Introducing Additional Energy Dissipation Mechanisms in Steel Fiber Reinforcement for Ultra-High Performance Concrete
Abstract
By adding annealed plain carbon steel fibers and stainless steel fibers into Ultra-High Performance Concrete (UHPC), researchers have increased UHPCs toughness through optimized thermal processing and alloy selection of steel fiber reinforcements. Currently, steel fiber reinforcements used in UHPC's are extremely brittle and have limited energy dissipation mainly through debonding due to matrix crumbling with some pullout. Implementing optimized heat treatments and selecting proper alternative alloys can drastically improve the post-yield carrying capacity of UHPC's for static and dynamic applications through plastic deformations, phase transformations, and fiber pullout. By using a phase transformable stainless steel, the ultimate flexural strength increased from 32.0 MPa to 42.5 MPa (33 percent) and decreased the post-impact or residual projectile velocity measurements an average of 31.5 m/s for 2.54-cm- and 5.08-cm-thick dynamic impact panels.
Document Details
- Document Type
- Technical Report
- Publication Date
- Mar 01, 2019
- Accession Number
- AD1069253
Entities
People
- Alexander J. Tillotson
- Brett A. Williams
- Brian H. Green
- Christopher N. Downey
- D.A. Scott
- Kirk E. Walker
- Robert D. Moser
- Sarah L. Williams
- Wendy R. Long
- Zackery B. Mcclelland
Organizations
- Engineer Research and Development Center