Properties of Pervious Concrete Incorporating Recycled Concrete Aggregate

With existing disposal sites for concrete being rapidly exhausted and good sources of virgin aggregate depleting, the implication of using recycled concrete aggregate (RCA) in our infrastructure has gained importance. Pervious concrete pavements are an environmentally conscious alternative to traditional pavements. This work investigated using recycled concrete in pervious concrete, specifically the effects on the density, strength and permeability. Cylindrical specimens of pervious concrete with different percentages of RCA and conventional aggregate were cast. The coarse aggregate was substituted by 0, 10, 20, 30, 50, and 100% RCA. As percent RCA increased both compressive strength and permeability generally decreased. The strength and hydraulic characteristics of mixes examined in this study compared generally well with other studies on porous concrete without RCA found in the literature indicating that RCA. The results indicate that up to 50% substitution of course aggregate can be used in porous concrete without compromising strength and hydraulic conductivity significantly. Further testing evaluating freeze-thaw durability is necessary if the porous concrete with RCA is to be used in cold climates.

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• Supplemental Notes:
  • This paper was sponsored by TRB committee AFN20 Properties of Concrete
• Corporate Authors:

  Transportation Research Board

  500 Fifth Street, NW
  Washington, DC  United States  20001
• Authors:
  • Berry, Bradford M
  • Suozzo, Mark J
  • Anderson, Ian A
  • Dewoolkar, Mandar M
• Conference:
  • Transportation Research Board 91st Annual Meeting
  • Location: Washington DC, United States
  • Date: 2012-1-22 to 2012-1-26
• Date: 2012

Language

• English

Media Info

• Media Type: Digital/other
• Features: Figures; References; Tables;
• Pagination: 16p
• Monograph Title: TRB 91st Annual Meeting Compendium of Papers DVD

Subject/Index Terms

• TRT Terms: Compressive strength; Concrete aggregates; Density; Laboratory tests; Permeability; Porous pavements; Properties of materials; Recycled materials
• Uncontrolled Terms: Pervious concrete; Recycled concrete aggregate
• Subject Areas: Highways; Materials; Pavements; I32: Concrete; I36: Aggregates;

Filing Info

• Accession Number: 01363873
• Record Type: Publication
• Report/Paper Numbers: 12-3994
• Files: PRP, TRIS, TRB
• Created Date: Feb 27 2012 9:37AM