Synthesis of Information Related to Highway Practices. Topic 55-05. Use and Availability of Supplementary Cementitious Materials for Concrete

It is common practice to use supplementary cementitious materials (SCMs) in the production of concrete.  The use of SCMs as a partial replacement for cement results in more durable, higher performing concrete, lower energy consumption, and reduced green gas emissions.  The most common SCMs are industrial byproducts such as fly ash, ground granulated blast-furnace slag (slag cement), and silica fume. There are also some natural pozzolans being used in the concrete industry such as calcined shale, calcined clay, and metakaolin. There are many beneficial effects of using SCMs for both fresh and hardened concretes, including enhanced workability, reduction in bleeding, reduction in the heat of hydration, strength gain with time, and reduced permeability and improved resistance to chemical distress.  The level of improvement achieved differs among the SCMs. Although fly ash is the most commonly used SCM, others are also being used due to a shortage of fly ash.   The objective of this synthesis is to document state DOT practices for using SCMs in concrete.  

• Record URL:
  http://apps.trb.org/cmsfeed/TRBNetProjectDisplay.asp?ProjectID=5472
• Supplemental Notes:
  • Contract to a Performing Organization has not yet been awarded.

Language

• English

Project

• Status: Proposed
• Funding: $55000
• Contract Numbers:

  Project 20-05, Topic 55-05

• Sponsor Organizations:

  National Cooperative Highway Research Program

  Transportation Research Board
  500 Fifth Street, NW
  Washington, DC  United States  20001

  American Association of State Highway and Transportation Officials (AASHTO)

  444 North Capitol Street, NW
  Washington, DC  United States  20001

  Federal Highway Administration

  1200 New Jersey Avenue, SE
  Washington, DC  United States  20590
• Project Managers:

  Gause, Jo

• Start Date: 20230814
• Expected Completion Date: 0
• Actual Completion Date: 0

Subject/Index Terms

• TRT Terms: Cement; Concrete; Fly ash; Quality control; Recycled materials; Silica fume; Slag cement; State departments of transportation; State of the practice; Sustainable development; Waste products (Materials)
• Subject Areas: Environment; Highways; Materials;

Filing Info

• Accession Number: 01887171
• Record Type: Research project
• Source Agency: Transportation Research Board
• Contract Numbers: Project 20-05, Topic 55-05
• Files: TRB, RIP
• Created Date: Jul 10 2023 9:12PM