Recycled concrete aggregate (RCA) for infrastructure elements.

Details

• Creators:
  Volz, Jeffery S. ; Khayat, Kamal H. ; Arezoumandi, Mahdi ; Drury, Jonathan ; Sadati, Seyedhamed ; Smith, Adam ; Steele, Amanda
• Corporate Creators:
  Missouri University of Science and Technology. Center for Transportation Infrastructure and Safety
• Corporate Contributors:
  United States. Department of Transportation. Research and Innovative Technology Administration
• Subject/TRT Terms:
  • Aggregates
  • Recycled materials
  • Mix design
  • Sustainable development
  • Concrete
  • Durability
  • Properties of materials
• Publication/ Report Number:
  NUTC R312;Project #00040138
• Resource Type:
  Tech Report
• Geographical Coverage:
  Missouri
• Corporate Publisher:
  Missouri University of Science and Technology. Center for Transportation Infrastructure and Safety
• Abstract:
  With a growing demand for new construction and the need to replace infrastructure stretched beyond its service life, society faces the ; problem of an ever-growing production of construction and demolition waste. The Federal Highway Administration (FHWA) ; estimates that two billion tons of new aggregate are produced each year in the United States. This demand is anticipated to increase to ; two and a half billion tons each year by 2020. With such a high demand for new aggregates, the concern arises of the depletion of ; current sources of natural aggregates and the availability of new sources. Similarly, construction waste produced in the United States ; is expected to increase. From building demolition alone, the annual production of construction waste is estimated to be 123 million ; tons (FHWA). Currently, this waste is most commonly disposed of in landfills. ; To address both the concern of increasing demand for new aggregates and increasing production of waste, many states have begun to ; recognize that a more sustainable solution exists in recycling waste concrete for use as aggregate in new concrete, or recycled concrete ; aggregate (RCA). This solution helps address the question of how to sustain modern construction demands for aggregates as well as ; helps to reduce the amount of waste that enters already over-burdened landfills. Many states have begun to implement RCA in some ; ways in new construction. For instance, forty-one states have recognized the many uses of RCA as a raw material, such as for rip-rap, ; soil stabilization, pipe bedding, and even landscape materials. Thirty-eight states have gone a step further in integrating RCA into ; roadway systems for use as aggregate course base material. However, only eleven states have begun using RCA in Portland cement ; concrete for pavement construction. Furthermore, at the start of this research project, there were no acceptable standards or guidelines ; in the U.S. for utilizing RCA in structural concrete. ; The objective of this research was to determine the implications of using RCA in the production of new concrete. Specifically, the ; study evaluated the fresh and hardened properties, durability, and structural behavior of concrete containing RCA and, based on these ; results, developed guidelines on its use in infrastructure elements for MoDOT.
  More +
• Format:
  PDF
• Funding:
  DTRT06-G-0014
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/27950/dot_27950_DS1.pdf
• File Type:
  [PDF - 12.03 MB]
• Collection(s):
  University Transportation Centers ; US Transportation Collection
• Main Document Checksum:
  urn:sha-512:43e6566edcffa907a0d6f1d5ac8eca0154bfdd4140085ae600a029ff82994e0055ec647851fc625ea12587137d1a6e17a2b2502a7d0c6f9e70934aa074edb2b5