Evaluating the use of recycled and sustainable materials in self-consolidating concrete for underground applications (UTI-UTC 13)

This research investigates the mechanical and durability properties of self-consolidating concrete (SCC) enhanced with recycled and sustainable materials for underground transportation infrastructure applications. The study focuses on incorporating recycled fibers—such as steel fibers recovered from waste tires—and supplementary cementitious materials like fly ash and slag to improve sustainability without compromising performance. Experimental efforts include laboratory-scale testing of fiber-reinforced SCC, assessments of fresh and hardened properties, and evaluations of crack propagation and shrinkage resistance. The project also explores the use of geopolymer-based and mortar-based materials in additive manufacturing processes using a large-scale 3D printer, with the aim of developing precast components for tunnel liners and support systems. Outcomes of the research contribute to the advancement of sustainable construction practices and the development of high-performance concrete solutions for underground environments.

Language

• English

Project

• Status: Completed
• Funding: $45,104.00
• Contract Numbers:

  69A3551747118

• Sponsor Organizations:

  University Transportation Center for Underground Transportation Infrastructure

  Colorado School of Mines
  Golden, CO  United States  80401

  Office of the Assistant Secretary for Research and Technology

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

  Colorado School of Mines

  1500 Illinois St
  Golden, CO  United States  80401

  California State University, Los Angeles

  5151 State University Drive
  Los Angeles, California  United States  90032
• Performing Organizations:

  California State University, Los Angeles

  5151 State University Drive
  Los Angeles, California  United States  90032
• Principal Investigators:

  Mazari , Mehran

  Rodriguez-Nikl, Tonatiuh

• Start Date: 20180401
• Expected Completion Date: 20210501
• Actual Completion Date: 20210501
• USDOT Program: University Transportation Centers

Subject/Index Terms

• TRT Terms: Crack propagation; Durability; Fiber reinforced concrete; Mechanical properties; Recycled materials; Self compacting concrete; Three dimensional printing; Tunnel lining
• Subject Areas: Bridges and other structures; Geotechnology; Highways; Materials;

Filing Info

• Accession Number: 01954494
• Record Type: Research project
• Source Agency: University Transportation Center for Underground Transportation Infrastructure
• Contract Numbers: 69A3551747118
• Files: UTC, RIP
• Created Date: May 7 2025 6:48PM