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14 records – page 1 of 2.

Bonding Performance of Adhesive Systems for Cross-Laminated Timber Treated with Micronized Copper Azole Type C (MCA-C)

https://research.thinkwood.com/en/permalink/catalogue2200
Year of Publication
2020
Topic
Design and Systems
Connections
Material
CLT (Cross-Laminated Timber)
Application
General Application
Author
Lim, Hyungsuk
Tripathi, Sachin
Tang, Juliet
Publisher
ScienceDirect
Year of Publication
2020
Country of Publication
Netherlands
Format
Journal Article
Material
CLT (Cross-Laminated Timber)
Application
General Application
Topic
Design and Systems
Connections
Keywords
Preservatives
Micronized Copper Azole-Type C
Bonding Performance
Delamination Tests
Block Shear Tests
Adhesives
Block Shear Strength
Wood Failure Percentage
Language
English
Research Status
Complete
Series
Construction and Building Materials
Summary
The feasibility of manufacturing cross-laminated timber (CLT) from southern yellow pine (United States grown) treated with micronized copper azole type C (MCA-C) preservative was evaluated. Lumber (2x6 visually graded no. 2 boards) was treated to two retention levels (1.0 and 2.4 kg/m3 ), planed to a thickness of 35 mm, and assembled along with an untreated control group using three adhesive systems following product specifications: melamine formaldehyde (MF), resorcinol formaldehyde (RF), and one-component polyurethane (PUR). Block shear and delamination tests were conducted to examine the bonding performance in accordance with ASTM D905 and ASTM D2559 Standards, respectively. One-way analysis of variance and Kruskal-Wallis H test were conducted to evaluate the effects of preservative retention and adhesive type on block shear strength (BSS) and wood failure percentage (WFP). Regardless of adhesive type, the 1.0 kg/m3 retention treatment significantly lowered BSS compared to the untreated control. CLT composed of the laminations treated at 2.4 kg/m3 maintained BSS when PUR and RF were used but not MF. The average WFP of each CLT configuration ranged from 89% to 99%. The untreated CLT specimens did not experience any delamination under accelerated weathering cycles. The delamination rates of the treated specimens assembled using MF and RF increased with the preservative retention level, while PUR provided delamination rates less than 1% to the laminations treated at both levels. These combined data suggest that, under the conditions tested, PUR provided overall better bonding performance than MF and RF for MCA-C treated wood.
Online Access
Free
Resource Link
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A Cradle-to-Cradle Approach to Timber Post and Beam Structures

https://research.thinkwood.com/en/permalink/catalogue1481
Year of Publication
2016
Topic
Environmental Impact
Design and Systems
Connections
Material
Glulam (Glue-Laminated Timber)
DLT (Dowel Laminated Timber)
Application
Wood Building Systems

Cross-Laminated Timber Failure Modes for Fire Conditions

https://research.thinkwood.com/en/permalink/catalogue188
Year of Publication
2015
Topic
Fire
Material
CLT (Cross-Laminated Timber)
Application
General Application
Author
Emberley, Richard
Torero, José
Year of Publication
2015
Country of Publication
Australia
Format
Conference Paper
Material
CLT (Cross-Laminated Timber)
Application
General Application
Topic
Fire
Keywords
Adhesives
Charring Rate
Delamination
Codes
Failure Modes
Language
English
Conference
International Conference on Performance-based and Life-cycle Structural Engineering
Research Status
Complete
Notes
December 9-11, 2015, Brisbane, Australia
Online Access
Free
Resource Link
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Development of Adhesive Free Engineered Wood Products - Towards Adhesive Free Timber Buildings

https://research.thinkwood.com/en/permalink/catalogue2029
Year of Publication
2018
Topic
Connections
Design and Systems
Environmental Impact
Mechanical Properties
Material
CLT (Cross-Laminated Timber)
Glulam (Glue-Laminated Timber)
Application
General Application

Effect of Adhesives and Ply Configuration on the Fire Performance of Southern Pine Cross-Laminated Timber

https://research.thinkwood.com/en/permalink/catalogue1682
Year of Publication
2016
Topic
Connections
Fire
Material
CLT (Cross-Laminated Timber)
Application
General Application
Author
Hasburgh, Laura
Bourne, Keith
Peralta, Perry
Mitchell, Phil
Schiff, Scott
Pang, Weichiang
Year of Publication
2016
Country of Publication
Austria
Format
Conference Paper
Material
CLT (Cross-Laminated Timber)
Application
General Application
Topic
Connections
Fire
Keywords
Southern Pine
Adhesives
Ply Configuration
Fire Performance
Melamine Formaldehyde
Phenol-Resorcinol Formaldehyde
Polyurethane
Emulsion Polymer Isocyanate
Delamination
Char Rate
Language
English
Conference
World Conference on Timber Engineering
Research Status
Complete
Notes
August 22-25, 2016, Vienna, Austria p. 4031-4038
Summary
Thirteen Southern pine cross-laminated timber panels were tested in the intermediate scale horizontal furnace at the Forest Products Laboratory to determine the effects different adhesives and ply configuration had on fire performance. Four different adhesives were tested...
Online Access
Free
Resource Link
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Fire Performance of Cross-Laminated Timber

https://research.thinkwood.com/en/permalink/catalogue2227
Year of Publication
2019
Topic
Fire
Material
CLT (Cross-Laminated Timber)
Application
Wood Building Systems

Fire Resistance of Unprotected CLT Floors & Walls Manufactured in the U.S.

https://research.thinkwood.com/en/permalink/catalogue2262
Topic
Fire
Material
CLT (Cross-Laminated Timber)
Application
Floors
Walls
Organization
TallWood Design Institute
Country of Publication
United States
Material
CLT (Cross-Laminated Timber)
Application
Floors
Walls
Topic
Fire
Keywords
Douglas-Fir
SPF
Connections
Adhesives
Structural Integrity
Research Status
In Progress
Notes
Contact: Lech Muszynski, Oregon State University
Summary
This project will document the flammability of Douglas-fir and spruce-pine-fir CLT panel assemblies produced in the United States. Tests are being conducted on wall and floor panel assemblies with standard overlapping connections and produced with two different types of commonly-used adhesives. Sensors placed throughout panels will provide data about how fire affects the interior and exterior of a panel. A thermal imaging camera will provide information on how the structural integrity of panels is affected by fire and fire suppression activities.
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Fire Safe Glued Massive Timber Members Adhesive Bonding Performance under Elevated Temperature -Tests Report

https://research.thinkwood.com/en/permalink/catalogue169
Year of Publication
2013
Topic
Fire
Mechanical Properties
Material
Solid-sawn Heavy Timber
Application
General Application
Author
Zhang, Chao
Yan, Huijun
Lee, George
Lam, Frank
Organization
Forestry Innovation Investment
Year of Publication
2013
Country of Publication
Canada
Format
Report
Material
Solid-sawn Heavy Timber
Application
General Application
Topic
Fire
Mechanical Properties
Keywords
Temperature
Adhesives
Bondlines
Polyurethane
Douglas-Fir
Hemlock
SPF
Phenol-Resorcinol Formaldehyde
Epoxy
Language
English
Research Status
Complete
Summary
This project was conducted to quantify the performance of adhesives bond lines under shear load subject to elevated temperature. The results add to the understanding of the performance of polyurethane adhesive bond lines under elevated temperatures to ad...
Online Access
Free
Resource Link
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Fire Safety Challenges of Tall Wood Buildings - Phase 2: Task 5 – Experimental Study of Delamination of Cross Laminated Timber (CLT) in Fire

https://research.thinkwood.com/en/permalink/catalogue1211
Year of Publication
2018
Topic
Fire
Connections
Material
CLT (Cross-Laminated Timber)
Application
General Application
Wood Building Systems

Fire Safety of Bonded Structural Timber Elements

https://research.thinkwood.com/en/permalink/catalogue1139
Year of Publication
2014
Topic
Fire
Connections
Material
Glulam (Glue-Laminated Timber)
Application
General Application
Author
Klippel, Michael
Organization
ETH Zurich
Year of Publication
2014
Country of Publication
Switzerland
Format
Thesis
Material
Glulam (Glue-Laminated Timber)
Application
General Application
Topic
Fire
Connections
Keywords
Finger-Jointed
Adhesives
Fire Resistance
Europe
Zero-Strength Layer
Language
German
Research Status
Complete
Online Access
Free
Resource Link
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14 records – page 1 of 2.