|Table of Contents|

Relations of Fire Resistive Coating for Steel Structure and Cycles of Temperature and Humidity(PDF)

《建筑科学与工程学报》[ISSN:1673-2049/CN:61-1442/TU]

Issue:
2012年03期
Page:
24-30
Research Field:
Publishing date:

Info

Title:
Relations of Fire Resistive Coating for Steel Structure and Cycles of Temperature and Humidity
Author(s):
ZHANG Hu-yuan1; 2;  ZHANG Yue2;  ZHANG Xue-chao2
1. Key Laboratory of Mechanics on Disaster and Environment in Western China, Ministry of Education, Lanzhou University, Lanzhou 730000, Gansu, China; 2. School of Civil Engineering and Mechanics, Lanzhou University, Lanzhou 730000, Gansu, China
Keywords:
steel structure;  fire resistive coating;  accelerated aging;  mass loss;  cycle of temperature and humidity;  durability;  coating adhesion force
PACS:
TU545
DOI:
-
Abstract:
The accelerated aging test on a fire resistive coating(FRC)for steel structure was done to understand the effects of temperature and humidity variation on FRC physical properties and durability. In the laboratory aging test, FRC thickness and the cycles of temperature and humidity were controlled, and the phenomena including the surface aspect, color, microstructure and adhesion were observed. Test results indicate that FRC has a tendency in mass loss, thickness decrease, fracturing, darkening and yellowing in color, and pore enlargement after exposure to increase the cycles of temperature and humidity variations. The higher the FRC thickness is, the more obvious these phenomena are. Within the 40 cycles of temperature and humidity conducted, the adhesion between FRC coating and steel is found to be increased at the early cycles but decreased finally at the late cycles. After the exposure to same cycles of temperature and humidity, thinner FRC shows a higher adhesion compared to a thicker one. The final conclusion supported by the accelerated aging test is that a thin FRC possesses a better resistance and durability to weather variation.

References:

[1] 陈建领.钢结构建筑的火灾危险性和防火涂料保护浅析[J].江西化工,2005(3):49-51. CHEN Jian-ling.Discussion About the Danger of Conflagrations and Protection of Fire Resistive Coating for Steel Structure Buildings[J].Jiangxi Chemical Industry,2005(3):49-51.
[2] 程海丽.钢结构防火涂料的耐久性问题[J].新型建筑材料,2003(9):1-2. CHENG Hai-li.Durability of Fire Resistive Coating for Steel Structure[J].New Building Materials,2003(9):1-2.
[3]孙黎明.建筑钢结构的防火处理[J].中国新技术新产品,2010(2):150. SUN Li-ming.Fireproof Protection of Steel Structure[J].China New Technologies and Products,2010(2):150.
[4]SAKUMOTO Y,NAGATA J,KODAIRA A,et al.Durability Evaluation of Intumescent Coating for Steel Frames[J].Journal of Materials in Civil Engineering,2001,13(4):274-281.
[5]MISZCZYK A,DAROWICKI K.Effect of Environmental Temperature Variations on Protective Properties of Organic Coatings[J].Progress in Organic Coatings,2003,46(1):49-54.
[6]师 华,郑卫东,熊家锦,等.超薄型钢结构防火涂料在不同钢材上的防火性能研究[J].消防技术与产品信息,2003(11):16-21. SHI Hua,ZHENG Wei-dong,XIONG Jia-jin,et al.The Study of Fire Proof Characteristics of Superthin Fire Proof Coating for Steel Structure on Various Kinds of Steel[J].Fire Technique and Products Information,2003(11):16-21.
[7]PERERA D Y,OOSTERBROEK M.Hygrothermal Stress Evolution During Weathering in Organic Coatings[J].Journal of Coatings Technology,1994,66(883):83-88.
[8]NORVAISIENE R,BURLINGIS A,STANKEVICIUS V.Durability Tests on Painted Facade Rendering by Accelerated Ageing[J].Materials Science,2010,16(1):80-85.
[9]WYPYCH G.Handbook of Material Weathering[M].3rd ed.Toronto:ChemTec Publishing,2003.
[10]WYPYCH G,LEE F,POURDEYHIMI B.Instrument Selection Affects Correlation of Laboratory and Outdoor Exposures of Sealants[J].Polymeric Materials Science and Engineering,2000(83):143-144.
[11]ABRAMOFF M D,MAGELHAES P J,RAM S J.Image Processing with Image[J].Journal of Biophotonics International,2004,11(7):36-42.

Memo

Memo:
-
Last Update: 2012-09-20