Ultra-High-Performance Concrete (UHPC) Use in Florida Structural Applications

In order for Ultra-High-Performance Concrete (UHPC) to be implemented in Florida structures and realize its potential benefits, research was needed to develop specifications for UHPC materials not supplied as prebagged materials. The research objective of this project was to establish mixing, placing, curing and durability requirements and test methods necessary to produce durable, non-proprietary UHPC, made using locally-sourced raw materials, for different classes of structural use and exposure conditions. This research program was performed using four different concrete mixture designs with different fiber contents and three different curing methods to investigate the range of material properties possible and their impact on strength, durability, and applicability of methods. As part of this work, a new modified double punch test was developed and is recommended for use in quality control, with direct tension testing recommended for mixture qualification. All mixtures with compressive strength above 15 ksi performed excellent in freeze-thaw testing. Steam curing was found to differentiate between good and worse performance of concrete microstructure for transport property testing. It is recommended that the UHPC fresh chloride limit be raised by 25% from 0.4 lb/yd 3 to 0.5 lb/yd 3. A modified rapid chloride migration test is recommended to be used on steam-cured samples with a chloride intrusion limit of 5 mm after 7 days. Steam curing samples gave conservative results at 28 days compared to the long-term test results and is recommended for acceptance testing purposes. A nondestructive electromagnetic sensor based on inductive principles quantify the fiber orientation in UHPC can be used in both lab and fields.

• Record URL:
  https://fdotwww.blob.core.windows.net/sitefinity/docs/default-source/research/reports/fdot-bdv31-977-105-rpt.pdf?sfvrsn=cb2e8e95_2
• 
• Summary URL:
  https://fdotwww.blob.core.windows.net/sitefinity/docs/default-source/research/reports/fdot-bdv31-977-105-sum.pdf?sfvrsn=ff876e37_2
• Summary URL:
  https://rosap.ntl.bts.gov/view/dot/68947
• Record URL:
  https://rosap.ntl.bts.gov/view/dot/68946
• Corporate Authors:

  University of Florida, Gainesville

  Department of Civil and Coastal Engineering
  Gainesville, FL  United States  32611-6580

  Florida Department of Transportation

  Research Center
  605 Suwannee Street MS-30
  Tallahassee, FL  United States  32399-0450
• Authors:
  • Riding, Kyle A
  • Ferraro, Christopher C
  • Hamilton, Trey
  • Harley, Joel
  • Alrashidi, Raid S
  • Voss, Megan
  • 0000-0003-1234-6802
  • Alabi, Daniel
• Publication Date: 2022-9

Language

• English

Media Info

• Media Type: Digital/other
• Edition: Final Report
• Features: Appendices; Figures; Photos; References; Tables;
• Pagination: 433p

Subject/Index Terms

• TRT Terms: Admixtures; Durability; Mix design; Specifications; Tensile strength; Ultra high performance concrete
• Geographic Terms: Florida
• Subject Areas: Bridges and other structures; Highways; Materials;

Filing Info

• Accession Number: 01893595
• Record Type: Publication
• Contract Numbers: BDV31-977-130, DV31-977-105
• Files: NTL, TRIS, ATRI, STATEDOT
• Created Date: Sep 19 2023 9:32AM