Journal of Applied Fire Science

2006

DOI: 10.2190/af.15.1.c

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Experimental Investigation of Fire Wall Insulation During a Standard Furnace Fire Test with Different Initial Ambient Air Temperatures

Ying-Ji Chuang¹,

Hung‐Yuan Chen³

et al.

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Cited by 4 publications

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“…Nithyadharan and Kalyanaraman [10] researched on the strength of the connection of screw and calcium silicate board. Chuang et al [11] came up with the conclusion that the room temperature had a direct influence on the surface temperature when the specimen was tested for fire resistance. Maruyama et al [12] researched the aging of calcium silicate board and found that its strength weakened as time goes by.…”

Section: Introductionmentioning

confidence: 99%

The Standard Fire Testing and Numerical Modelling of the Behavior of Calcium Silicate Board Metallic‐Framework Drywall Assembly with Junction Box

¹

,

²

,

³

et al. 2018

Advances in Materials Science and Engineering

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e metallic-framework drywall is used as the specimens in this research. e standard fire test and finite element simulation were performed once on 300 cm × 300 cm area specimen and twice on 100 cm × 100 cm area specimens, to quantify and evaluate the effect of the junction boxes on the fireproof property after being embedded into the metallic-framework drywall. e results of the experiment show that the temperature of unexposed surface rises faster due to the higher thermal conductivity of the internal metal junction box. e general junction box whose material is PVC can be softened off when heated, affecting the integrity of the firewall and also leading to rapid transfer to the unexposed surface. e prediction of finite element simulation temperature is highly correlated with the results of the real experiment. It is effective to strengthen the original weaknesses by adding a calcium silicate board behind the junction box and using metal panels instead of PVC. e temperature of the temperature junction box surface which is the highest temperature point of unexposed surface decreased most significantly at 72.9°C after the reinforcement. In addition, after reinforcement, the fire resistance time can reach to 1 hour by inserting the junction box into the metallicframework drywall.

“…Nithyadharan and Kalyanaraman [10] researched on the strength of the connection of screw and calcium silicate board. Chuang et al [11] came up with the conclusion that the room temperature had a direct influence on the surface temperature when the specimen was tested for fire resistance. Maruyama et al [12] researched the aging of calcium silicate board and found that its strength weakened as time goes by.…”

Section: Introductionmentioning

confidence: 99%

The Standard Fire Testing and Numerical Modelling of the Behavior of Calcium Silicate Board Metallic‐Framework Drywall Assembly with Junction Box

¹

,

²

,

³

et al. 2018

Advances in Materials Science and Engineering

Self Cite

View full text Add to dashboard Cite

e metallic-framework drywall is used as the specimens in this research. e standard fire test and finite element simulation were performed once on 300 cm × 300 cm area specimen and twice on 100 cm × 100 cm area specimens, to quantify and evaluate the effect of the junction boxes on the fireproof property after being embedded into the metallic-framework drywall. e results of the experiment show that the temperature of unexposed surface rises faster due to the higher thermal conductivity of the internal metal junction box. e general junction box whose material is PVC can be softened off when heated, affecting the integrity of the firewall and also leading to rapid transfer to the unexposed surface. e prediction of finite element simulation temperature is highly correlated with the results of the real experiment. It is effective to strengthen the original weaknesses by adding a calcium silicate board behind the junction box and using metal panels instead of PVC. e temperature of the temperature junction box surface which is the highest temperature point of unexposed surface decreased most significantly at 72.9°C after the reinforcement. In addition, after reinforcement, the fire resistance time can reach to 1 hour by inserting the junction box into the metallicframework drywall.

Full-Scale Standard Fire Experiment and Numerical Modelling Behaviour of Non-Load Bearing Calcium Silicate Partition Drywall

¹

,

²

,

³

2018

IOP Conf. Ser.: Mater. Sci. Eng.

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The Performance of Calcium Silicate Board Partition Fireproof Drywall Assembly with Junction Box under Fire

¹

,

²

,

³

2015

Advances in Materials Science and Engineering

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This study uses a metal stud partition fireproof drywall measuring 83 mm in thickness as a test specimen to explore the impact of an embedded junction box on the firefighting performance of the wall through one time of standard fire test on a 300 cm × 300 cm area and five times of standard fire test on a 120 cm × 120 cm area. The results show that the quality of calcium silicate board plays a big role in the fireproof effectiveness. The embedded junction box located on the backside of the fire can reduce the effectiveness of the wall, especially the area above the socket. The thickness of rock wool may increase the performance, but in a limited rate. External junction box may not impact the fireproofing performance of the wall but it still possesses some safety risks. An embedded junction box measuring 101 × 55 mm could already damage the fire compartment, and in reality there may be more complicated situations that should be noted and improved.

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