Basalt FRP Spike Repairing of Wood Beams

Fibers

Antonio Borri¹  Luca Righetti²  Marco Corradi² 

[1] Department of Engineering, University of Perugia, 92 Via Duranti, Perugia 06125, Italy;Department of Mechanical and Construction Engineering, Northumbria University, Wynne-Jones Building, Newcastle upon Tyne NE1 8ST, UK;

关键词: softwood;    basalt spikes;    timber beams;    bending test;   

DOI  :  10.3390/fib3030323

来源: DOAJ

【 摘 要 】

This article describes aspects within an experimental program aimed at improving the structural performance of cracked solid fir-wood beams repaired with Basalt Fiber Reinforced Polymer (BFRP) spikes. Fir wood is characterized by its low density, low compression strength, and high level of defects, and it is likely to distort when dried and tends to fail under tension due to the presence of cracks, knots, or grain deviation. The proposed repair technique consists of the insertion of BFRP spikes into timber beams to restore the continuity of cracked sections. The experimental efforts deal with the evaluation of the bending strength and deformation properties of 24 timber beams. An artificially simulated cracking was produced by cutting the wood beams in half or notching. The obtained results for the repaired beams were compared with those of solid undamaged and damaged beams, and increases of beam capacity, bending strength and of modulus of elasticity, and analysis of failure modes was discussed. For notched beams, the application of the BFRP spikes was able to restore the original bending capacity of undamaged beams, while only a small part of the original capacity was recovered for beams that were cut in half.

【 授权许可】

Unknown