Experimental observations on reinforced concrete bearing walls subjected to all-sided fire exposure

Lee, Chadon; Lee, Songhee; Kim, Hyun

doi:10.1680/macr.12.00013

Cited by 13 publications

(6 citation statements)

References 7 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In recent studies by Lee et al [21] and Ryu et al [14], the performance of reinforced concrete walls subjected to two-sided ISO 834 standard fire was investigated. Lee et al [21] and Ryu et al [14] exposed the test specimens simultaneously from two sides using a horizontal furnace and two-zone heating chamber as shown in Figure 2.4. Lee et al [21] conducted tests for a total of eight reinforced concrete walls which were 1.1 to 1.2 metres wide and 1.75 metres high.…”

Section: Previous Experimental Studiesmentioning

confidence: 99%

“…Lee et al [21] and Ryu et al [14] exposed the test specimens simultaneously from two sides using a horizontal furnace and two-zone heating chamber as shown in Figure 2.4. Lee et al [21] conducted tests for a total of eight reinforced concrete walls which were 1.1 to 1.2 metres wide and 1.75 metres high. As shown in Figure 2.4(a), the specimens were first placed on a reinforced concrete platform located in the horizontal fire furnace which was generally used for evaluating the fire resistance of horizontal construction elements.…”

Section: Previous Experimental Studiesmentioning

confidence: 99%

“…The furnace was then covered with a 360 mm thick concrete cover to maintain the furnace condition. The test configuration by Lee et al [21] allowed a constant fire exposure to flourish and expose the specimen from all sides simultaneously.…”

Section: Previous Experimental Studiesmentioning

confidence: 99%

See 2 more Smart Citations

The performance of timber-framed load-bearing gypsum plasterboard walls subjected to two-sided fire exposure

Kang¹,

Abu²,

Moss³

et al. 2021

Proceedings of the 12th Asia-Oceania Symposium on Fire Science and Technology (AOSFST 2021)

View full text Add to dashboard Cite

Gypsum plasterboard lined timber-framed walls are commonly used in construction and provide excellent fire resistance. When these walls are required to perform a load-bearing function, fire resistance is generally assessed by standard fire-resistance testing, exposing a specimen to fire from one side only. When load-bearing walls are themselves not fire separations, they can potentially be exposed to fire from both sides simultaneously. No current tests exist to reliably measure the performance of such gypsum plasterboard lined walls and there is very limited information for a recognised fire engineering design method.In this research, Abaqus/CAE finite element software is used to develop thermal and structural models for the load-bearing timber-framed gypsum plasterboard lined walls subjected to one and two-sided fire exposures and three full-scale fire-resistance tests, designed to expose the load-bearing wall specimen on both sides simultaneously, are conducted. The experimental and modelling results are then analysed to formulate design methodologies which predict the structural adequacy of the load-bearing timber-framed gypsum plasterboard lined walls exposed to fire from both sides. I would like to express my deepest gratitude to my supervisors:  Associate Professor Anthony Abu (University of Canterbury) -Your inspiration, guidance and support for the in-depth discussions have benefited me immensely in completing this research project. I would also like to express my deepest appreciation for all your support throughout the journey of completing a master's degree program.  Adjunct Associate Professor Peter Moss (University of Canterbury) -Working on this research project under your guidance was a truly invaluable and rewarding experience.  Hans Gerlich (Winstone Wallboards Ltd) -Your guidance and willingness to support in every way throughout this research project have been immeasurable and greatly appreciated. I have been very fortunate to have you as a supervisor, and am extremely grateful for your insight and advice.  Richard Hunt (Winstone Wallboards Ltd) -Your positive outlook and confidence in my research project inspired me to be more trusting and to greater accomplishments. The experimental program of this research was conducted at the fire testing laboratory of the Building Research Association of New Zealand (BRANZ). Financial support for the fireresistance testing was funded by the BRANZ Building Research Levy. I would like to thank all the staff at BRANZ, especially George Hare and Paul Chapman for sharing their experience and knowledge. A very special thanks to the fire testing lab technicians, Rik Engel, Brett Millin and Aman Kumar for their extraordinary efforts and taking the time to help with conducting the experiments. I greatly appreciate and acknowledge the sincere encouragement and support from my employer, Winstone Wallboards Ltd. I am extremely grateful to Hamish Ewan and John Jamison who have been constant and enthusiastic supporters even during the leave of absence. I want to tha...

show abstract

Section: Previous Experimental Studiesmentioning

confidence: 99%

Section: Previous Experimental Studiesmentioning

confidence: 99%

See 1 more Smart Citation

The performance of timber-framed load-bearing gypsum plasterboard walls subjected to two-sided fire exposure

Kang¹,

Abu²,

Moss³

et al. 2021

Proceedings of the 12th Asia-Oceania Symposium on Fire Science and Technology (AOSFST 2021)

View full text Add to dashboard Cite

show abstract

“…Results identified several parameters influencing the fire resistance of walls. These parameters included height-to-thickness ratio, concrete strength, reinforcement cover, eccentric load (Crozier and Sanjayan, 2000), polypropylene fibers (Tuan et al, 2013; Xiao et al, 2004), aggregate size (Ahmad et al, 2011), aggregate type (Go et al, 2012), fire exposure on all sides (Lee et al, 2013), and boundary conditions (Mueller and Kurama, 2015). Very few fire tests have been found for C-PSW/CF (Wei et al, 2017).…”

Section: Introductionmentioning

confidence: 99%

Cyclic tests on composite plate shear walls–concrete encased before and after fire exposure

Xie

Xiao

Xie

et al. 2018

Advances in Structural Engineering

View full text Add to dashboard Cite

Cyclic lateral loading tests were conducted on six composite plate shear walls–concrete encased and two conventionally reinforced concrete walls. The composite plate shear walls–concrete encased were constructed using high-performance concrete and different steel configurations with a same steel content ratio. These walls were divided into two batches. Three composite plate shear walls–concrete encased and one conventional wall were first exposed to the ISO 834 standard fire before the cyclic tests. To their comparison, the other four walls were only tested under the cyclic loading at room temperature. During the fire tests, the four walls experienced the spalling of concrete. The composite plate shear walls–concrete encased suffered more explosive spalling than the conventional wall. After the fire tests, all walls were tested under the cyclic loading. Based on the test results, analysis and discussions were made on the lateral load, lateral stiffness, and energy dissipation ability of walls. The difference was identified between the behavior of composite plate shear walls–concrete encased and that of conventional wall. Moreover, the influences of fire exposure were analyzed on seismic behavior of shear walls. Generally, the high temperatures reduce the yield, peak, and ultimate loads of walls and degrade the lateral stiffness. No significant difference can be found in energy dissipation ability between the heated and unheated walls before the drift ratio 1/120.

show abstract

“…In the experiments conducted by Crozier and Sanjayan [1], 18 concrete walls with different height-to-thickness ratios, reinforcement covers, concrete strengths, and varying levels of eccentric load were tested to figure out the influence of these variables on the performance of concrete walls exposed to a fire on one side. Lee and Lee [2], and Lee et al [3] tested another 8 concrete walls subjected to the fire exposure on all sides with different thicknesses, axial loads, and concrete compressive strengths. Results indicated that code predictions on the fire resistance for the walls are either overestimated or underestimated and need further experimental verification.…”

Section: Introductionmentioning

confidence: 99%

Fire Resistance and Post-fire Seismic Behavior of High Strength Concrete Shear Walls

Xiao

Xie

et al. 2016

Fire Technol

View full text Add to dashboard Cite

In this study, both fire tests and low-frequency cyclic loading tests after fire were conducted on three conventional high strength concrete (HSC) shear walls and a superimposed HSC shear wall with precast recycled aggregate concrete (RAC) panels. The RAC in this paper was made with recycled concrete aggregate. When specimens suffered the fire exposure on one side for 45 min, 90 min, and 135 min separately, spalling of concrete, temperature distribution and deformation of specimens were investigated as indicators of fire response. When specimens were subjected to cyclic load after fire, hysteresis curves were obtained, based on which the secant stiffness degradation and energy dissipation capacity of walls were analyzed. The results indicated that HSC would suffer severe spalling during the fire and that fire response of the superimposed wall including spalling was smaller than that of conventional walls. Using RAC panel as a thermal barrier was found to be effective to alleviate spalling, as it reduced more than 60% of spalling of HSC compared with bare walls. Based on the seismic tests results, the fire exposure deteriorated the load bearing capacity, lateral stiffness and energy dissipation capacity of walls, whereas the application of RAC panels improved the load bearing capacity by about 10% even when the superimposed wall was exposed to the fire for a long time.

show abstract

Experimental observations on reinforced concrete bearing walls subjected to all-sided fire exposure

Cited by 13 publications

References 7 publications

The performance of timber-framed load-bearing gypsum plasterboard walls subjected to two-sided fire exposure

The performance of timber-framed load-bearing gypsum plasterboard walls subjected to two-sided fire exposure

Cyclic tests on composite plate shear walls–concrete encased before and after fire exposure

Fire Resistance and Post-fire Seismic Behavior of High Strength Concrete Shear Walls

Contact Info

Product

Resources

About