Skip header and navigation

4 records – page 1 of 1.

Checking in CLT Panels: An Exploratory Study

https://research.thinkwood.com/en/permalink/catalogue2625
Year of Publication
2011
Topic
Moisture
Material
CLT (Cross-Laminated Timber)
Author
Casilla, Romulo
Lum, Conroy
Pirvu, Ciprian
Wang, Brad
Organization
FPInnovations
Year of Publication
2011
Country of Publication
Canada
Format
Report
Material
CLT (Cross-Laminated Timber)
Topic
Moisture
Keywords
Panels
Testing Methods
Surface Checks
Moisture Content
Gaps
Language
English
Research Status
Complete
Summary
A study was conducted with the primary objective of gathering information for the development of a protocol for evaluating the surface quality of cross-laminated timber (CLT) products. The secondary objectives were to examine the effect of moisture content (MC) reduction on the development of surface checks and gaps, and find ways of minimizing the checking problems in CLT panels. The wood materials used for the CLT samples were rough-sawn Select grade Hem-Fir boards 25 x 152 mm (1 x 6 inches). Polyurethane was the adhesive used. The development of checks and gaps were evaluated after drying at two temperature levels at ambient relative humidity (RH). The checks and gaps, as a result of drying to 6% to 10% MC from an initial MC of 13%, occurred randomly depending upon the characteristics of the wood and the manner in which the outer laminas were laid up in the panel. Suggestions are made for minimizing checking and gap problems in CLT panels. The checks and gaps close when the panels are exposed to higher humidity. Guidelines were proposed for the development of a protocol for classifying CLT panels into appearance grades in terms of the severity of checks and gaps. The grades can be based on the estimated dimensions of the checks and gaps, their frequency, and the number of laminas in which they appear.
Online Access
Free
Resource Link
Less detail

Finite Element Modelling of Heat and Moisture Transfer through Cross Laminated Timber Panels

https://research.thinkwood.com/en/permalink/catalogue2414
Year of Publication
2019
Topic
Moisture
Fire
Material
CLT (Cross-Laminated Timber)
LSL (Laminated Strand Lumber)
Application
Wood Building Systems
Walls

Hygrothermal Properties of Cross Laminated Timber Panels

https://research.thinkwood.com/en/permalink/catalogue2307
Year of Publication
2017
Topic
Moisture
Material
CLT (Cross-Laminated Timber)
LSL (Laminated Strand Lumber)
Application
Walls
Wood Building Systems
Author
Tripathi, Jaya
Publisher
University of Maine
Year of Publication
2017
Country of Publication
United States
Format
Thesis
Material
CLT (Cross-Laminated Timber)
LSL (Laminated Strand Lumber)
Application
Walls
Wood Building Systems
Topic
Moisture
Keywords
Panels
Heat Transfer
Thermal Conductivity
Humidity
Moisture Transfer
Spruce
Language
English
Research Status
Complete
Online Access
Free
Resource Link
Less detail

Operational Performance of Cross Laminated Timber: Brock Commons Tallwood House

https://research.thinkwood.com/en/permalink/catalogue2679
Year of Publication
2020
Topic
Moisture
Serviceability
Material
CLT (Cross-Laminated Timber)
Application
Columns
Walls
Organization
UBC Sustainability Initiative
Year of Publication
2020
Country of Publication
Canada
Format
Report
Material
CLT (Cross-Laminated Timber)
Application
Columns
Walls
Topic
Moisture
Serviceability
Keywords
Moisture Content
Moisture Performance
Monitoring
Vertical Movement
Panels
Language
English
Research Status
Complete
Summary
The Tallwood House project was intended to advance the design and manufacture of mass timber products in Canada and demonstrate that mass timber is a viable structural option for mid-rise and high-rise buildings. The use of mass timber and engineered wood products in high-rise construction is becoming more common around the world leading to a growing interest in the performance of mass timber over time. This report describes the performance of the mass timber structure in Tallwood House, between September 2017 and August 2019, based on measurements of the moisture content in the prefabricated CLT floor panels and the displacement of the vertical structural system. It is intended to initiate discussions on the performance of mass timber structure elements during building occupancy and lead to further research that can explore the influential factors.
Online Access
Free
Resource Link
Less detail