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Author : Jifeng Yuan
Publisher :
ISBN 13 :
Total Pages : 253 pages
Book Rating : 4.:/5 (643 download)
Download or read book Intumescent coating performance on steel structures under realistic fire conditions written by Jifeng Yuan and published by . This book was released on 2009 with total page 253 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Guo-Qiang Li
Publisher : CRC Press
ISBN 13 : 1000856011
Total Pages : 195 pages
Book Rating : 4.0/5 (8 download)
Download or read book Intumescent Coating and Fire Protection of Steel Structures written by Guo-Qiang Li and published by CRC Press. This book was released on 2023-04-20 with total page 195 pages. Available in PDF, EPUB and Kindle. Book excerpt: Intumescent Coating and Fire Protection of Steel Structures establishes the thermo insulation characteristics of intumescent coating under various fire and hydrothermal aging circumstances and shows how to predict the temperature elevation of steel structures protected with intumescent coatings in fires for avoiding structural damage. Introduced are the features and applications of intumescent coatings for protecting steel structures against fire. The constant effective thermal conductivity is defined and employed to simplify the quantification for the thermo-resistance of intumescent coatings. An experimental investigation into the hydrothermal aging effects on insulative properties of intumescent coatings is presented, as well as the influence of topcoat on insulation and aging of intumescent coatings. Also described is a practical method for calculating the temperature of the protected steel structures with intumescent coatings in order to evaluate the fire safety of a structure. The book is aimed at fire and structural engineers, as well as researchers and students concerned with the protection of steel structures.
Author : Guo-Qiang Li
Publisher : CRC Press
ISBN 13 : 1000855937
Total Pages : 160 pages
Book Rating : 4.0/5 (8 download)
Download or read book Intumescent Coating and Fire Protection of Steel Structures written by Guo-Qiang Li and published by CRC Press. This book was released on 2023-04-20 with total page 160 pages. Available in PDF, EPUB and Kindle. Book excerpt: Intumescent Coating and Fire Protection of Steel Structures establishes the thermo insulation characteristics of intumescent coating under various fire and hydrothermal aging circumstances and shows how to predict the temperature elevation of steel structures protected with intumescent coatings in fires for avoiding structural damage. Introduced are the features and applications of intumescent coatings for protecting steel structures against fire. The constant effective thermal conductivity is defined and employed to simplify the quantification for the thermo-resistance of intumescent coatings. An experimental investigation into the hydrothermal aging effects on insulative properties of intumescent coatings is presented, as well as the influence of topcoat on insulation and aging of intumescent coatings. Also described is a practical method for calculating the temperature of the protected steel structures with intumescent coatings in order to evaluate the fire safety of a structure. The book is aimed at fire and structural engineers, as well as researchers and students concerned with the protection of steel structures.
Author : Renga Rao Krishnamoorthy
Publisher :
ISBN 13 :
Total Pages : 246 pages
Book Rating : 4.:/5 (86 download)
Download or read book The Analysis of Partial and Damaged Fire Protection on Structural Steel at Elevated Temperature written by Renga Rao Krishnamoorthy and published by . This book was released on 2011 with total page 246 pages. Available in PDF, EPUB and Kindle. Book excerpt: Intumescent coating fire protection on steel structures is becoming widely popular in the UK and Europe. The current assessment for the fire protection performance method using the standard fire resistance tests is not accurate, owing to the reactive behaviour of intumescent coating at elevated temperature. Moreover, the available intumescent coating temperature assessment method provided in the Eurocode for structural steel at elevated temperature does not incorporate the steel beam's behaviour and/or assessment for partial protection and/or damaged protection. The research work presented provides additional information. on the assessment of partial and/or damaged intumescent coating at elevated temperature. In the scope of the investigation on the thermal conductivity of intumescent coating, it was found that the computed average thermal conductivity was marginally sensitive to the density and emissivity at elevated temperature. However, the thermal conductivity was found to be reasonably sensitive to the differences in initial dft's (dry film thicknesses). In this research, a numerical model was developed using ABAQUS to mimic actual indicative test scenarios to predict and establish the temperature distribution and the structural fire resistance of partial and/or damaged intumescent coating at elevated temperatures. Intumescent coating actively shields when the charring process occurs when the surface temperature reaches approximately 250°C to 350°C. Maximum deflection and deflection failure times for each damage scenario were analyzed by applying specified loading conditions. It was also found that the structural fire resistance failure mode of intumescent coating on protected steel beams was particularly sensitive to the applied boundary conditions. Careful selection of nodes in the element was necessary to avoid numerical instability and unexpected numerical error during analysis. An assessment of various numerical models subjected to a-standard fire with partially protected 1 mm intumescent coating was analysed using ABAQUS. An available unprotected test result was used as a benchmark. The outcome suggests that the fire resistances of the beams were found to be sensitive to the location of the partial and/or damage protection. The overall fire resistance behaviour of intumescent coating at elevated temperature was summarized in a 'typical deflection regression' curve. An extensive parametric analysis was performed on localized intumescent coating damage with various intumescent coating thicknesses between 0.5mm to 2.0mm. It was found that the average deflection was linear for the first 30 mins of exposure for all the variables, damage locations and intumescent thicknesses. It was concluded that a thicker layered intumescent coating may not be a better insulator or be compared to a much less thick intumescent coating at elevated temperature. The use of passive fire protection, however, does enhance the overall fire resistance of the steel beam, in contrast to a naked steel structure. The research work investigated the intumescent coating behaviour with different aspects of protection and damage and the outcome of the assessment provided a robust guide and additional understanding of the performance of intumescent coating at elevated temperature.
Author : Chao Zhang
Publisher : Springer
ISBN 13 : 3662463792
Total Pages : 155 pages
Book Rating : 4.6/5 (624 download)
Download or read book Reliability of Steel Columns Protected by Intumescent Coatings Subjected to Natural Fires written by Chao Zhang and published by Springer. This book was released on 2015-02-25 with total page 155 pages. Available in PDF, EPUB and Kindle. Book excerpt: This thesis studied the effect of aging of intumescent coatings (ICs) on the reliability of protected steel columns in fire condition and developed a probabilistic approach to assess the service life of ICs applied on steel columns. In the study, Monte Carlo simulations were conducted to obtain the reliability index or failure probability of steel columns protected by ICs subjected to compartment fires. The effect of aging of intumescent coatings on the failure probability of protected steel columns was investigated by using variable insulation property of intumescent coatings in the simulation. The test data on aging effect on insulation property of intumescent coatings from literature was used. Based on the reliability analysis, a probabilistic approach is given to determine the service life of intumescent coatings for steel columns. In that approach, the failure probability of the protected steel columns is compared with the target probability of the structural fire design. The approach can also be used for probabilistic analysis of steel columns protected by conventional inert fire protection materials.
Author : Andrea Lucherini
Publisher :
ISBN 13 :
Total Pages : 0 pages
Book Rating : 4.:/5 (135 download)
Download or read book Experimental Study of the Behaviour of Steel Structures Protected by Different Intumescent Coatings and Exposed to Various Fire Scenarios written by Andrea Lucherini and published by . This book was released on 2016 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: In order to investigate the different fire properties that affect the intumescent coatings performance and their behaviour under different fire conditions, three sets of experi- ments representing different types of heating exposure were conducted for two different intumescent coating - the water-based PaintA and the solvent-based PaintB. In the first set of experiments, in an electric oven, steel samples were exposed to several non- standard fire curves with heating rates lower than the ISO834 fire curve. The steel specimens were IPE400 steel profile sections protected by 1.00 mm dry film thickness (DFT) of intumescent coating. The same samples were used also in the second set of experiments, where the steel specimens were exposed to the ISO834 cellulosic standard fire curve in a gas furnace. In the third set of experiments, steel plate samples pro- tected by 3 different intumescent paint DFTs (0.50, 1.00, 1.50 mm) were tested in a mass loss cone. The steel specimens were exposed to different heat fluxes, which pro- vided temperature-time curves with heating rates similar to the ISO834 standard fire curve. In all the sets of experiments, the intumescent coating behaviour was assessed by means a qualitative analysis based on visual inspection: colour, compactness, cracks, expansion, density, flammability and smoke production. Moreover, the intumescent coating performance was quantitatively assessed according to two different parameters: the thermal resistance based on the Eurocode formula for insulated steel sections and an efficiency parameter, defined as the difference between the absolute temperature of the unprotected and protected steel divided by the absolute temperature of the unprotected steel. The results underlined that many intumescent coatings characteristics, such as the paint expansion and the smoke production, are strongly dependent on the fire proper- ties. However, other aspects like the paint activation temperature are intrinsic charac- teristics and they are independent of the fire conditions. Nevertheless, many differences were highlighted on the behaviour of the two different intumescent coatings under various fire exposures. The thermal resistance developments had a similar trend, but their performances were strongly dependent on the heating rate. In particular, it was found that PaintA works better in terms of thermal resistance than PaintB. Moreover, the performance of the solvent-based PaintA improved with an increasing heating rate, while the performance of the water-based PaintB decreased with increasing heating rate. Similarly, different efficiencies of the two paints were also registered: this discrepancy was more pronounced at low heat fluxes and for thinner paint coatings. Furthermore, the intumescent paint efficiency improved with higher dry film thicknesses, but the intumescent coatings were not very sensible to their applied thicknesses and the performances with different DFTs were comparable. In addition, it was found that also the nature of the fire condition influenced the intumescent coatings behaviour with similar temperatures and heating rates. The study confirmed that the current procedure for the design of intumescent coat- ings has certain limitations, as different paints have different performances according to their compositions and their performance is also a function of the fire scenarios. In particular, the water-based paint had better performances at high heating rates, while the solvent-based paint had better performances at slow heating rates. Therefore, the intumescent coatings design should be assessed according to a wider range of fire scenarios with different properties, e.g. heating rate. In fact, in the case of solvent-based paints, the design according to the standard fire exposure generates to an overestimation of the intumescent coating performance for slow fires. This leads to a mistaken design on the unsafe side.
Author : Yong Wang
Publisher : CRC Press
ISBN 13 : 041555733X
Total Pages : 397 pages
Book Rating : 4.4/5 (155 download)
Download or read book Performance-Based Fire Engineering of Structures written by Yong Wang and published by CRC Press. This book was released on 2012-06-22 with total page 397 pages. Available in PDF, EPUB and Kindle. Book excerpt: Major events—notably the Broadgate fire in London, New York’s World Trade Center collapse, and the Windsor Tower fire in Madrid—as well as the enlightening studies at the Cardington fire research project have given international prominence to performance-based structural fire engineering. As a result, structural fire engineering has increasingly attracted the interest not only of fire and structural engineers but also of researchers and students. And studies in recent years have generated a vast number of findings. Performance-Based Fire Engineering of Structures summarizes the latest knowledge on performance-based approaches to structural fire engineering, enabling readers to critically assess research in the field. Whereas most recent books have been mainly concerned with dissemination of principles encapsulated in established codes of practice such as the Eurocodes, this work addresses in depth: Global structural behaviour and modelling Progressive collapse of structures in fire and the importance of connection robustness The integrity of compartmentation in fire Structural fire engineering under realistic fire conditions and its implications for material properties The limitations of research results and design methods The unexploited potential for advanced fire engineering design This authoritative book draws on the work of internationally active researchers who were core members of the European Network project’s COST C26 working group on fire resistance. It helps readers develop a thorough understanding of how to use advanced fire engineering design to improve structural safety and reduce construction costs.
Author : Venkatesh Kodur
Publisher : DEStech Publications, Inc
ISBN 13 : 1605950270
Total Pages : 1047 pages
Book Rating : 4.6/5 (59 download)
Download or read book Structures in Fire written by Venkatesh Kodur and published by DEStech Publications, Inc. This book was released on 2010 with total page 1047 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : G. Q. Li
Publisher :
ISBN 13 : 9781032263571
Total Pages : 0 pages
Book Rating : 4.2/5 (635 download)
Download or read book Intumescent Coating and Fire Protection of Steel Structures written by G. Q. Li and published by . This book was released on 2023 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: "Intumescent coating insulates structural steel from fire damage. This book for fire and structural engineers shows how to predict the temperature elevation of steel structures in fire, how the state and thickness of the porous char formed change, and how the coating's organic ingredients age as its components are dissolved by moisture in the air and affect the design life of the structure. The constant effective thermal conductivity is defined. Hydrothermal aging, along with the influence of topcoat on insulation and aging, are presented, with a practical method for calculating the temperature of the protected steel structures and the fire safety of a structure"--
Author : Jiyuan Kang
Publisher :
ISBN 13 :
Total Pages : 122 pages
Book Rating : 4.:/5 (114 download)
Download or read book Morphology and Performance Characterization of Intumescent Coatings for Fire Protection of Structural Steel written by Jiyuan Kang and published by . This book was released on 2019 with total page 122 pages. Available in PDF, EPUB and Kindle. Book excerpt: Intumescent coating is becoming popular in building constructions as a passive fire protection product. It expands and forms a porous thermal protective char layer when exposed to a fire and can effectively protect building steel structures from high temperature. A large number of studies about intumescent coatings have been conducted, particularly in the following fields: (1) chemical formulation, which focuses on the choices of ingredients; i.e., a carbon source, an acid source and a blowing agent, to form a proper combination; and (2) numerical models, which aim to simulate the chemical-reaction and heat-transfer processes during the fire protection period. To develop a new formulation and additives or to validate the numerical models, the characterization of the char formation is of essential importance. However, a universal characterization method has not yet been fully developed for diagnosing the internal char-forming processes, the morphological structure of the char formed, and the real-time interior thermal properties during the fire protection period. This deficiency stems mainly from technical difficulties in obtaining structure character from the expanded char without damage and measuring a precise heat transfer history from a high temperature (up to 600 °C ) shape changing porous media.In this study, a laboratory-scale mass-loss cone heating device is used to impose three incident radiant heat fluxes (25, 50, and 75 kW/m2) on different types of intumescent coatings (water-based and epoxy-based). The morphological characteristics of the expanded and charred intumescent coatings have been studied using a computer tomography (CT)-based analysis method. Image processing techniques are applied to the CT-scanned data to generate 3D reconstructed images and to measure structure properties using ImageJ software. Thermal insulating performance (apparent thermal conductivity and heat blocking efficiency) of the expanding char layer is determined in situ based on real-time measurements of the temperature distribution in the char layer and the heat flux transmitted through the char layer. The Dynamic Plane Source (DPS) method is also employed to measure the thermal conductivity of the post-exposure char as a verification method of the in-situ measurements.The present structure and thermal characterization method is useful to assist in new formulation developments and to advance numerical modeling.
Author : Andrew H. Buchanan
Publisher : John Wiley & Sons
ISBN 13 : 0470972890
Total Pages : 437 pages
Book Rating : 4.4/5 (79 download)
Download or read book Structural Design for Fire Safety written by Andrew H. Buchanan and published by John Wiley & Sons. This book was released on 2017-01-30 with total page 437 pages. Available in PDF, EPUB and Kindle. Book excerpt: Structural Design for Fire Safety, 2nd edition Andrew H. Buchanan, University of Canterbury, New Zealand Anthony K. Abu, University of Canterbury, New Zealand A practical and informative guide to structural fire engineering This book presents a comprehensive overview of structural fire engineering. An update on the first edition, the book describes new developments in the past ten years, including advanced calculation methods and computer programs. Further additions include: calculation methods for membrane action in floor slabs exposed to fires; a chapter on composite steel-concrete construction; and case studies of structural collapses. The book begins with an introduction to fire safety in buildings, from fire growth and development to the devastating effects of severe fires on large building structures. Methods of calculating fire severity and fire resistance are then described in detail, together with both simple and advanced methods for assessing and designing for structural fire safety in buildings constructed from structural steel, reinforced concrete, or structural timber. Structural Design for Fire Safety, 2nd edition bridges the information gap between fire safety engineers, structural engineers and building officials, and it will be useful for many others including architects, code writers, building designers, and firefighters. Key features: • Updated references to current research, as well as new end-of-chapter questions and worked examples. •Authors experienced in teaching, researching, and applying structural fire engineering in real buildings. • A focus on basic principles rather than specific building code requirements, for an international audience. An essential guide for structural engineers who wish to improve their understanding of buildings exposed to severe fires and an ideal textbook for introductory or advanced courses in structural fire engineering.
Author : Olga Zybina
Publisher : Springer Nature
ISBN 13 : 303059422X
Total Pages : 216 pages
Book Rating : 4.0/5 (35 download)
Download or read book Intumescent Coatings for Fire Protection of Building Structures and Materials written by Olga Zybina and published by Springer Nature. This book was released on 2020-11-04 with total page 216 pages. Available in PDF, EPUB and Kindle. Book excerpt: The book provides practical recommendations for creation of fire retardant materials with an increased service life. The enhanced fire resistance seen in these materials is based on the regularities of the chemical and physicochemical interaction of the components of intumescent composition in the process of thermolytic synthesis of heat-insulating char-foamed layers. The aim of fire protection of various objects with intumescent materials is to create a heat-insulating charred layer on the surface of structural elements; this layer can withstand high temperatures and mechanical damage which are typical during fires. The authors describe the contribution of basic components (melamine, pentaerythritol, ammonium polyphosphate), additional components (chlorinated paraffin, urea, cellulose, carbon nano additives, etc.) and polymer binders of intumescent compositions on the process of charring. The technological aspects of manufacturing, application and operation of fire retardant intumescent compositions, which can be useful for organizations that produce and use fire retardant materials, are also described.
Author : Bastien Gardelle
Publisher :
ISBN 13 :
Total Pages : 0 pages
Book Rating : 4.:/5 (87 download)
Download or read book Development and Resistance to Fire of Intumescent Silicone Based Coating written by Bastien Gardelle and published by . This book was released on 2013 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: The purpose of this Ph.D work is to develop intumescent coatings for the protection of steel against fire. The aim of this coating is to ensure the integrity of steel structure exposed to fire since steel loses more than 50% of its load capacity above 550°C. Intumescent coatings expand in case of fire leading to the formation of an insulative barrier limiting the heat transfer from the heat source to the substrate. Most of these coatings are organic based and thus exhibit some limitations. Thus, in this work, hybrid organic-inorganic coatings based on silicone resins were developed. In a first step, it is shown that room temperature vulcanized silicone rubber is the silicone matrix exhibiting the best insulative properties in fire scenarios. Expandable graphite is then used as blowing agent to make the silicone swell when exposed to fire. Due to several interactions between silicone and expandable graphite at high temperature, the coating exhibits excellent fire performance. This performance was attributed to the swelling properties, the low thermal conductivity at high temperature and the good cohesion of the developed char. Additional fillers such as calcium carbonate and organoclay are incorporated in the formulation to increase the mechanical properties of the char. Finally, the critical parameters governing the insulative properties of intumescent silicone coatings have been determined. Moreover, it was pointed out that it is possible to develop silicone coatings exhibiting better fire performance than commercial intumescent paint for the protection of steel against fire in both hydrocarbon and cellulosic fire scenarios.
Author : Jean Marc Franssen
Publisher : CRC Press
ISBN 13 : 0203875494
Total Pages : 182 pages
Book Rating : 4.2/5 (38 download)
Download or read book Designing Steel Structures for Fire Safety written by Jean Marc Franssen and published by CRC Press. This book was released on 2009-05-06 with total page 182 pages. Available in PDF, EPUB and Kindle. Book excerpt: Structural design in fire conditions is conceptually similar to structural design in normal temperature conditions, but often more difficult because of internal forces induced by thermal expansion, strength reduction due to elevated temperatures, much larger deflections, and numerous other factors. Before making any design decisions it is esse
Author : Razvan-Ioan Costa
Publisher :
ISBN 13 :
Total Pages : 0 pages
Book Rating : 4.:/5 (135 download)
Download or read book Thermal Resistance of Steel Profiles Protected with Intumescent Coating written by Razvan-Ioan Costa and published by . This book was released on 2016 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Intumescent coatings as passive fire protection materials are increasingly being used in steel constructions because of their advantages, as for example: light weight, good aesthetics, they take no space and can be applied off-site. The current design is based on the ISO834 'standard fire curve' and it underlines that thermal properties of the intumescent coating can be taken independently in what regards the fire conditions. The current study aimed at highlighting that the thermal resistance is dependent on the fire scenario and in particular on the heating rate. In serving this purpose, two sets of experiments were conducted. The first set was conducted in an electric oven and it highlighted the development of the thermal resistance at low heating rates, and the second one took place in a gas furnace where the "ISO834" fire curve was used as fire exposure. The used steel profiles were IPE400 having a DFT of 1mm of commercial intumescent paint. The development of the thermal resistance respects a complex pattern which was described in an accurate way by dividing it into relevant phases, on the basis of what had been done in a previous DTU project. Building upon those results, a mathematical model has been developed, which establishes a relation between the steel temperature and the three values of the thermal resistance assessed in the different phases of its variation during the heating process. Precise criteria has been defined in order to assess the different values of the thermal resistance for the different phases on the basis of the heating rate. A good match of the behavior of the paint is obtained by using the model, which has been validated in a range of 3-95°C/min. Ultimately the findings in the current study prove the dependency of the thermal resistance on the heating rate, thus highlighting the limit of the current design procedure that does not take into account a realistic fire exposure. The study also proposes an alternative design procedure that can be easily integrated in the current one, by using a series of well identifiable values of the thermal resistance.
Author : Carlos Giudice
Publisher : BoD – Books on Demand
ISBN 13 : 9535134914
Total Pages : 134 pages
Book Rating : 4.5/5 (351 download)
Download or read book New Technologies in Protective Coatings written by Carlos Giudice and published by BoD – Books on Demand. This book was released on 2017-09-06 with total page 134 pages. Available in PDF, EPUB and Kindle. Book excerpt: Materials are at the center of all technological advances; it is evident in considering the spectacular progress that has been made in fields as diverse as engineering, medicine, biology, etc. Materials science and technology must develop researches allowing the generation of new methods of protection to reduce fundamentally the losses of human life as well as the economic ones. The former are impossible of quantifying, while the latter are highly significant; thus, only those derived from corrosive processes in their different forms reach, in technologically developed countries, about 4% of the Gross National Product (GNP), while those derived from fire action range from 0.5 to 1.0% of the mentioned GNP. The book, in the different chapters, displays original systems of superficial protection and of low environmental impact to minimize the losses by corrosion and the fire action.
Author : John A. Purkiss
Publisher : CRC Press
ISBN 13 : 1466585471
Total Pages : 454 pages
Book Rating : 4.4/5 (665 download)
Download or read book Fire Safety Engineering Design of Structures, Third Edition written by John A. Purkiss and published by CRC Press. This book was released on 2013-12-05 with total page 454 pages. Available in PDF, EPUB and Kindle. Book excerpt: Designing structures to withstand the effects of fire is challenging, and requires a series of complex design decisions. This third edition of Fire Safety Engineering Design of Structures provides practising fire safety engineers with the tools to design structures to withstand fires. This text details standard industry design decisions, and offers expert design advice, with relevant historical data. It includes extensive data on materials’ behaviour and modeling -- concrete, steel, composite steel-concrete, timber, masonry, and aluminium. While weighted to the fire sections of the Eurocodes, this book also includes historical data to allow older structures to be assessed. It extensively covers fire damage investigation, and includes as far back as possible, the background to code methods to enable the engineer to better understand why certain procedures are adopted. What’s new in the Third Edition? An overview in the first chapter explains the types of design decisions required for optimum fire performance of a structure, and demonstrates the effect of temperature rise on structural performance of structural elements. It extends the sections on less common engineering materials. The section on computer modelling now includes material on coupled heat and mass transfer, enabling a better understanding of the phenomenon of spalling in concrete. It includes a series of worked examples, and provides an extensive reference section. Readers require a working knowledge of structural mechanics and methods of structural design at ambient conditions, and are helped by some understanding of thermodynamics of heat transfer. This book serves as a resource for engineers working in the field of fire safety, consultants who regularly carry out full fire safety design for structure, and researchers seeking background information. Dr John Purkiss is a chartered civil and structural engineer/consultant and former lecturer in structural engineering at Aston University, UK. Dr Long-Yuan Li is Professor of Structural Engineering at Plymouth University, UK, and a Fellow of the Institution of Structural Engineers.
