Composite repair of timber structures

D. W. Radford, D. Van Goethem, R. M. Gutkowski, M. L. Peterson

Research output: Contribution to journalArticlepeer-review

68 Scopus citations


An approach, using pultruded composites, to rejuvenate low aspect ratio timber beams, which model railroad bridge span timbers, is described. The approach focuses on overcoming the loss of shear properties by inserting fiberglass pultruded rods from the bottom to the top of the beam, through areas of damage. The concept includes the incorporation of an adhesive during the process of insertion, which not only bonds the reinforcing rods in-place, but also, fills adjacent cracks. Scale beam testing, with a variety of reinforcement cases, has been performed and the overall results are extremely positive, with test beams showing strong recovery of flexural properties and improvement in the strain to failure.

Original languageEnglish
Pages (from-to)417-425
Number of pages9
JournalConstruction and Building Materials
Issue number7
StatePublished - Oct 2002

Bibliographical note

Funding Information:
Funding for this research was provided by the United States Department of Transportation to the Mountain-Plains Consortium (MPC). The authors would also like to acknowledge the support of the Structural Engineering Laboratory and the Composite Materials, Manufacture and Structures Laboratory at Colorado State University for the use of test and measurement equipment critical to the collection and evaluation of the data presented.


  • Composite
  • Fiberglass
  • Pultruded rod
  • Shear spike
  • Timber
  • Z-Spike

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Building and Construction
  • Materials Science (all)


Dive into the research topics of 'Composite repair of timber structures'. Together they form a unique fingerprint.

Cite this