Thematische Bibliographien / Fire resistance of concrete

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Auswahl der wissenschaftlichen Literatur zum Thema „Fire resistance of concrete“

Autor: Grafiati

Veröffentlicht am 28. Juni 2021

Zuletzt aktualisiert am 6. Februar 2022

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Zeitschriftenartikel zum Thema "Fire resistance of concrete"

Balázs, György L., und Olivér Czoboly. „Fibre Cocktail to Improve Fire Resistance“. Key Engineering Materials 711 (September 2016): 480–87. http://dx.doi.org/10.4028/www.scientific.net/kem.711.480.

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Favourable experience with fibre reinforced concrete (FRC) resulted in its increasing use worldwide. The properties of fibre reinforced concrete are mostly influenced by the type and the amount of fibres. Our experimental study was directed to the possible improvements of the residual flexural strength and the properties of concrete exposed to high temperatures with different fibre cocktails including steel, micro polymer or cellulose fibres. The influence of type and amount of fibres on residual flexural strength in cold state were tested after 300, 500 or 800 °C temperature loading.

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Lie, T. T., und V. K. R. Kodur. „Thermal and mechanical properties of steel-fibre-reinforced concrete at elevated temperatures“. Canadian Journal of Civil Engineering 23, Nr. 2 (01.04.1996): 511–17. http://dx.doi.org/10.1139/l96-055.

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For use in fire resistance calculations, the relevant thermal and mechanical properties of steel-fibre-reinforced concrete at elevated temperatures were determined. These properties included the thermal conductivity, specific heat, thermal expansion, and mass loss, as well as the strength and deformation properties of steel-fibre-reinforced siliceous and carbonate aggregate concretes. The thermal properties are presented in equations that express the values of these properties as a function of temperature in the temperature range between 0 °C and 1000 °C. The mechanical properties are given in the form of stress–strain relationships for the concretes at elevated temperatures. The results indicate that the steel fibres have little influence on the thermal properties of the concretes. The influence on the mechanical properties, however, is relatively greater than the influence on the thermal properties and is expected to be beneficial to the fire resistance of structural elements constructed of fibre-reinforced concrete. Key words: steel fibre, reinforced concrete, thermal properties, mechanical properties, fire resistance.

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Hubáček, Adam, und Veronika Ondryášová. „Research of Fire Resistance of Tunnel Lining Concrete“. Solid State Phenomena 249 (April 2016): 14–20. http://dx.doi.org/10.4028/www.scientific.net/ssp.249.14.

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The article is involved with study of fire resistance of concrete for tunnel linings. It summarises the problems of present knowledge of concrete resistance in tunnels and deals with behaviour of concrete particular parts at exposure to high temperatures. Further possibilities of fire resistance improvement for production of concretes together with fire prevention are described in this paper.

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Chang, Chuan Peng, Shi Wu Huang, Xue Feng Li, Bo Tian und Zi Yi Hou. „A Study of the Capability for Fire Resistance of Polypropylene Fibre Concrete“. Advanced Materials Research 857 (Dezember 2013): 116–23. http://dx.doi.org/10.4028/www.scientific.net/amr.857.116.

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The purpose of this paper is to examine the effect of various polypropylene fibre additions (length and content) to concrete on compressive strength and explosive spalling when subjected to high temperatures, which simulate the building or tunnel fires. The experimental results show that the compressive strength of polypropylene fiber concrete (PFC) and plain concrete decreases with increasing temperature. Fibre content in a certain range has a small effect on the compressive strength of the concrete, therefore the polypropylene (PP) fibers has a great influence on the anti-spalling behavior of concrete under fire loading to ensure the integrity of the structure. Keywords: concrete, polypropylene fibre, high temperature, compressive strength, spalling

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Kodur, VKR. „Performance of high strength concrete-filled steel columns exposed to fire“. Canadian Journal of Civil Engineering 25, Nr. 6 (01.12.1998): 975–81. http://dx.doi.org/10.1139/l98-023.

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Results from an experimental program on the behaviour of high strength concrete-filled steel hollow structural section (HSS) columns will be presented for three types of concrete filling. A comparison will be made of the fire-resistance performance of HSS columns filled with normal strength concrete, high strength concrete, and steel-fibre-reinforced high strength concrete. The various factors that influence the structural behaviour of high strength concrete-filled HSS columns under fire conditions are discussed. It is demonstrated that, in many cases, addition of steel fibres into high strength concrete improves the fire resistance and offers an economical solution for fire-safe construction.Key words: high strength concrete, steel columns, fire-resistance design, high-temperature behaviour, concrete-filled steel columns.

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Luhar, Salmabanu, Demetris Nicolaides und Ismail Luhar. „Fire Resistance Behaviour of Geopolymer Concrete: An Overview“. Buildings 11, Nr. 3 (25.02.2021): 82. http://dx.doi.org/10.3390/buildings11030082.

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Even though, an innovative inorganic family of geopolymer concretes are eye-catching potential building materials, it is quite essential to comprehend the fire and thermal resistance of these structural materials at a very high temperature and also when experiencing fire with a view to make certain not only the safety and security of lives and properties but also to establish them as more sustainable edifice materials for future. The experimental and field observations of degree of cracking, spalling and loss of strength within the geopolymer concretes subsequent to exposure at elevated temperature and incidences of occurrences of disastrous fires extend an indication of their resistance against such severely catastrophic conditions. The impact of heat and fire on mechanical attributes viz., mechanical-compressive strength, flexural behavior, elastic modulus; durability—thermal shrinkage; chemical stability; the impact of thermal creep on compressive strength; and microstructure properties—XRD, FTIR, NMR, SEM as well as physico-chemical modifications of geopolymer composites subsequent to their exposures at elevated temperatures is reviewed in depth. The present scientific state-of-the-art review manuscript aimed to assess the fire and thermal resistance of geopolymer concrete along with its thermo-chemistry at a towering temperature in order to introduce this novel, most modern, user and eco-benign construction materials as potentially promising, sustainable, durable, thermal and fire-resistant building materials promoting their optimal and apposite applications for construction and infrastructure industries.

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Kim, Yun Yong. „Fire Resistance Performance of Precast Segmental Concrete Lining for Shield Tunnel“. Journal of the Korean Society of Civil Engineers 34, Nr. 1 (2014): 95. http://dx.doi.org/10.12652/ksce.2014.34.1.0095.

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Belov, Vyacheslav, und Valery Morozov. „Fire Resistance of Non-Crack Resistant Flexural Reinforced Concrete Elements“. Applied Mechanics and Materials 725-726 (Januar 2015): 15–20. http://dx.doi.org/10.4028/www.scientific.net/amm.725-726.15.

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In developed countries only loss of property because of fire makes annually up to 2% of their national income [9, 15]. The bearing capacity of reinforced concrete structures at high temperature impact is lost within several dozens of minutes [1, 3, 5, 10, 12, 18, 25]. Disappointing statistics of increase of both the number of fires and the scope of damage due to them aggravates the actual problem of determination of reinforced concrete structures fire-endurance. The main problems and methods of evaluation of reinforced concrete structure fire resistance are stated. Within the framework of block approach to evaluation of strain of flexural reinforced concrete elements with cracks, design model of reinforced concrete thermo-force resistance is made. Extended nomenclature of influences of high temperature at fire on decrease of performance of bearing reinforced concrete structures is considered. Empirical dependencies of strength and strain characteristics of concrete and reinforcement on high temperatures are used. Proposals on specification of evaluation of fire resistance of statically indeterminate reinforced concrete structures are formulated.

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Lublóy, Éva. „The Influence of Concrete Strength on the Effect of Synthetic Fibres on Fire Resistance“. Periodica Polytechnica Civil Engineering 62, Nr. 1 (23.06.2017): 136–42. http://dx.doi.org/10.3311/ppci.10775.

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Numerous studies have verified that increased concrete strength reduces its resistance to fire, leads to a higher degree of strength reduction and higher chances of spalling of concrete surfaces.The risks of spalling of concrete surfaces can be reduced by adding synthetic polypropylene fibres. Numerous experiments have shown that the risk of spalling of the concrete surface is significantly lower when using short, small diameter fibres of polypropylene synthetic, because the pore structure created by the burning of fibres reduces the risk of cracking.However, the question arises whether other types of fibres of greater diameter and length are still able to prevent spalling of concrete surfaces without drastically reducing the strength and if so, in what range of concrete strength it is true.The experiments are aimed to determine the effects of micro and macro synthetic fibres on the post-fire residual compressive strength, flexural strength and porosity of concrete.Nine kinds of mixture were prepared and tested. Three of them are without fibers (reference concretes) with diverse strength, three with synthetic micro-fibres with diverse strength and three with synthetic macro-fibres of diverse strength. The experiment was conducted with three concretes with different strength. Each type had a reference concrete without fibre reinforcement, one with micro- and one with macro-fibres.

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Choi. „Fire resistance assessment of high strength segment concrete depending on PET fiber amount under fire curves“. Journal of Korean Tunnelling and Underground Space Association 16, Nr. 3 (2014): 311. http://dx.doi.org/10.9711/ktaj.2014.16.3.311.

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Dissertationen zum Thema "Fire resistance of concrete"

Ab, Kadir Mariyana Aida. „Fire resistance of earthquake damaged reinforced concrete frames“. Thesis, University of Edinburgh, 2013. http://hdl.handle.net/1842/7969.

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The topic of structural damage caused by fires following an earthquake (FFE) has been discussed extensively by many researchers for over a decade in order to bring the two fields closer together in the context of performance based structural engineering. Edinburgh University, Heriot-Watt University, Indian Institute of Technology Roorkee (IIT Roorkee) and Indian Institute of Science initiated a collaboration to study this problem under a UK-India Engineering Research Initiative (UKIERI) funded project. The first construction of a single-storey reinforced concrete frame at IIT Roorkee was completed in summer 2011; this is known as the Roorkee Frame Test 1 throughout this thesis. This thesis presents the modelling of the Roorkee Frame Test 1 using the finite element method and assesses the capability of the numerical methodologies for analysing these two sequential events. Both two and three dimensional finite element models were developed. Beam and shell elements were chosen for the numerical modelling, which was carried out using the general purpose finite element package ABAQUS (version 6.8). The variation in material properties caused by these two types of loading, including strength and stiffness degradation, compressive hardening, tension stiffening, and thermal properties, is implemented in the numerical modelling. Constitutive material calculations are in accordance with EC4 Part 1.1, and all loading is according to IS 1893:2002 Part 1 (Indian Standard). The time-temperature curve used in the analysis is based on data from the test carried out. The behaviour of the Roorkee Frame Test 1 when subjected to monotonic, cyclic lateral loading followed by fire is presented. The capacity of the frame when subjected to lateral loading is examined using a static non-linear pushover method. Incremental lateral loading is applied in a displacement-controlled manner to induce simulated seismic damage in the frame. The capacity curve, hysteresis loops and residual displacements are presented, discussed and compared with the test results. The heat transfer analysis using three dimensional solid elements was also compared against temperature distributions recorded during the Roorkee frame fire test. Based on the smoke layer theory, two emissivity values were defined. In this study, the suitability of numerical modelling using ABAQUS to capture the behaviour of Roorkee frame test is examined. The results from this study show that the 3D ABAQUS model predicted more reliable hysteresis curves compared to the 2D ABAQUS model, but both models estimated the lateral load capacity well. However neither model was able to simulate the pinching effect clearly visible in the hysteresis curves from the test. This was due to noninclusion of the bond slip effect between reinforcing bars and concrete. The residual displacement obtained at the end of the cyclic lateral loading analysis from the 2D ABAQUS model is higher than that seen in the test. However, the result in the 3D ABAQUS model matched the trend obtained in the test. The both columns appear to stiffen under the heating and the residual displacement seems to recover slightly. Lateral displacements, obtained in the thermo-mechanical analysis of the numerical models, show that thermal expansion brings the frame back towards its initial position. Finally, correlation studies between analytical and experimental results are conducted with the objective to establish the validity of the proposed model and identify the significance of various effects on the local and global response of fire resistance earthquake damaged of reinforced concrete frames. These studies show that the effect of tension stiffening and bond-slip are very important and should always be included in finite element models of the response of reinforced concrete frame with the smeared crack model when subjected to lateral and thermal loading. The behaviour of reinforced concrete frames exposed to fire is usually described in terms of the concept of the fire resistance which defined in terms of displacement limit. This study shows the global displacement of the frame subjected to fire recover slightly due to the thermal expansion during the heating.

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Ezekiel, Samson. „Fire resistance simulation for high strength reinforced concrete“. Thesis, London South Bank University, 2015. http://researchopen.lsbu.ac.uk/2084/.

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High strength reinforced concrete (HSRC) has been used more frequently in the construction of high rise buildings and other concrete structures in recent decades due to its advantages and excellent performance over normal strength and conventional reinforced concrete. Some of these advantages include: higher strength, better durability and allowance for provision of using less concrete and smaller section sizes. Although HSRC performs better than normal strength reinforced concrete (NSRC) at ambient temperatures, NSRC has been found to perform better than HSRC at elevated temperatures and fire conditions. Provision of adequate fire resistance for reinforced concrete (RC) structures is essential as fire represents an extreme loading and hazardous condition to which a structure might be exposed during its life span. The fire resistance of RC members is evaluated using a prescriptive approach which is irrational and conservative. Current codes of practice and construction in industry are moving towards performance based fire design method with computing software, which is a rationally based method with each structure designed to meets its own need. This method requires comprehensive knowledge and modelling of concrete and reinforcement material behaviour and their response at elevated temperatures. The fire resistance of HSRC members (columns and beams) in this study was evaluated using a three-dimensional Finite Element (FE) model created in ANSYS. The stress – strain behaviour of concrete proposed in this research was used in modelling the behaviour of concrete in ANSYS, while other concrete and steel material properties were accounted for by using models proposed by other researchers. The fire resistance of the HSRC members is evaluated using coupled field analysis (thermal – structural analysis) with performance based failure criteria provided in the code of practice. The accuracy of the FE model was verified by comparing the thermal response, structural response and predicted fire resistance with fire test results obtained. Using the validated FE model, parametric studies were conducted to investigate the influence of various parameters affecting the fire performance of HSRC members exposed to fire. From the parametric studies conducted, simplified calculation models were developed for evaluating the resistance of HSRC members (columns and beams) exposed to fire. These models were validated with results from ANSYS and a fire resistance test. The simple model accounts for major factors such as member size, load ratio and fire scenario, and therefore can be easily incorporated into structural design. The FE model and simple calculation model provide a rational approach for evaluating the fire resistance of HSRC (members) and predict a more accurate fire resistance than the prescriptive approach.

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GEREN, REBECCA. „CALCULATING FIRE-RESISTANCE RATINGS OF CONCRETE MASONRY UNIT (CMU) WALLS“. Thesis, The University of Arizona, 2016. http://hdl.handle.net/10150/618764.

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This paper serves as a statement accompanying a capstone project for a degree in Information: Science and Technology. It details the work that went into creating the web page dedicated to helping specifications and codes writers to calculate fire resistance ratings of concrete masonry unit (CMU) walls. It briefly examines what a CMU wall is and the calculations that are involved in calculating fire-resistance ratings. The paper delves into how the site itself works, what the user can expect to see when first accessing the page and how to follow the steps in order to get the correct output. Without getting too technical, the paper also describes the four programming languages that were involved with coding the web page and what they handle in accordance with the page’s design and implementation. Finally, the paper concludes with an appendix containing the URL that will lead the reader to the web calculator and provides some practice problems that will allow the reader to test the calculator’s abilities.

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Fox, David Christopher Alexander. „The fire performance of restrained polymer-fibre-reinforced concrete composite slabs“. Thesis, University of Edinburgh, 2013. http://hdl.handle.net/1842/17998.

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Composite slab flooring systems for steel-framed buildings consist of a profiled steel deck and a cast in-situ slab. The slab traditionally includes a layer of light gauge steel mesh reinforcement. This mesh is placed near the surface, which controls the early-age cracking caused by concrete drying and shrinkage. The steel mesh also performs a vital structural role at high temperatures. Structural fire tests and numerical investigations over the last 15 years have established that the mesh can provide enhanced fire resistance. A load-carrying mechanism occurs in fire with the mesh acting as a tensile catenary, spanning between perimeter supports. This structural mechanism is currently utilised regularly in the performance-based fire engineering design of steel-framed buildings. In a recent development, this mesh can be removed by using concrete with dispersed polymer fibre reinforcement to form the composite slab. The polymer-fibre-reinforced concrete (PFRC) is poured onto the deck as normal, and the fibres resist early crack development. For developers this technique has several advantages over traditional reinforcing mesh, such as lower steel costs, easier site operations and faster construction. However, to date the fire resistance of such slabs has been demonstrated only to a limited extent. Single element furnace tests with permissible deflection criteria have formed the basis for the fire design of such slabs. But these have not captured the full fire response of a structurally restrained fibre-reinforced slab in a continuous frame. The polymer fibres dispersed throughout the slab have a melting point of 160ºC, and it is unclear how they contribute to overall fire resistance. In particular, there has been no explanation of how such slabs interact with the structural perimeter to maintain robustness at high deflections. This project was designed to investigate the structural fire behaviour of restrained polymer-fibre-reinforced composite slabs. An experimental series of six slab experiments was designed to investigate the effects of fibre reinforcement and boundary restraint. A testing rig capable of recording the actions generated by the heat-affected slab was developed and constructed. Model-scale slab specimens were tested with different reinforcement and perimeter support conditions, to establish the contributions to fire resistance of the polymer fibres and applied structural restraint.

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O'Neill, James William. „The Fire Performance of Timber-Concrete Composite Floors“. Thesis, University of Canterbury. Civil and Natural Resources, 2009. http://hdl.handle.net/10092/3912.

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Timber-concrete composite floors are a combination of timber joists and concrete topping, creating a flooring system to best utilise the advantages each material has to offer. Timber is used as the main tensile load bearing material due to its high strength-to-weight ratio, while concrete is used in floor slabs for its advantages in stiffness and acoustic separation. The strength of the system is dependent on the connection between timber and concrete, thus the connection must be strong, stiff, and economical to manufacture, to ensure that the flooring system is economically viable. This research investigated the fire performance and failure behaviour of timber-concrete composite floor systems currently under development in New Zealand, resulting in a calculation method for evaluating the fire resistance of these floors. Furnace tests were performed on two full-size floor specimens at the Building Research Association of New Zealand (BRANZ). Both floor specimens were 4 m long and 3 m wide, consisting of 65 mm concrete topping on plywood formwork, connected to double LVL floor joists. They were tested over a 4 m span, subjected to a nominal design live load of 2.5 kPa. Both floors were subjected to the ISO 834 test fire for over 60 minutes. Two separate connection types were tested; concrete notches cut into the timber beams with an incorporated shear key, and metal toothed plates pressed between the double beams. It was found that the reduction in section size of the timber beams due to the fire governed the failure mode of the floors. Due to the composite action achieved by the connections, the floor units were able to withstand prolonged exposure to the test fire, well exceeding one hour. The test data and visual observations aided in the development of a numerical model for evaluating the fire resistance of the floors. This was developed in a spreadsheet that is able to predict the expected fire resistance of these floors, taking into account some major time dependent variable properties that can have an effect on the overall performance. Load-span tables have been produced to give the estimated fire resistance of floors with differing floor dimensions, span lengths and applied loads.

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Al-Mansouri, Omar. „Behavior of bonded anchors in concrete under fire“. Thesis, Ecole nationale supérieure Mines-Télécom Lille Douai, 2020. http://www.theses.fr/2020MTLD0011.

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La technique des ancrages par scellement chimique consiste à sceller une tige filetée dans un trou foré dans le béton durci grâce à une résine polymère. Les principaux avantages de cette technique sont la facilité d’installation et les propriétés mécaniques élevées de la résine à température ambiante. Grâce à l’adhérence de la résine, ce type d’ancrage peut être dimensionné pour avoir des performances similaires voire supérieures de celles des autres systèmes d’ancrages (mécaniques et coulés en place). En revanche, à hautes températures, e.g. incendie, l’adhérence de la résine se dégrade rapidement menaçant la capacité de l’ancrage à supporter les charges appliquées. Cela crée un risque sur les vies et les biens dans le bâtiment. Plusieurs accidents se sont produits comme l’effondrement du Big Dig Tunnel aux USA (2006) et le tunnel Sasago au Japon (2012) qui ont montré l’importance d’avoir des méthodes d’évaluation fiables de ce type d’ancrages. L’objectif de cette thèse est d’établir une méthode d’évaluation et une méthode de dimensionnement afin d’assurer la tenue structurale des ancrages par scellement chimique en situation d’incendie. L’étude est structurée en quatre parties :i. Protocoles expérimentaux pour les essais au feu des chevilles chimiques. Des essais d’arrachements au feu ont été réalisés sur des chevilles chimiques (résine époxy). Les profils de températures le long de l’ancrage ont été déterminés expérimentalement pour différentes configurations d’essais. Ensuite, ces profils thermiques ont été exploités comme données d’entrée pour calculer la résistance des chevilles par la méthode Pinoteau (intégration des résistances). Cette étude a permis de préciser les conditions expérimentales à utiliser pour l’évaluation des chevilles chimiques au feu.ii. Proposition d’un modèle de dimensionnement basé sur des calculs thermiques en utilisant la méthode des éléments finis en 3D. Les profils de température correspondant aux différentes configurations d’un ancrage dans le bâtiment ont été calculés à l’aide des propriétés thermophysiques des matériaux Eurocode pour le béton et l’acier. La modélisation en 3D a été comparée à la modélisation en 2D plane utilisée communément dans la littérature. Les deux approches ont été comparées aux mesures expérimentales et couplées avec la méthode Pinoteau pour évaluer l’influence de la méthode de modélisation sur le résultat de l’intégration des résistances. Suite à la validation du modèle 3D, des investigations thermiques ont été conduites sur d’autres paramètres pouvant influencer les essais au feu des chevilles chimiques. Cette étude a permis de valider la méthode de calcul en 3D comme la méthode la plus représentative du problème d’une cheville chimique au feu.iii. Validation de la méthode Pinoteau pour le dimensionnement des chevilles chimiques au feu en utilisant le modèle de dimensionnement proposé précédemment. Les calculs de la résistance au feu de trois chevilles chimiques différentes ont été comparés à des essais d’arrachement. Cette étude menée sur une large gamme de tailles de chevilles a permis de valider l’utilisation de l’intégration des résistances pour le dimensionnement.iv. Etude du comportement des chevilles chimiques dans le béton fissuré à hautes températures. Une méthode d’évaluation a été développée afin de déterminer la réduction de la résistance d’adhérence liée à la fissuration du béton, à hautes températures (chauffage électrique). Des essais ont été faits sur des chevilles chimiques (résine époxy) dans le béton fissuré et non-fissuré à température ambiante et à hautes températures. La réduction de la résistance avec l’augmentation de la température a été investiguée. Cette étude a permis d’obtenir une bonne répétabilité des résultats grâce à l’augmentation du nombre d’essais et le bon contrôle du scénario thermique appliqué
The technique of bonded anchors consists of fastening a threaded rod in a drilled hole in hardened concrete by polymer adhesives. The main advantages of this technique are ease of installation and the high mechanical properties of the adhesive at ambient temperature. Due to the adherence of the adhesive resin, this type of anchors can be designed to ensure similar or even higher performances compared to other anchor systems (mechanical and cast-in). However, at high temperatures, e.g. fire situation, the adherence of the adhesive degrades rapidly. Fire decreases the adherence of the adhesive and leads to the inability of the anchor to support the fixed objects. This creates a risk on the lives and goods inside the building. Several accidents occurred like the collapse of the Big Dig Tunnel in the USA (2006) and the Sasago tunnel in Japan (2012) and highlighted the importance of having reliable evalutation methods of this type of anchors. The objective of this thesis is to establish an assessment and a design method to ensure the structural resistance of bonded anchors in fire situations. This project is structured into four main parts:i. Experimental protocols for fire tests on bonded anchors. Pull-out fire tests were conducted on bonded anchors (epoxy adhesive). Temperature profiles along the embedment depth of anchors were determined experimentally for different test configurations. Then, these temperature profiles were used as entry data to calculate the fire resistance of anchors using Pinoteau’s method (Resistance Integration Method). This study allowed to precise the experimental conditions to be adopted for fire evaluation of bonded anchors. ii. Proposition of a design model based on transient thermal calculations using finite element method in 3D. Temperature profiles were calculated using the thermophysical material properties of concrete and steel in the Eurocode. 3D modelling was compared to 2D modelling commonly used in the literature. Both approaches were compared to measurements during fire tests and coupled with Pinoteau’s method to assess their impact on the calculation of fire resistance of anchors. Following the validation of the 3D model, thermal investigations were conducted on other parameters that could influence fire tests of bonded anchors. This study allowed to validate the 3D modelling approach as the most representative of the problem of bonded anchors exposed to fire.iii. Validation of Pinoteau’s method for the design of bonded anchors under fire by using the previously proposed design model. Calculations of fire resistance of three different bonded anchor products were compared to pull-out tests. This study conducted on a wide range of anchor sizes lead to the validation of the Pinoteau’s Method for the design of bonded anchors.iv. Study of the behavior of bonded anchors in cracked concrete at high temperatures. An assessment method was developed to determine the reduction of bond strength due to cracked concrete, at high temperatures (electrical heating). Tests were conducted on bonded anchors (epoxy adhesive) in cracked and uncracked concrete, at ambient and high temperatures. The evolution of the reduction with temperature increase was investigated. This study ensured a good repeatability of test results due to the increased testing potential and the good control of the applied heating scenario

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Chan, Wai Wing. „New concept in fire resistant concrete /“. access full-text access abstract and table of contents, 2005. http://libweb.cityu.edu.hk/cgi-bin/ezdb/thesis.pl?phd-ap-b19887486a.pdf.

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Thesis (Ph. D.)--City University of Hong Kong, 2005.
"Submitted to Department of Physics and Materials Science in partial fulfillment of the requirements for the degree of Doctor of Philosophy." Includes bibliographical references (leaves 181-188).

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Chang, Lei. „Experimental Data on Fire-Resistance Behavior of Reinforced Concrete Structures with Example Calculations“. Master's thesis, Alma Mater Studiorum - Università di Bologna, 2012. http://amslaurea.unibo.it/3003/.

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This thesis selects concrete, steel and their relation as research subjects, mainly commentary and discusses the property changes of steel and concrete materials under and after high temperature.The differences and comparisons of reasearch methods and ways between different researchers and different papers,particularly for chinese researches and chinese papers,and partly for comparison between chinese papers methods and Euro-Amercian papers methods about Fire Resistance Behavior of Reinforced Concrete will be summarized and analyzed.The researches on fire-resistance behavior of reinforced concrete become more and more important all over the world. And I would find differences between Chinese researches results, between Chinese researches results and other countries researches results.

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Min, Jeong-Ki. „Numerical prediction of structural fire performance for precast prestressed concrete flooring systems“. Thesis, University of Canterbury. Department of Civil and Natural Resources Engineering, 2012. http://hdl.handle.net/10092/6678.

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In predicting the likely behaviour of precast prestressed concrete flooring systems in fire using advanced finite element methods, an improved numerical model using the non-linear finite element program SAFIR has been developed in order to investigate the effects and the interaction of the surrounding structures and has been used extensively throughout this thesis. Note that fire induced spalling is not included in the analysis. In the numerical investigation of the new model, the reinforced concrete topping is modelled as part of the beam elements in order to predict the behaviour of single hollowcore concrete slabs, with various support conditions, under a Standard ISO fire. It is shown that the current approach using tendons that are anchored into the supporting beams leads to a major problem for precast prestressed flooring systems. In order to resolve this problem, a multi-spring connection model has been developed to include the old and new connection systems corresponding to the New Zealand Concrete Standard NZS 3101. The connection model with hollowcore slabs is validated against a published fire test. The investigation on restrained hollowcore floors is performed with various parameters and boundary support conditions. Numerical studies on various boundary support conditions show that the behaviour of hollowcore floors in fire is very sensitive to the existence of side beams. Further investigations on the effects of fire emergency beams, which reduce the transverse curvature of floors to improve fire resistance, are made on 4x1 multi-bay hollowcore floors with different arrangements of theses beams. The numerical studies show that fire emergency beams significantly increase the fire resistance. Code based equations which can calculate the shear resistance and splitting resistance are then introduced. The Eurocode equation can be modified with high temperature material properties to estimate the shear capacity of a hollowcore slab. The modified Eurocode equation which is fit to fire situations validated against the published literature with respect to shear tests in fire. The structural behaviour of single tee slabs having different axial restraint stiffness as well as the variation of axial thrust in fire is then studied. SAFIR analyses of single tee slabs show that fire performance can increase when a web support type is used that has high axial restraint stiffness. A series of test results on prestressed flat slabs conducted in United States are used to validate a simply supported numerical model. The application of multi-spring connection elements is also investigated in order to examine the feasibility of continuity.

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Vassou, Vassoulla. „Abrasion resistance of fibre reinforced concrete floors“. Thesis, Aston University, 2003. http://publications.aston.ac.uk/14147/.

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This thesis focuses on the investigation of the abrasion resistance of fibre reinforced concrete floors at both the macro and micro levels. A literature review of the available literature concerning subjects allied to the current project is included. This highlights themes relevant to wear mechanisms and the factors influencing it: factors that affect the abrasion resistance of concrete and several test methods for assessing it; and the historical development of fibres and the properties of different fibre types and their influence on concrete. Three accelerated abrasion testers were compared and critically discussed for their suitability for assessing the abrasion resistance of concrete floors. Based on the experimental findings one accelerated abrasion apparatus was selected as more appropriate to be used for carrying out the main investigations. The laboratory programme that followed was undertaken to investigate the influence of various material and construction factors on abrasion resistance. These included mix variations (w/c ratio), fibre reinforcement, geometry, type and volume, curing method and superplasticizing agents. The results clearly show that these factors significantly affected abrasion resistance and several mechanisms were presumed to explain and better understand these observations. To verify and understand these mechanisms that are accountable for the breakdown of concrete slabs, the same concrete specimens that were used for the macro-study, were also subjected to microstructutural investigations using techniques such as Microhardness examination, Mercury intrusion porosimetry and Petrographic examination. It has been found that the abrasion resistance of concrete is primarily dependent on the microstructure and porosity of the concrete nearest to the surface. The feasibility of predicting the abrasion resistance of fibre reinforced concrete floors by indirect and non-destructive methods was investigated using five methods that have frequently been used for assessing the quality of concrete. They included the initial surface absorption test, the impact test, ball cratering, the scratch test and the base hardness test. The impact resistance (BRE screed tester) and scratch resistance (Base hardness tester) were found to be the most sensitive to factors affecting abrasion resistance and hence are considered to be the most appropriate testing techniques.

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Bücher zum Thema "Fire resistance of concrete"

Lawson, R. M. Fire resistance of ribbed concrete floors. London: CIRIA, 1985.

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Both, Cornelis. The fire resistance of composite steel-concrete slabs. Delft: Delft Univ. Press, 1998.

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Gustaferro, A. H. Design for fire resistance of precast prestressed concrete. 2. Aufl. Chicago, Ill: Prestressed Concrete Institute, 1989.

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European Convention for Constructional Steelwork. Technical Committee 3 - Fire Safety of Steel Structures. Calculation of the fire resistance of centrally loaded composite steel-concrete columns exposed to the standard fire. Brussels: European Convention for Structural Steelwork, 1988.

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Joint ACI/TMS Committee 216. Code requirements for determining fire resistance of concrete and masonry construction assemblies (ACI 216.1-07, TMS-216-07): An ACI/TMS Standard. Farmington Hills, MI: American Concrete Institute, 2007.

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Schleich, J. B. Computer assisted analysis of the fire resistance of steel and composite concrete-steel structures (REFAO-CAFIR). Luxembourg: Commission of the European Communities, 1987.

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Kajaste-Rudnitski, Juri. Numerical model of thermoelastic-plastic concrete material. Espoo: Technical Research Centre of Finland, 1993.

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Sadegzadeh, Massud. Abrasion resistance of concrete. Birmingham: University of Aston. Department of Civil Engineering and Construction, 1985.

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Laboratories, Underwriters. Fire resistance directory. Northbrook, Ill: Underwriters Laboratories, Inc., 2003.

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Buchteile zum Thema "Fire resistance of concrete"

Gustaferro, Armand H. „Fire Resistance“. In Handbook of Concrete Engineering, 252–67. Boston, MA: Springer US, 1985. http://dx.doi.org/10.1007/978-1-4757-0857-8_7.

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Wang, Yong C. „Fire Resistance“. In Composite Structures of Steel and Concrete, 223–45. Chichester, UK: John Wiley & Sons, Ltd, 2018. http://dx.doi.org/10.1002/9781119401353.ch6.

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Han, Lin-Hai, Dennis Lam und David A. Nethercot. „Fire-Resistance Design“. In Design Guide for Concrete-Filled Double Skin Steel Tubular Structures, 67–72. First edition. | Boca Raton, FL : CRC Press/Taylor & Francis Group, [2019]: CRC Press, 2018. http://dx.doi.org/10.1201/9780429440410-5.

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Li, Guoqiang, und Peijun Wang. „Fire-Resistance of Composite Concrete Slabs“. In Advanced Topics in Science and Technology in China, 245–80. Berlin, Heidelberg: Springer Berlin Heidelberg, 2013. http://dx.doi.org/10.1007/978-3-642-34393-3_9.

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Balázs, György L., Katalin Kopecskó, Naser Alimrani, Nabil Abdelmelek und Éva Lublóy. „Fire Resistance of Concretes with Blended Cements“. In High Tech Concrete: Where Technology and Engineering Meet, 1420–27. Cham: Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-59471-2_163.

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Fleischmann, Charles, Andy Buchanan und Anthony Abu. „Analytical Methods for Determining Fire Resistance of Concrete Members“. In SFPE Handbook of Fire Protection Engineering, 1949–78. New York, NY: Springer New York, 2016. http://dx.doi.org/10.1007/978-1-4939-2565-0_54.

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Destrée, Xavier, Andrejs Krasnikovs und Sébastien Wolf. „Fire Resistance of Steel Fibre Reinforced Concrete Elevated Suspended Slabs: ISO Fire Tests and Conclusions for Design“. In RILEM Bookseries, 841–51. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-58482-5_74.

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Saurav, Anjani Kumar Shukla und Pratyush Malaviya. „A Comparative Study of Fire Resistance of Concrete Incorporating Ultrafine Slag“. In Advances in Industrial Safety, 291–304. Singapore: Springer Singapore, 2020. http://dx.doi.org/10.1007/978-981-15-6852-7_26.

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Nedviga, Ekaterina, Natalia Beresneva, Marina Gravit und Angelina Blagodatskaya. „Fire Resistance of Prefabricated Monolithic Reinforced Concrete Slabs of “Marko” Technology“. In International Scientific Conference Energy Management of Municipal Transportation Facilities and Transport EMMFT 2017, 739–49. Cham: Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-70987-1_78.

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Kasperkiewicz, Janusz, und Åke Skarendahl. „Fracture Resistance Evaluation of Steel Fibre Concrete“. In Brittle Matrix Composites 2, 619–28. Dordrecht: Springer Netherlands, 1989. http://dx.doi.org/10.1007/978-94-009-2544-1_65.

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Konferenzberichte zum Thema "Fire resistance of concrete"

Fellinger, Joris H. H., und C. (Kees) Both. „Fire Resistance: Reliability Vs. Time Analyses“. In Composite Construction in Steel and Concrete IV Conference 2000. Reston, VA: American Society of Civil Engineers, 2002. http://dx.doi.org/10.1061/40616(281)71.

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Kien, Dao Duy, Do Van Trinh, Khong Trong Toan und Le Ba Danh. „Fire Resistance Evaluation of Reinforced Concrete Structures“. In 2020 5th International Conference on Green Technology and Sustainable Development (GTSD). IEEE, 2020. http://dx.doi.org/10.1109/gtsd50082.2020.9303102.

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Kodur, V. K. R. „Achieving Fire Resistance Through Steel Concrete Composite Construction“. In Structures Congress 2005. Reston, VA: American Society of Civil Engineers, 2005. http://dx.doi.org/10.1061/40753(171)53.

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Mostafaei, H., Frank J. Vecchio und N. Bénichou. „Seismic Resistance of Fire-Damaged Reinforced Concrete Columns“. In ATC and SEI Conference on Improving the Seismic Performance of Existing Buildings and Other Structures. Reston, VA: American Society of Civil Engineers, 2009. http://dx.doi.org/10.1061/41084(364)128.

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Zhao, Bin, und Christophe Fraud. „Fire Resistance Analysis of Open Car Parks with Composite Structures Under Real Car Fire“. In Fifth International Conference on Composite Construction in Steel and Concrete. Reston, VA: American Society of Civil Engineers, 2006. http://dx.doi.org/10.1061/40826(186)56.

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BHATT, P., V. KODUR, A. SHAKYA und T. ALKHRDAJI. „Fire resistance of insulated FRP-strengthened concrete flexural members“. In 9th International Conference On Concrete Under Severe Conditions - Environment and Loading. MENVIA, 2019. http://dx.doi.org/10.31808/5ca6e03f5ca4f0d406ac88ba.

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Thienpont, Thomas, Ruben Van Coile, Balsa Jovanovic, Wouter De Corte und Robby Caspeele. „Global resistance factor for the burnout resistance of concrete slabs exposed to parametric fires“. In 11th International Conference on Structures in Fire (SiF2020). Brisbane, Australia: The University of Queensland, 2020. http://dx.doi.org/10.14264/c106f43.

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Ghannam, Mohamed, Zhong Tao und Tian Yi Song. „Fire Resistance Tests of Concrete-Filled Stainless Steel Tubular Columns“. In International Conference on Composite Construction in Steel and Concrete 2013. Reston, VA: American Society of Civil Engineers, 2016. http://dx.doi.org/10.1061/9780784479735.036.

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Tian, Jingbo, und Wenjun Qu. „Judgement methods of fire resistance time of hybrid reinforced concrete beams“. In IABSE Symposium, Guimarães 2019: Towards a Resilient Built Environment Risk and Asset Management. Zurich, Switzerland: International Association for Bridge and Structural Engineering (IABSE), 2019. http://dx.doi.org/10.2749/guimaraes.2019.0955.

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<p>Hybrid reinforced concrete beams have been designed by replacing the steel bars in areas with weak durability with fiber-reinforced plastic bars. This paper suggests the judgement methods of fire resistance time of hybrid reinforced concrete beams by considering about the judgement methods of fire resistance time of steel reinforced concrete beams and FRP reinforced concrete beams that were proposed by scholars and standards of various countries. Six hybrid reinforced concrete beams were subjected to a fire test. The deflection and the temperature of hybrid reinforced concrete beams in the fire test were recorded. These judgement methods suggested by these scholars and standards are applied in judging the fire resistance time of these six hybrid reinforced concrete beams respectively. The results are compared to suggest that almost all the main factors having a great influence on fire resistance time of hybrid reinforced concrete beams are considered by the deformation limitation method, and this method can be taken as the main determinant in the judgement methods. The heat insulation of beams and the average temperatures of the surface of beams cannot be used directly to judge the fire resistance time. The judgement methods are improved by combination of these methods so that the judgement methods can be used for the design.</p>

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ZHANG, Xuan, Qing-Qing SHEN, Zhong-Yi LI, Song-Hua TANG und Ying-She LUO. „Experimental Study on Fire Resistance of Reinforced Concrete Frame Structure“. In 2014 International Conference on Mechanics and Civil Engineering (icmce-14). Paris, France: Atlantis Press, 2014. http://dx.doi.org/10.2991/icmce-14.2014.186.

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Berichte der Organisationen zum Thema "Fire resistance of concrete"

Bisby, Luke, Hossein Mostafaei und Pierre Pimienta. White paper on fire resistance of concrete structures. Gaithersburg, MD: National Institute of Standards and Technology, September 2014. http://dx.doi.org/10.6028/nist.gcr.15-983.

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Yang, Hua, Faqi Liu, Yuyin Wang und Sumei Zhang. FIRE RESISTANCE DESIGN OF CIRCULAR STEEL TUBE CONFINED REINFORCED CONCRETE COLUMNS. The Hong Kong Institute of Steel Construction, Dezember 2018. http://dx.doi.org/10.18057/icass2018.p.094.

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Phan, Long T., Therese P. McAllister, John L. Gross und Morgan J. Hurley, Hrsg. Best practice guidelines for structural fire resistance design of concrete and steel buildings. National Institute of Standards and Technology, November 2010. http://dx.doi.org/10.6028/nist.tn.1681.

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Mao, Xiao-Yong, Li-Ren Zhou und Zhen Zhang. EXPERIMENTAL STUDY AND THEORETIC ANALYSIS ON FIRE RESISTANCE OF ANGLE STEEL STRENGTHENED REINFORCED CONCRETE COLUMNS. The Hong Kong Institute of Steel Construction, Dezember 2018. http://dx.doi.org/10.18057/icass2018.p.099.

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Ebeling, Robert, und Barry White. Load and resistance factors for earth retaining, reinforced concrete hydraulic structures based on a reliability index (β) derived from the Probability of Unsatisfactory Performance (PUP) : phase 2 study. Engineer Research and Development Center (U.S.), März 2021. http://dx.doi.org/10.21079/11681/39881.

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This technical report documents the second of a two-phase research and development (R&D) study in support of the development of a combined Load and Resistance Factor Design (LRFD) methodology that accommodates geotechnical as well as structural design limit states for design of the U.S. Army Corps of Engineers (USACE) reinforced concrete, hydraulic navigation structures. To this end, this R&D effort extends reliability procedures that have been developed for other non-USACE structural systems to encompass USACE hydraulic structures. Many of these reinforced concrete, hydraulic structures are founded on and/or retain earth or are buttressed by an earthen feature. Consequently, the design of many of these hydraulic structures involves significant soil structure interaction. Development of the required reliability and corresponding LRFD procedures has been lagging in the geotechnical topic area as compared to those for structural limit state considerations and have therefore been the focus of this second-phase R&D effort. Design of an example T-Wall hydraulic structure involves consideration of five geotechnical and structural limit states. New numerical procedures have been developed for precise multiple limit state reliability calculations and for complete LRFD analysis of this example T-Wall reinforced concrete, hydraulic structure.

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Clifton, James R. The frost-resistance of concrete. Gaithersburg, MD: National Institute of Standards and Technology, 1990. http://dx.doi.org/10.6028/nist.ir.90-4229.

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Gold, Vladimir M. Analysis of the Penetration Resistance of Concrete. Fort Belvoir, VA: Defense Technical Information Center, August 1997. http://dx.doi.org/10.21236/ada329140.

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Phan, L. T. Fire performance of high-strength concrete:. Gaithersburg, MD: National Institute of Standards and Technology, 1996. http://dx.doi.org/10.6028/nist.ir.5934.

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Gross, John, Frederick Hervey, Mark Izydorek, John Mammoser und Joseph Treadway. Fire resistance tests of floor truss systems. Gaithersburg, MD: National Institute of Standards and Technology, 2005. http://dx.doi.org/10.6028/nist.ncstar.1-6b.

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White, Robert H. Fire resistance of structural composite lumber products. Madison, WI: U.S. Department of Agriculture, Forest Service, Forest Products Laboratory, 2006. http://dx.doi.org/10.2737/fpl-rp-633.

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