Utilization of Fiber Reinforced High Performance Concrete (FR-HPC) in Reconstructed Bridge Decks

High-Performance Concrete (HPC) is categorized as concrete with optimal strength, shrinkage, and durability properties. Improvements are accomplished with the additions of supplementary cementitious materials (SCMs) and/or pozzolans along with various admixtures. This type of concrete mixture (HPC) is usually paired with a lower water cement ratio for low shrinkage. However, HPC in bridge decks is still prone to transverse cracking especially with vibrations due to traffic in adjacent lanes or any construction loads. To mitigate the cracking, the addition of macro fibers as well as blending of aggregates are investigated with HPC mixes. The effects of adding various types of fibers with aggregate blending on HPC were experimentally investigated in the laboratory in terms of strength and shrinkage properties as well as cracking potential which is evaluated using the ring testing in accordance with the AASHTO-T334. The results show that the addition of steel hooked or polypropylene fibers reduced the cracking area (i.e., crack width multiplied by crack length) at 56 days by 26.3% and 23.2%, respectively. Based on the laboratory study, the team implemented FR-HPC and typical HPC, alternatively, in reconstructed bridge decks in New Jersey. Three crack map surveys were performed prior to opening the bridge to traffic over a period of 290 days. Results show that FR-HPC reduced the mean crack width by 28.6%, and the cracking area by 33.3%. This study illustrated that FR-HPC is effective in improving the cracking performance of reconstructed bridge decks casted while traffic in the adjacent lane is uninterrupted.

• Supplemental Notes:
  • This paper was sponsored by TRB committee AFN10 Standing Committee on Basic Research and Emerging Technologies Related to Concrete.
• Corporate Authors:

  Transportation Research Board

  ,    
• Authors:
  • Abu-Obeidah, Adi
  • Nassif, Hani
  • Brewer, Gregory
  • Na, Chaekuk
  • Corso Jr, Frank A
• Conference:
  • Transportation Research Board 98th Annual Meeting
  • Location: Washington DC, United States
  • Date: 2019-1-13 to 2019-1-17
• Date: 2019

Language

• English

Media Info

• Media Type: Digital/other
• Features: Photos; References; Tables;
• Pagination: 6p

Subject/Index Terms

• TRT Terms: Bridge decks; Fiber reinforced materials; High performance concrete; Reconstruction
• Geographic Terms: New Jersey
• Subject Areas: Bridges and other structures; Highways; Materials; Pavements;

Filing Info

• Accession Number: 01698335
• Record Type: Publication
• Report/Paper Numbers: 19-03256
• Files: TRIS, TRB, ATRI
• Created Date: Mar 1 2019 3:51PM