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13 records – page 1 of 2.

Adhesion Performance of Melamine-Urea-Formaldehyde Resins with Various Melamine Contents for Glued Laminated Timber by High Frequency Heating System

https://research.thinkwood.com/en/permalink/catalogue1515
Year of Publication
2016
Topic
Connections
Mechanical Properties
Material
Glulam (Glue-Laminated Timber)
Application
General Application
Author
Park, Byung-Dae
Kim, Keon-Ho
Shim, Kugbo
Hong, Min-Kug
Year of Publication
2016
Country of Publication
Austria
Format
Conference Paper
Material
Glulam (Glue-Laminated Timber)
Application
General Application
Topic
Connections
Mechanical Properties
Keywords
MUF
Adhesives
PRF
High Frequency
Korea
Delamination Test
Pine
Water Resistance
Language
English
Conference
World Conference on Timber Engineering
Research Status
Complete
Notes
August 22-25, 2016, Vienna, Austria p. 504-510
Summary
This work attempted to investigate adhesion performance of melamine-urea-formaldehyde (MUF) resin adhesives for bonding glued-laminated timber (Glulam). Two preparation methods were employed to formulate MUF resins with various melamine contents from 20 % to 50 %: one-step method of synthesizing MUF resins in a batch...
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Applicability of Various Wood Species in Glued Laminated Timber - Parameter Study on Delamination Resistance and Shear Strength

https://research.thinkwood.com/en/permalink/catalogue592
Year of Publication
2014
Topic
Mechanical Properties
Connections
Material
Glulam (Glue-Laminated Timber)
Application
General Application
Author
Jiang, Yuan
Schaffrath, Jörg
Knorz, Markus
Winter, Stefan
Van de Kuilen, Jan-Willem
Year of Publication
2014
Country of Publication
Canada
Format
Conference Paper
Material
Glulam (Glue-Laminated Timber)
Application
General Application
Topic
Mechanical Properties
Connections
Keywords
Hardwood
Softwood
Gluability
Delamination
Shear Strength
Language
English
Conference
World Conference on Timber Engineering
Research Status
Complete
Notes
August 10-14, 2014, Quebec City, Canada
Summary
In a current research project the gluability of various soft- und hardwood species and their applicability in glued laminated timber are investigated. The influence of the processing parameters on the delamination resistance and shear strength of the glu...
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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.
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Comparison of Newly Proposed Test Methods to Evaluate the Bonding Quality of Cross-Laminated Timber (CLT) Panels by Means of Experimental Data and Finite Element (FE) Analysis

https://research.thinkwood.com/en/permalink/catalogue1360
Year of Publication
2016
Topic
Mechanical Properties
Connections
Material
CLT (Cross-Laminated Timber)
Application
General Application

Composite Cross Laminated Timber (CCLT) Made with Engineered Wood Products (EWP) and Hardwood

https://research.thinkwood.com/en/permalink/catalogue1578
Year of Publication
2016
Topic
Design and Systems
Cost
Mechanical Properties
Material
CLT (Cross-Laminated Timber)
LSL (Laminated Strand Lumber)
LVL (Laminated Veneer Lumber)
Application
General Application
Author
Grandmont, Jean-Frédéric
Wang, Brad
Year of Publication
2016
Country of Publication
Austria
Format
Conference Paper
Material
CLT (Cross-Laminated Timber)
LSL (Laminated Strand Lumber)
LVL (Laminated Veneer Lumber)
Application
General Application
Topic
Design and Systems
Cost
Mechanical Properties
Keywords
Dimensional Stability
SPF
Birch
Aspen
Maple
Equilibrium Moisture Content
Delamination
Bond Line
Manufacturing
Language
English
Conference
World Conference on Timber Engineering
Research Status
Complete
Notes
August 22-25, 2016, Vienna, Austria p. 1723-1730
Summary
North American cross laminated timber is currently made of softwood lumber following the guidelines of the ANSI/APA PRG-320 manufacturing standard. In this study, the potential of manufacturing CLT panels using various hardwood species and engineered wood products (EWP) was investigated for their compatibility and the impact...
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Delamination Detection in a 90-Year-Old Glulam Block with Scanning Dry Point-Contact Ultrasound

https://research.thinkwood.com/en/permalink/catalogue114
Year of Publication
2013
Topic
Connections
Material
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...
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Feasibility of Glued Laminated Timber Beams with Tropical Hardwoods

https://research.thinkwood.com/en/permalink/catalogue118
Year of Publication
2013
Topic
Connections
Mechanical Properties
Material
Glulam (Glue-Laminated Timber)
Application
General Application
Author
Bourreau, Damien
Aimene, Yamina
Beauchêne, Jacques
Thibaut, Bernard
Publisher
Springer
Year of Publication
2013
Country of Publication
Germany
Format
Journal Article
Material
Glulam (Glue-Laminated Timber)
Application
General Application
Topic
Connections
Mechanical Properties
Keywords
Delamination
Hardwood
Phenol-Resorcinol Formaldehyde
Shear
Testing
Tropical Climate
Language
English
Research Status
Complete
Series
European Journal of Wood and Wood Products
ISSN
1436-736X
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

Influence of Micro Structured Surface on the Bond Quality of Hardwood

https://research.thinkwood.com/en/permalink/catalogue454
Year of Publication
2014
Topic
Connections
Cost
Material
Glulam (Glue-Laminated Timber)
Application
General Application
Author
Lehmann, Martin
Volkmer, Thomas
Year of Publication
2014
Country of Publication
Canada
Format
Conference Paper
Material
Glulam (Glue-Laminated Timber)
Application
General Application
Topic
Connections
Cost
Keywords
Beech
Delamination
Hardwood
Melamine Urea Formaldehyde
Production Costs
Micro-structure
Language
English
Conference
World Conference on Timber Engineering
Research Status
Complete
Notes
August 10-14, 2014, Quebec City, Canada
Summary
The state of the art requires a closed waiting time of about one hour for the beech glulam production. This has a negative influence on the production costs. Micro structured surfaces showed good performance in combination with coatings. The authors have...
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13 records – page 1 of 2.