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Carbon fiber and structural timber composites for engineering and construction

journal contribution
posted on 2018-09-01, 00:00 authored by Anastasia Globa, Mahbube SubhaniMahbube Subhani, Jules Moloney, Riyadh Al-AmeriRiyadh Al-Ameri
There are environmental and potential economic advantages in using laminated veneer lumber (LVL) for building structures,
but load-carrying capacity constrains uptake. Building on previous work in the field, the authors test the strategic placement of carbon
fiber–reinforced polymer (CFRP) to improve the flexural strength of timber beams, investigating both positive and negative bending
moments of structural assembly. The results demonstrate: unidirectional CFRP applied as a U-wrap on the tension side of beams improves
load carrying by 25%, stiffness by 20%, and ductility by 30%; a combination of uni- and bidirectional CFRP mesh applied to beam–column
joints with no other connectors achieves substantial structural continuity between beams. U-wrap reinforcement also shifts the mode of failure
from abrupt to gradual. Another significant observation is that wood splinters appear to cause premature failure, and we consider solutions
to this issue. Discussion of the outcomes for advancing the uptake of timber as a more sustainable structural material are undertaken,
along with an outline of further work

History

Journal

Journal of architectural engineering

Volume

24

Issue

3

Pagination

04018018-1 - 04018018-14

Publisher

American Society of Civil Engineers

Location

Reston, Va.

ISSN

1076-0431

Language

eng

Publication classification

C Journal article; C1 Refereed article in a scholarly journal

Copyright notice

2018, American Society of Civil Engineers