE PROJECT SITE WHICH CRUSHES PORTLAND CEMENT CONCRETE RUBBLE AND ASPHALT CONCRETE (AC) RUBBLE. THE RELATIVELY SIMPLE OPERATION IS ILLUSTRATED BY A DIAGRAM AND PHOTOGRAPHS. AFTER INITIAL CRUSHING, THE RUBBLE (WHICH CONSISTS OF CHUNKS OF CONCRETE AND AC FROM DEMOLISHED STRUCTURES, PARKING LOTS AND ROADS), IS SCREENED. ALL MATERIAL NOT PASSING THE LINCH SCREEN IS CARRIED OFF BY A CONVEYOR BELT TO BE RECYCLED THROUGH THE CONE CRUSHER. REMOVAL OF THE REINFORCING STEEL AND WOOD IN THE RUBBLE WAS DONE BY A DOZEN OPERATORS WHOSE EFFORTS WERE COMPLIMENTED BY 2 MEN ALONG THE BELTS. THE FINISHED PRODUCT MUST MEET SPECIFICATIONS OF EITHER CLASS 2 OR 3. TYPICAL TEST RESULTS ARE TABULATED. PROBLEMS ENCOUNTERED WITH THE SAND EQUIVALENT TEST ARE DISCUSSED. FEATURES POINTED UP IN THE COST ANALYSIS IS REPORTED. ALTHOUGH ACCURATE EQUIPMENT COSTS ARE NOT AVAILABLE, OTHER INFORMATIVE COST FACTORS ARE PRESENTED.

• Corporate Authors:

  Federal Highway Administration

  1200 New Jersey Avenue, SE
  Washington, DC  United States  20590
• Authors:
  • Cox, D O
• Publication Date: 0

Media Info

• Features: Figures; Photos;
• Pagination: p. 1-7
• Serial:
  • Highway Focus
  • Volume: 4
  • Issue Number: 3

Subject/Index Terms

• TRT Terms: Aggregates; Aggregates by source; Asphalt; Concrete; Costs; Crushing; Materials tests; Portland cement concrete; Recycling; Rubble; Specifications; Testing
• Uncontrolled Terms: Aggregate sources; Aggregate testing
• Subject Areas: Finance; Geotechnology; Highways; Materials;

Filing Info

• Accession Number: 00217286
• Record Type: Publication
• Files: TRIS, USDOT
• Created Date: Jan 11 1974 12:00AM