Concrete Recycling
Demand for quality aggregates has increased as virgin resources have decreased—so recycled concrete aggregate (RCA) increasingly offers significant savings. RCA also supports environmentally sustainable construction, lessening not only needless use of limited landfill space but also haul distances— which, in turn, cuts fuel consumption associated with aggregate acquisition and concrete slab disposal. Ultimately, concrete recycling saves energy and reduces greenhouse gas emissions.
Though the following CP-Tech-Center-curated collection of resources is not comprehensive, it does cover both best practices and the state of the research in relation to concrete pavement recycling.
Webinar Videos
- Introduction to Recycling of Concrete Pavements (May 4, 2016)—Handout
- Environmental Considerations in Concrete Pavement Recycling (March 29, 2017)—Handout
- Construction Considerations in Concrete Pavement Recycling (April 19, 2017)—No handout available
- Case Studies in Concrete Pavement Recycling (June 21, 2017)—Handout
Guides/Manuals
Tech Briefs
Current Utilization and Guidance
Recycled Concrete Aggregate Usage in the US (2016 Benchmarking Survey of state highway agencies and paving contractors and summary of technology transfer guidance results and conclusions) (PDF)
Technical Resources
ACPA
EB043P Recycling Concrete Pavements
Construction and Demolition Recycling Association
Recycled Concrete Aggregate, A Sustainable Choice for Unbound Base (For complete paper, contact info@cdrecycling.org)
National Concrete Pavement Technology Center
A Technology Deployment Plan for the Use of Recycled Concrete Aggregates in Concrete Paving Mixtures (2011 Report) (PDF)
Supplementary Cementitious Materials and Blended Cements to Improve Sustainability of Concrete Pavements (PDF)
FHWA
Pavement Life-Cycle Assessment Framework (FHWA-HIF-16-014)
Technical Advisory T5040.37 Use of Recycled Concrete Pavement as Aggregate in Hydraulic-Cement Concrete Pavement
Towards Sustainable Pavement Systems: A Reference Document (FHWA HIF-15-002)
RMC Research & Education Foundation
Crushed Returned Concrete as Aggregates for New Concrete (Project 05-13)