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Cross-Laminated Timber Roof Panels at the Promega Corporation Facility: Documenting Installation and Monitoring In-Service Moisture Conditions

https://research.thinkwood.com/en/permalink/catalogue801
Year of Publication
2013
Topic
Serviceability
Moisture
Material
CLT (Cross-Laminated Timber)
Application
Wood Building Systems
Author
Glass, Samuel
Romanin, Jennifer
Schumacher, Jim
Spickler, Kris
Organization
Forest Products Laboratory
Year of Publication
2013
Country of Publication
United States
Format
Report
Material
CLT (Cross-Laminated Timber)
Application
Wood Building Systems
Topic
Serviceability
Moisture
Keywords
Moisture
Temperature
Installation Process
Sensors
Language
English
Research Status
Complete
Summary
The USDA Forest Products Laboratory (FPL) has, for the past two years, been assisting in removing technical barriers to the use of CLT and trying to develop interest in the United States for its utilization. Coincidentally, Promega Corporation, a leader ...
Online Access
Free
Resource Link
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Moisture Content Monitoring in Glulam Structures by Embedded Sensors via Electrical Methods

https://research.thinkwood.com/en/permalink/catalogue1462
Year of Publication
2018
Topic
Moisture
Serviceability
Material
Glulam (Glue-Laminated Timber)
Application
General Application
Author
Li, Hang
Perrin, Marianne
Eyma, Florent
Jacob, Xavier
Gibiat, Vincent
Publisher
Springer Berlin Heidelberg
Year of Publication
2018
Country of Publication
Germany
Format
Journal Article
Material
Glulam (Glue-Laminated Timber)
Application
General Application
Topic
Moisture
Serviceability
Keywords
Sensors
Moisture Content
Monitoring
Language
English
Research Status
Complete
Series
Wood Science and Technology
ISSN
1432-5225
Online Access
Free
Resource Link
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Moisture Uptake Testing for CLT Floor Panels in a Tall Wood Building in Vancouver

https://research.thinkwood.com/en/permalink/catalogue2343
Year of Publication
2017
Topic
Moisture
Material
CLT (Cross-Laminated Timber)
Application
Floors
Author
Lepage, Robert
Higgins, James
Finch, Graham
Year of Publication
2017
Country of Publication
Canada
Format
Conference Paper
Material
CLT (Cross-Laminated Timber)
Application
Floors
Topic
Moisture
Keywords
Water Resistance
Coatings
Hygrothermal Models
Moisture Content
Sensors
Biodegradation
Funghi
Language
English
Conference
Canadian Conference on Building Science and Technology
Research Status
Complete
Summary
Cross laminated timber (CLT) and mass timber construction is a promising structural technology that harnesses the advantageous structural properties of wood combined with renewability and carbon sequestering capacities not readily found in other major structural materials. However, as an organic material, mass timber is susceptible to biodeterioration, and when considered in conjunction with increased use of engineered wood materials, particularly in more extreme environments and exposures, it requires careful assessments to ensure long-term performance. A promising approach towards reducing construction moisture in CLT and other mass timber assemblies is to protect the surfaces with a water-resistant coating. To assess this approach, a calibrated hygrothermal model was developed with small and large scale CLT samples, instrumented with moisture content sensors at different depths, and treated with different types of water resistant coatings exposed to the Vancouver climate. The models were further validated with additional moisture content sensors installed in a mock-up floor structure of an actual CLT building under construction. Biodeterioration studies assessing fungal colonization were undertaken using the modified VTT growth method and a Dose-Response model for decay potential. The research indicates that CLT and mass timber is susceptible to dangerously high moisture contents, particularly when exposed to liquid water in horizontal applications. However, a non-porous, vapour impermeable coating, when applied on dry CLT, appears to significantly reduce the moisture load and effectively eliminate the risk of biodeterioration. This work strongly suggests that future use of CLT consider applications of a protective water-resistant coating at the manufacturing plant to resist construction moisture. The fungal study also highlights the need for a limit state design for biodeterioration to countenance variance between predicted and observed conditions.
Online Access
Free
Resource Link
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Monitoring Moisture Performance of Cross-Laminated Timber Building Elements during Construction

https://research.thinkwood.com/en/permalink/catalogue2102
Year of Publication
2019
Topic
Site Construction Management
Moisture
Material
CLT (Cross-Laminated Timber)
Glulam (Glue-Laminated Timber)
Application
Wood Building Systems

Resistance Measurements to Find High Moisture Content Inclusions Adapted for Large Timber Bridge Cross-Sections

https://research.thinkwood.com/en/permalink/catalogue2130
Year of Publication
2017
Topic
Moisture
Material
Timber (unspecified)
Application
Bridges and Spans