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7 records – page 1 of 1.

Experimental and numerical analysis on fire behaviour of loaded cross-laminated timber panels

https://research.thinkwood.com/en/permalink/catalogue2869
Year of Publication
2020
Topic
Fire
Material
CLT (Cross-Laminated Timber)
Application
Floors
Author
Wang, Yuexiang
Zhang, Jin
Mei, Fang
Liao Jiannan
Li, Weibin
Organization
Southeast University
Publisher
SAGE Journals
Year of Publication
2020
Country of Publication
China
Format
Journal Article
Material
CLT (Cross-Laminated Timber)
Application
Floors
Topic
Fire
Keywords
Charring Rate
Finite Element Model
Cohesive Elements
Fire Behavior
Language
English
Research Status
Complete
Series
Advances in Structural Engineering
Summary
Cross-laminated timber is a relatively new engineered timber material that can be used in the design and construction of modern timber buildings. A key factor that raises concerns in the wide application of cross-laminated timber is the uncertainty of its fire performance. This article describes experimental and numerical investigations on the fire behaviour of loaded cross-laminated timber panels manufactured with Canadian hemlock. A total of 10 cross-laminated timber panels with different number and thickness of layers were tested under ambient and standard fire conditions to investigate the flexural capacity at ambient temperature, and temperature distribution, charring rate, fire resistance, mid-span deflection under fire exposure. Three-dimensional finite element model was developed using the Hashin criterion and cohesive elements to predict the failure of wood and adhesive, respectively. The thermal model implicitly considers the rapidly increased temperature of inner fresh timber after the protective charred layers have fallen off. The numerical model was validated with the results obtained from experimental tests and was found to have the ability to simulate the fire behaviour of loaded cross-laminated timber panels in reasonable accuracy.
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Fire Behavior Of Next Generation Of Cross-Laminated Timber: CLT Manufactured With SCL And Hardwood

https://research.thinkwood.com/en/permalink/catalogue371
Year of Publication
2016
Topic
Fire
Material
CLT (Cross-Laminated Timber)
LVL (Laminated Veneer Lumber)
LSL (Laminated Strand Lumber)
Application
Wood Building Systems
Author
Dagenais, Christian
Grandmont, Jean-Frédéric
Hasburgh, Laura
Organization
FPInnovations
Year of Publication
2016
Country of Publication
Canada
Format
Report
Material
CLT (Cross-Laminated Timber)
LVL (Laminated Veneer Lumber)
LSL (Laminated Strand Lumber)
Application
Wood Building Systems
Topic
Fire
Keywords
Aspen
Fire Behaviour
Charring Rate
ANSI/APA PRG-320
Manufacturing Parameters
Language
English
Research Status
Complete
Summary
The objective of this study is to evaluate the fire behavior of CLT manufactured with different types of SCL or lumber boards, namely with laminated veneer lumber (LVL), laminated strand lumber (LSL) and Trembling Aspen. The fire test data is also compared to those of CLT manufactured in accordance with ANSI/APA PRG-320 using solid-sawn lumber grades. More specifically, the study aims at evaluating the charring rates of this new generation of CLT panels as well as the impact of their manufacturing parameters.
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Free
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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 Partially Protected Cross-Laminated Timber Rooms

https://research.thinkwood.com/en/permalink/catalogue322
Year of Publication
2015
Topic
Fire
Material
CLT (Cross-Laminated Timber)
Application
Floors
Walls
Author
Hevia, Alejandro
Organization
Carleton University
Year of Publication
2015
Country of Publication
Canada
Format
Thesis
Material
CLT (Cross-Laminated Timber)
Application
Floors
Walls
Topic
Fire
Keywords
Charring Rate
Fire Behaviour
Panels
Heat Transfer Model
Room Fire
Heat Release Rate
Temperature
Gypsum
Language
English
Research Status
Complete
Summary
This thesis studies the fire behaviour of Cross Laminated Timber (CLT) panels in partially protected rooms. A one-dimensional heat transfer model was developed to determine the fire resistance of CLT floor and wall panels. During this study, three room fire tests were conducted at Carleton University Fire Research Laboratory to determine the maximum percentage of unprotected CLT surface area that will yield similar results to that of a fully protected room. The rooms had a single opening and were constructed entirely using 3-ply, 105 mm thick CLT panels. A non-standard, parametric fire using furniture and clothing as fuel was used and 2 layers of gypsum board were used to cover the ceiling and the protected walls. The Heat Release Rate, temperature, charring rate and gypsum falloff time of each test was collected. The results obtained from the room test were then compared to the numerical heat transfer model to evaluate its accuracy.
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Investigation of Fire Performance of CLT Manufactured with Thin Laminates

https://research.thinkwood.com/en/permalink/catalogue309
Year of Publication
2016
Topic
Fire
Material
CLT (Cross-Laminated Timber)
Application
Floors
Walls
Author
Dagenais, Christian
Organization
FPInnovations
Year of Publication
2016
Country of Publication
Canada
Format
Report
Material
CLT (Cross-Laminated Timber)
Application
Floors
Walls
Topic
Fire
Keywords
Thin Laminations
Charring Rate
Fire Behaviour
Language
English
Research Status
Complete
Summary
Nowadays, the fire behavior of CLT panels made from solid-sawn lumber exposed to fire is well known and documented by a number of research organizations and universities. However, due to the desire to optimize how material is used in CLT, and ultimately lower manufacturing costs, CLT with thin laminations ranging from 19 to 25 mm in thickness has started to be produced in North America, which somewhat limits the applicability of some design provisions which were derived and validated from CLT made with 35-mm laminations. There is currently limited research on CLT manufactured with thin laminations, namely with respect to their fire behavior and specifically the effective charring rate. In order to address the lack of consistency in the charring models of CLT with thin laminations, FPInnovations conducted a series of fire tests to further evaluate and document the impact on the charring rate from using thin laminations. The objective of this study is to evaluate the charring behavior of CLT manufactured in accordance with ANSI/APA PRG-320 with thin laminations of various thicknesses (less than 35 mm).
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Free
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Numerical Modelling of Timber Concrete Composite Structures in Fire - Guidance Document

https://research.thinkwood.com/en/permalink/catalogue2166
Year of Publication
2018
Topic
Fire
Design and Systems
Material
Timber-Concrete Composite
Glulam (Glue-Laminated Timber)
LVL (Laminated Veneer Lumber)
Application
Wood Building Systems
Beams

Self-Extinguishment of Cross-Laminated Timber

https://research.thinkwood.com/en/permalink/catalogue328
Year of Publication
2015
Topic
Fire
Material
CLT (Cross-Laminated Timber)
Application
Wood Building Systems
Author
Crielaard, Roy
Organization
Delft University of Technology
Year of Publication
2015
Country of Publication
Netherlands
Format
Thesis
Material
CLT (Cross-Laminated Timber)
Application
Wood Building Systems
Topic
Fire
Keywords
Failure
High-Rise
Fire behaviour
Self-extinguishment
Language
English
Research Status
Complete
Summary
In this research the effect of using the combustible material CLT as the main bearing structure is investigated. As a combustible material, unprotected CLT can burn along with the fuel load present in a compartment. This master’s thesis aims to increase insight into the fire behaviour of unprotected CLT structures in a compartment burnout, conservatively assuming no active measures. The main research question of this work is: “Under what conditions is there a potential for self-extinguishment of cross-laminated timber?” A model of self-extinguishment of CLT was created which consists of various phases of a compartment burnout. Under the influence of an initial fire due to burning of room contents, the exposed CLT becomes involved in flaming combustion. Once the room contents have been largely consumed and the initial fire decays, the CLT contribution is expected to decrease as well, transforming from flaming to smouldering combustion. Finally, there will be a transition from smouldering to self-extinguishment. Two series of experiments were conducted to investigate this model and the conditions under which the transitions can take place.
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Free
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7 records – page 1 of 1.