{"title":"\"Trends in Fire Testing, Research, and Standards for Concrete\"","authors":"S. Szoke","doi":"10.14359/20226","DOIUrl":"https://doi.org/10.14359/20226","url":null,"abstract":"","PeriodicalId":309489,"journal":{"name":"SP-255: Designing Concrete Structures for Fire Safety","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129803571","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Post-Fire Deterioration and Prestress Loss in Steel Tendons used in Post-Tensioned Slabs","authors":"K. MacLean, L. Bisby, C. Macdougall","doi":"10.14359/20223","DOIUrl":"https://doi.org/10.14359/20223","url":null,"abstract":"","PeriodicalId":309489,"journal":{"name":"SP-255: Designing Concrete Structures for Fire Safety","volume":"67 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126311633","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"High Strength Concrete at High Temperature","authors":"L. Phan","doi":"10.14359/20217","DOIUrl":"https://doi.org/10.14359/20217","url":null,"abstract":"","PeriodicalId":309489,"journal":{"name":"SP-255: Designing Concrete Structures for Fire Safety","volume":"78 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124801948","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
A hydrocarbon fire test was conducted on nine concrete slabs incorporating three different types of binders: 100% ordinary portland cement (OPC), 50% OPC, and 50% ground-granulated blast-furnace slag (GGBFS), and alkali-activated slag (AAS). The specimens (780 mm [30.71 in.] x 360 mm [14.17 in.]) were made with three different thicknesses (100 mm [3.94 in.], 200 mm [7.87 in.] and 400 mm [15.75 in.]). Specimens were tested at an age of six months when the strengths were about 75 MPa (10,877 psi). The specimens were exposed to the hydrocarbon fire on one side. Explosive spalling only occurred in the 400 mm (15.75 in.) AAS concrete specimen that had a lower moisture content and higher permeability than the OPC and OPC/slag concretes. This suggests that the well-renowned moisture clog theory is unlikely to be a predominant mechanism of spalling in AAS concrete. It is speculated that high thermal gradients caused explosive spalling in the AAS concrete specimen
在9块混凝土板上进行了碳氢化合物燃烧测试，其中包含三种不同类型的粘合剂:100%普通硅酸盐水泥(OPC)， 50% OPC, 50%磨粒高炉渣(GGBFS)和碱活性渣(AAS)。样品长780毫米(30.71英寸)。] x 360毫米[14.17英寸])，由三种不同的厚度(100毫米[3.94英寸])制成。， 200毫米[7.87英寸]。]和400毫米[15.75英寸])。试件在6个月大时进行测试，强度约为75 MPa (10,877 psi)。标本的一侧被暴露在碳氢化合物火中。爆炸剥落只发生在400毫米(15.75英寸)与OPC和OPC/矿渣混凝土相比，AAS混凝土试样具有更低的含水率和更高的渗透率。这表明，众所周知的水分堵塞理论不太可能是AAS混凝土中剥落的主要机制。推测高热梯度是引起AAS混凝土试样爆炸剥落的主要原因
{"title":"Effect of Slag on the Performance of Concretes in Hydrocarbon Fire","authors":"M. Guerrieri, J. Sanjayan, F. Collins","doi":"10.14359/20218","DOIUrl":"https://doi.org/10.14359/20218","url":null,"abstract":"A hydrocarbon fire test was conducted on nine concrete slabs incorporating three different types of binders: 100% ordinary portland cement (OPC), 50% OPC, and 50% ground-granulated blast-furnace slag (GGBFS), and alkali-activated slag (AAS). The specimens (780 mm [30.71 in.] x 360 mm [14.17 in.]) were made with three different thicknesses (100 mm [3.94 in.], 200 mm [7.87 in.] and 400 mm [15.75 in.]). Specimens were tested at an age of six months when the strengths were about 75 MPa (10,877 psi). The specimens were exposed to the hydrocarbon fire on one side. Explosive spalling only occurred in the 400 mm (15.75 in.) AAS concrete specimen that had a lower moisture content and higher permeability than the OPC and OPC/slag concretes. This suggests that the well-renowned moisture clog theory is unlikely to be a predominant mechanism of spalling in AAS concrete. It is speculated that high thermal gradients caused explosive spalling in the AAS concrete specimen","PeriodicalId":309489,"journal":{"name":"SP-255: Designing Concrete Structures for Fire Safety","volume":"32 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133813545","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Comparisons of Fire Resistance of RC Beams from Different Codes of Practice","authors":"Monther B. Dwaikat, V. Kodur","doi":"10.14359/20222","DOIUrl":"https://doi.org/10.14359/20222","url":null,"abstract":"","PeriodicalId":309489,"journal":{"name":"SP-255: Designing Concrete Structures for Fire Safety","volume":"47 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123599860","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Fire Resistance of Reinforced Concrete Columns - State-of-the-Art and Research Needs","authors":"V. Kodur, Nikhil Raut","doi":"10.14359/20221","DOIUrl":"https://doi.org/10.14359/20221","url":null,"abstract":"","PeriodicalId":309489,"journal":{"name":"SP-255: Designing Concrete Structures for Fire Safety","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121244081","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Connections on Hollow-Core Floor Systems for Enhanced Fire Performance","authors":"J. Chang, R. Dhakal, P. Moss, A. Buchanan","doi":"10.14359/20224","DOIUrl":"https://doi.org/10.14359/20224","url":null,"abstract":"","PeriodicalId":309489,"journal":{"name":"SP-255: Designing Concrete Structures for Fire Safety","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125389354","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Synopsis: Whereas traditionally the verification of fire safety is based on prescriptive measures and criteria, an evolution toward performance-based design can be noticed, which is reflected in the design approaches given in the fire parts of Eurocodes 1 and 2. In Part 1-2 of Eurocode 11, general design aspects of structures exposed to fire are given as well as specific load combinations, design values of thermal and mechanical material properties, fire models, and heat transfer models. Most of these design principles are applicable to all types of construction materials. In Part 1-2 of Eurocode 22, specific approaches related to concrete structures are given, i.e., models giving the influence of high temperatures on material characteristics, a method based on tabulated values, simplified verification methods, and the basic principles of advanced calculation methods. In this paper, a review is presented of the most relevant clauses of the mentioned documents. For practical applications, the complete documents should be consulted.
{"title":"Fire Design of Concrete Structures According to the Eurocodes: A Review","authors":"L. Taerwe","doi":"10.14359/20220","DOIUrl":"https://doi.org/10.14359/20220","url":null,"abstract":"Synopsis: Whereas traditionally the verification of fire safety is based on prescriptive measures and criteria, an evolution toward performance-based design can be noticed, which is reflected in the design approaches given in the fire parts of Eurocodes 1 and 2. In Part 1-2 of Eurocode 11, general design aspects of structures exposed to fire are given as well as specific load combinations, design values of thermal and mechanical material properties, fire models, and heat transfer models. Most of these design principles are applicable to all types of construction materials. In Part 1-2 of Eurocode 22, specific approaches related to concrete structures are given, i.e., models giving the influence of high temperatures on material characteristics, a method based on tabulated values, simplified verification methods, and the basic principles of advanced calculation methods. In this paper, a review is presented of the most relevant clauses of the mentioned documents. For practical applications, the complete documents should be consulted.","PeriodicalId":309489,"journal":{"name":"SP-255: Designing Concrete Structures for Fire Safety","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127654258","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
One of the new techniques to reduce explosive spalling in concrete subjected to fire is to add a cocktail of polypropylene fibers and steel fibers into the concrete mixture. This method is still in the early stages of development and requires more research to investigate the efficiency of introducing such a combination of fibers in reducing explosive spalling in fire. The purpose of this paper is to present the results of an experimental study conducted to investigate the performance of reinforced concrete columns containing steel and polypropylene fibers under different loadings and subjected to severe fire conditions. Two loading levels were investigated representing 0.6 and 0.76 of the ultimate strength limits of ACI 318. Columns containing polypropylene (1 kg/m3) and steel fibers (80kg/m3) showed a higher fire resistance by an average factor of 1.76 compared to columns containing PP fibers (1 kg/m3) only. The paper also assesses the effect of adding steel and polypropylene fibers on the severity of concrete explosion under fire. Measurements of axial displacements and concrete temperatures are presented in this paper. The paper compares the obtained experimental values of the axial displacements with theoretical values calculated using a previously developed simple approach. (13 refs.)
{"title":"Fire Resistance of Concrete Columns Containing Polypropylene and Steel Fibers","authors":"F. Ali, A. Nadjai","doi":"10.14359/20225","DOIUrl":"https://doi.org/10.14359/20225","url":null,"abstract":"One of the new techniques to reduce explosive spalling in concrete subjected to fire is to add a cocktail of polypropylene fibers and steel fibers into the concrete mixture. This method is still in the early stages of development and requires more research to investigate the efficiency of introducing such a combination of fibers in reducing explosive spalling in fire. The purpose of this paper is to present the results of an experimental study conducted to investigate the performance of reinforced concrete columns containing steel and polypropylene fibers under different loadings and subjected to severe fire conditions. Two loading levels were investigated representing 0.6 and 0.76 of the ultimate strength limits of ACI 318. Columns containing polypropylene (1 kg/m3) and steel fibers (80kg/m3) showed a higher fire resistance by an average factor of 1.76 compared to columns containing PP fibers (1 kg/m3) only. The paper also assesses the effect of adding steel and polypropylene fibers on the severity of concrete explosion under fire. Measurements of axial displacements and concrete temperatures are presented in this paper. The paper compares the obtained experimental values of the axial displacements with theoretical values calculated using a previously developed simple approach. (13 refs.)","PeriodicalId":309489,"journal":{"name":"SP-255: Designing Concrete Structures for Fire Safety","volume":"36 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122996048","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Flexural Behavior of Protected Concrete Slabs after Fire Exposure","authors":"Maged A. Youssef, S. El-Fitiany, M. Elfeki","doi":"10.14359/20219","DOIUrl":"https://doi.org/10.14359/20219","url":null,"abstract":"","PeriodicalId":309489,"journal":{"name":"SP-255: Designing Concrete Structures for Fire Safety","volume":"105 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124756498","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
京公网安备 11010802042870号
京ICP备2023020795号-1
扫码关注我们
求助内容：
应助结果提醒方式：