RE-CAST UTC Project Information

Project Title

Performance of Synthetic Fiber-Reinforced Concrete with Adapted Rheology

Universities

Missouri University of Science and Technology

Principal Investigator

Kamal H. Khayat
Missouri University of Science and Technology

PI Contact Information

khayatk@mst.edu;  573-341-6223

Funding Source(s) and Amounts Provided (by each agency or organization)

GCP Applied Technologies $75,000
RE-CAST $40,000

Total Project Cost

$115,000

Matching Agency ID or Contract Number

GCP Applied Technologies: 00063919
RE-CAST: 00064859

RE-CAST Grant Award Number

DTRT13-G-UTC45

Start and End Dates

Start Date: September 1, 2018
End Date: December 31, 2019

Brief Description of Research Project

The main objectives of this project can be summarized as follows:

  1. Optimize the SRA-fiber system of SCC and SWC mixtures to achieve superior performance, including properties, autogenous shrinkage, restrained shrinkage, mechanical properties (tensile and compressive strength), frost durability, and transport properties. The investigation will include the Eclipse 4500 SRA, or equivalent, and two types of synthetic fibers (i.e., STRUX and SINTA from GCP).

  2. Evaluate the effect of rheological properties of fiber alignment along the casting-flow direction of structural elements. The rheological properties of concrete will be modified using a viscosity modified admixture (VMA), such as V-MAR from GCP. The incorporation of VMA can improve the stability of the concrete mixture and distribution of the fibers.

  3. Investigate the corrosion resistance of reinforcing bars in pre-cracked FR-SCC and FR-SWC mixtures. The cracking will be controlled to achieve different widths for mixtures with different fibers. The transport properties of the concrete matrix will also be investigated.

  4. Evaluate the enhancement in tensile/flexural toughness and shrinkage/crack resistance of FRC made with partially replacement of the steel reinforcement in flexural members with different types of and combinations of the STRUX and SINTA fibers.

Describe Implementation of Research Outcomes

 

Impacts/Benefits of Implementation

 

Web Links

Project website: https://recast.mst.edu/projects/performanceofsyntheticfiber-reinforcedconcrete/

Final report: PDF