Use Recycled Concrete Aggregate as an Aggregate in Concrete - A Global Review and Current Status in the United States

Demolished concrete accounts for 12% to 75% of the debris from construction depending on the nature of the constructed structure. Reuse recycled concrete aggregate (RCA) in concrete can create a sustainable end use and reduce the demand for natural aggregate. In order to practically use RCA in concrete production, firstly the material must virtually meet the requirements for natural aggregate; secondly the concrete design and production procedures may need slight adjustment to meet the end product's requirement; thirdly a financial assessment is necessary with considering the local recycling operation, concrete production operation, and the model to evaluate the financial effect of processing RCA and producing RCA concrete in lieu of normal concrete. Two groups of information are presented in this paper: (i) the results from a thorough review of the practice and research on RCA concrete worldwide, and (ii) the current practices in the United States based on recent surveys to state highway agencies, construction companies, and ready-mixed concrete suppliers.

• Supplemental Notes:
  • This paper was sponsored by TRB committee ADC60 Standing Committee on Resource Conservation and Recovery. Alternate title: Use of Recycled Concrete Aggregate as an Aggregate in Concrete: A Global Review and Current Status in the United States
• Authors:
  • Wang, George
  • Hollar, Donna
  • Panthi, Kamalesh
  • Hang, Mingqi
  • Hunter, Brian
  • Peoples, Chris
• Conference:
  • Transportation Research Board 97th Annual Meeting
  • Location: Washington DC, United States
  • Date: 2018-1-7 to 2018-1-11
• Date: 2018

Language

• English

Media Info

• Media Type: Digital/other
• Features: Figures; Photos; References; Tables;
• Pagination: 14p

Subject/Index Terms

• TRT Terms: Concrete aggregates; Concrete construction; Construction industry; Demolition; Literature reviews; Natural aggregates; Portland cement concrete; Processing (Materials); Properties of materials; Recycled materials; State highway departments; State of the practice; Suppliers; Surveys; Sustainable development
• Geographic Terms: United States
• Subject Areas: Construction; Environment; Highways; Materials;

Filing Info

• Accession Number: 01664282
• Record Type: Publication
• Report/Paper Numbers: 18-00275
• Files: TRIS, TRB, ATRI
• Created Date: Mar 27 2018 11:15AM