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Behavior of Glulam Beams Strengthened with BFRP Bars

https://research.thinkwood.com/en/permalink/catalogue2449
Year of Publication
2019
Topic
Design and Systems
Material
Glulam (Glue-Laminated Timber)
Application
Beams
Author
Rajczyk, Marlena
Jonczyk, Damian
Publisher
IOP Publishing Ltd
Year of Publication
2019
Format
Journal Article
Material
Glulam (Glue-Laminated Timber)
Application
Beams
Topic
Design and Systems
Keywords
BFRP
Rods
Reinforcement Bars
Basalt Fiber Reinforced Polymer
Finite Element Method
Language
English
Research Status
Complete
Series
IOP Conference Series: Materials Science and Engineering
Online Access
Free
Resource Link
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Composite Elements of Basalt Fibre Rods and Low Grade Glulam

https://research.thinkwood.com/en/permalink/catalogue76
Year of Publication
2014
Topic
Design and Systems
Mechanical Properties
Material
Glulam (Glue-Laminated Timber)
Application
Beams
Author
Raftery, Gary
Kelly, Fiona
Year of Publication
2014
Country of Publication
Canada
Format
Conference Paper
Material
Glulam (Glue-Laminated Timber)
Application
Beams
Topic
Design and Systems
Mechanical Properties
Keywords
Basalt Fiber Reinforced Polymer
Flexural
Low-Grade
Modulus of Rupture
Moisture
Testing
Pull-out Performance
Language
English
Conference
World Conference on Timber Engineering
Research Status
Complete
Notes
August 10-14, 2014, Quebec City, Canada
Summary
In recent years, increased focus has been placed on the development of timber as a natural renewable construction material. However, there exists significant potential for the development of environmentally friendly engineered structural elements by comb...
Online Access
Free
Resource Link
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Development of Novel Post-Tensioned Glulam Timber Composites

https://research.thinkwood.com/en/permalink/catalogue676
Year of Publication
2014
Topic
Design and Systems
Mechanical Properties
Material
Glulam (Glue-Laminated Timber)
Author
McConnell, Emma
McPolin, Daniel
Taylor, Su
Year of Publication
2014
Country of Publication
Canada
Format
Conference Paper
Material
Glulam (Glue-Laminated Timber)
Topic
Design and Systems
Mechanical Properties
Keywords
Basalt Fiber Reinforced Polymer
Post-Tension
Four Point Bending Test
Ductile
Load Carrying Capacity
Language
English
Conference
World Conference on Timber Engineering
Research Status
Complete
Notes
August 10-14, 2014, Quebec City, Canada
Summary
Timber as a primary structural material has been forced to continually evolve to keep abreast with the changing demands of the construction industry. This paper presents further research undertaken by Queen’s University Belfast to evaluate the advantages provided by the post-tensioning of timber members using novel basalt fibre reinforced polymer (BFRP) rods. Using the high strength, low density, highly durable BFRP tendons experimental investigations utilising the four-point bending method were conducted and monitored. From the experimentation it was found that there was an increase in load carrying capacity, a more favourable ductile failure mode and a further benefit of less net deflection due to the precamber induced by the post-tensioning prior to load application.
Online Access
Free
Resource Link
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Effectiveness of Reinforcing Bent Non-Uniform Pre-Stressed Glulam Beams with Basalt Fibre Reinforced Polymers Rods

https://research.thinkwood.com/en/permalink/catalogue2464
Year of Publication
2019
Topic
Mechanical Properties
Material
Glulam (Glue-Laminated Timber)
Application
Beams
Author
Wdowiak-Postulak, Agnieszka
Brol, Janusz
Publisher
MDPI
Year of Publication
2019
Country of Publication
Switzerland
Format
Journal Article
Material
Glulam (Glue-Laminated Timber)
Application
Beams
Topic
Mechanical Properties
Keywords
Basalt Fiber Reinforced Polymer
Pre-Stressed
Bearing Capacity
Rigidity
Reinforcement
Language
English
Research Status
Complete
Series
Materials
Online Access
Free
Resource Link
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Viscoelastic Creep in Reinforced Glulam

https://research.thinkwood.com/en/permalink/catalogue1629
Year of Publication
2016
Topic
Mechanical Properties
Serviceability
Material
Glulam (Glue-Laminated Timber)
Application
Beams
Author
O’Ceallaigh, Conan
Sikora, Karol
McPolin, Daniel
Harte, Annette
Year of Publication
2016
Country of Publication
Austria
Format
Conference Paper
Material
Glulam (Glue-Laminated Timber)
Application
Beams
Topic
Mechanical Properties
Serviceability
Keywords
Long-term
Loading
Climate
Spruce
Ireland
Reinforcement
BFRP
Stiffness
Flexural Testing
Creep
Language
English
Conference
World Conference on Timber Engineering
Research Status
Complete
Notes
August 22-25, 2016, Vienna, Austria p. 2823-2831
Summary
The reinforcement of timber elements using fibre reinforced polymer (FRP) rods or plates is widely accepted as an effective method of increasing the strength and stiffness of members. The short-term behaviour of these reinforced members is relatively well understood, however, the long-term or creep behaviour of such members has received less attention. The objectives of the present work are to determine the long-term performance of reinforced timber beams under sustained loading and constant climate conditions. Timber is a viscoelastic material so its deformation response is a combination of both elastic and viscous components. This viscous creep component is defined as a deformation with time at constant stress and at constant environmental conditions. Sitka spruce is the most widely grown specie in Ireland and is the focus of this study. Glued Laminated (Glulam) beams were manufactured from Sitka spruce and a selected portion of them were reinforced with basalt-fibre reinforced polymer (BFRP) rods. The short-term flexural testing of these beams in their unreinforced and reinforced state demonstrated a significant increase in stiffness with a modest percentage reinforcement ratio. The long-term flexural testing required the design of a creep test frame to implement a constant stress of 8 MPa on the compression face of an equal proportion of unreinforced and reinforced beams. The long-term strain and deflection results for the first 52 weeks of testing are presented. The reinforcement was found to have an insignificant impact on the creep deflection but the maximum tensile creep strain was significantly reduced.
Online Access
Free
Resource Link
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