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 Concrete Durability Mix Design Properties Of Materials Recycled Materials Sustainable Development
• 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.
  
  
• Format:
  PDF
• Funding:
  DTRT06-G-0014
• Collection(s):
  University Transportation Centers US Transportation Collection
• Main Document Checksum:
  urn:sha-512:43e6566edcffa907a0d6f1d5ac8eca0154bfdd4140085ae600a029ff82994e0055ec647851fc625ea12587137d1a6e17a2b2502a7d0c6f9e70934aa074edb2b5
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/27950/dot_27950_DS1.pdf
• File Type:
  [PDF - 12.03 MB ]