Repair of Timber Piles Using Ultra-High-Performance Concrete

Timber piles have been used for a long time in bridges and marine structures and many of them had exceeded their service life and in need of maintenance or repair due to deterioration. Biotic agents and mechanical degradation harm the capacity of timber piles. To address this issue repair/retrofit techniques utilizing ultra-high performance concrete (UHPC) can provide many advantages such as minimizing repair material amounts due to its superior mechanical characteristics. This paper presents preliminary tests to comprehend the behavior of composite specimens made of timber and UHPC including load transfer mechanism and load-carrying capacity. For load transfer between timber pile and UHPC, a push-off test was conducted on composite timber and UHPC specimens with different surface preparations for timber substrates. It was concluded that due to the smoothness of UHPC surface, mechanical connectors (nails) provide the highest bond strength between timber and UHPC. For the load-carrying capacity, several specimens were tested under compression loading and it was concluded that timber treatment prior to casting UHPC plays a vital role in restoring the load-carrying capacity of timber piles.

Language

  • English

Media Info

  • Media Type: Digital/other
  • Features: Figures; Photos; References; Tables;
  • Pagination: 18p

Subject/Index Terms

Filing Info

  • Accession Number: 01763634
  • Record Type: Publication
  • Report/Paper Numbers: TRBAM-21-03084
  • Files: TRIS, TRB, ATRI
  • Created Date: Dec 23 2020 11:07AM