An experimental investigation of the use of liquid polymers for repairing structurally damaged timber beams

Andrew Hawkins, Adelaja Israel Osofero, Marco Corradi

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Most historic buildings in Europe are constructed with timber, especially for the structural parts of floors and roofs. The advantages of the use of timber include the light weight and relatively high tensile and bending strengths, abundance of material, familiarity, workability, and economy. In this context, this paper explored the possibilities of using a liquid polymer to repair structurally damaged timber beams. Although there is a wide range of literature exploring repair methods for damaged timber beams, research on the use of liquid polymer for repairing damaged timber beams are hitherto limited. Similar experiments, with epoxy resin and other adhesives as repair materials, suggest that the use of a liquid adhesive to achieve the repair should be considered. End cut D30 European Oak beams, measuring 67 x 67 x 1100 mm, were tested to failure in four-point bending. The cracks formed were injected with the liquid polymer after which the beams were held to their original shape while the curing process takes place. After curing, the beams were subjected to a second bending test to compare the performance of the beam before and after the repair. Initial results demonstrated that the use of liquid polymers for repairing pre-cracked timber beams could be effective provided the level of damage to the beam is low.
Original languageEnglish
Title of host publicationStructural Faults & Repair 2018 and European Bridge Conference 2018
Publication statusPublished - 15 May 2018
EventStructural Faults & Repair 2018 and European Bridge Conference 2018 - Edinburgh, Edinburgh, United Kingdom
Duration: 15 May 201817 May 2018

Conference

ConferenceStructural Faults & Repair 2018 and European Bridge Conference 2018
CountryUnited Kingdom
CityEdinburgh
Period15/05/1817/05/18

Fingerprint

Timber
Repair
Liquids
Polymers
Curing
Adhesives
Bending tests
Epoxy resins
Bending strength
Roofs
Strength of materials
Tensile strength
Cracks
Experiments

Keywords

  • Timber structures
  • polymeric resins
  • mechanical properties
  • reinforcement

Cite this

Hawkins, A., Osofero, A. I., & Corradi, M. (2018). An experimental investigation of the use of liquid polymers for repairing structurally damaged timber beams. In Structural Faults & Repair 2018 and European Bridge Conference 2018

An experimental investigation of the use of liquid polymers for repairing structurally damaged timber beams. / Hawkins, Andrew; Osofero, Adelaja Israel; Corradi, Marco .

Structural Faults & Repair 2018 and European Bridge Conference 2018. 2018.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Hawkins, A, Osofero, AI & Corradi, M 2018, An experimental investigation of the use of liquid polymers for repairing structurally damaged timber beams. in Structural Faults & Repair 2018 and European Bridge Conference 2018. Structural Faults & Repair 2018 and European Bridge Conference 2018, Edinburgh, United Kingdom, 15/05/18.
Hawkins A, Osofero AI, Corradi M. An experimental investigation of the use of liquid polymers for repairing structurally damaged timber beams. In Structural Faults & Repair 2018 and European Bridge Conference 2018. 2018
Hawkins, Andrew ; Osofero, Adelaja Israel ; Corradi, Marco . / An experimental investigation of the use of liquid polymers for repairing structurally damaged timber beams. Structural Faults & Repair 2018 and European Bridge Conference 2018. 2018.
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AB - Most historic buildings in Europe are constructed with timber, especially for the structural parts of floors and roofs. The advantages of the use of timber include the light weight and relatively high tensile and bending strengths, abundance of material, familiarity, workability, and economy. In this context, this paper explored the possibilities of using a liquid polymer to repair structurally damaged timber beams. Although there is a wide range of literature exploring repair methods for damaged timber beams, research on the use of liquid polymer for repairing damaged timber beams are hitherto limited. Similar experiments, with epoxy resin and other adhesives as repair materials, suggest that the use of a liquid adhesive to achieve the repair should be considered. End cut D30 European Oak beams, measuring 67 x 67 x 1100 mm, were tested to failure in four-point bending. The cracks formed were injected with the liquid polymer after which the beams were held to their original shape while the curing process takes place. After curing, the beams were subjected to a second bending test to compare the performance of the beam before and after the repair. Initial results demonstrated that the use of liquid polymers for repairing pre-cracked timber beams could be effective provided the level of damage to the beam is low.

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