Evaluation of Alternative Sources of Supplementary Cementitious Materials (SCMs) for Engineered Cementitious Composites in Transportation Infrastructure

Due to their superior ductility and mechanical strength, Engineered Cementitious Composites (ECCs) have been proposed as a promising material alternative to extend the durability and infrastructure service life. Compared with normal concrete, ECC uses more cement due to the absence of coarse aggregate in the mixture design. High cement content usually introduces higher hydration heat, autogenous shrinkage, and increased cost. Moreover, the associated increase in primary energy and emission of carbon dioxide may cause negative environmental impacts. A plausible solution would be to replace a large portion of cement in ECC with SCMs (e.g., fly ash), without sacrificing its mechanical properties, in general, and tensile ductility, in particular. As such, fly ash has become a key ingredient in the production of ECC materials. In the U.S., fly ash is the most utilized SCM in the cement and concrete industry and has become an integral part of concrete mixtures. However, the decline in coal-fired power generation is affecting its wide availability. Consequently, there is an urgent need to find alternative sources of SCMs that are high-quality, cost-effective, and readily available, which can provide a portfolio of alternatives to conventional fly ash. As a response to the expected shortage of fly ash, the objective of this project is to evaluate the much-needed alternative sources of SCMs, including unconventional sources of fly ash, to provide high-quality and cost-effective SCM alternatives for the future of ECC production in Region 6. The unconventional fly ash sources to be investigated in this study are ground bottom ash, reclaimed fly ash, ground glass, and cement kiln dust (CKD).

• Supplemental Notes:
  • 22CLSU17

Language

• English

Project

• Status: Active
• Funding: $58868
• Contract Numbers:

  69A3551747106

• Sponsor Organizations:

  Office of the Assistant Secretary for Research and Technology

  University Transportation Centers Program
  Department of Transportation
  Washington, DC  United States  20590
• Managing Organizations:

  Transportation Consortium of South-Central States (Tran-SET)

  Louisiana State University
  Baton Rouge, LA  United States  70803
• Project Managers:

  Mousa, Momen

• Performing Organizations:

  Louisiana State University, Baton Rouge

  P.O. Box 94245, Capitol Station
  Baton Rouge, LA  United States  70803
• Principal Investigators:

  Noorvand, Hassan

• Start Date: 20220401
• Expected Completion Date: 0
• Actual Completion Date: 0
• USDOT Program: University Transportation Centers Program

Subject/Index Terms

• TRT Terms: Alternatives analysis; Cement; Composite materials; Concrete; Durability; Engineered materials; Infrastructure; Mixtures; Sustainable development
• Subject Areas: Bridges and other structures; Environment; Highways; Materials; Pavements;

Filing Info

• Accession Number: 01844769
• Record Type: Research project
• Source Agency: Transportation Consortium of South-Central States (Tran-SET)
• Contract Numbers: 69A3551747106
• Files: UTC, RIP
• Created Date: May 6 2022 11:32AM