/npsi/ctrl?lang=en http://nparc.cisti-icist.nrc-cnrc.gc.ca/npsi/ctrl?lang=fr Access and use of this website and the material on it are subject to the Terms and Conditions set forth at http://nparc.cisti-icist.nrc-cnrc.gc.ca/npsi/jsp/nparc_cp.jsp?lang=en NRC Publications Archive Archives des publications du CNRCThis publication could be one of several versions: author's original, accepted manuscript or the publisher's version. / La version de cette publication peut être l'une des suivantes : la version prépublication de l'auteur, la version acceptée du manuscrit ou la version de l'éditeur. For the publisher's version, please access the DOI link below./ Pour consulter la version de l'éditeur, utilisez le lien DOI ci-dessous.http://dx.doi.org/10.1061/(ASCE) 0733-9445(2003)129:2(253) Journal of Structural Engineering, 129, 2, pp. 253-259, 2003-02-01 Effect of strength and fiber reinforcement on fire resistance of highstrength concrete columns Cheng, F. P.; Wang, T. C.; Sultan, M. A. ABSTRACTIn this paper, results from fire resistance experiments on five types of reinforced concrete columns are presented. The variables considered in the study include concrete strength (NSC and HSC), aggregate type (siliceous and carbonate aggregate), and fiber reinforcement (steel and polypropylene fibers). Data from the study is used to determine the structural behaviour of HSC columns at elevated temperatures. A comparison is made of the fire resistance performance of HSC columns with that of normal strength concrete (NSC) and fiber-reinforced HSC columns. The factors that influence the thermal and structural behaviour of HSC concrete columns under fire conditions are discussed. The results show that the fire resistance of a NSC column is higher than that of a HSC column. Also, the addition of polypropylene fibers and the use of carbonate aggregate improve fire resistance.

/npsi/ctrl?lang=en http://nparc.cisti-icist.nrc-cnrc.gc.ca/npsi/ctrl?lang=fr Access and use of this website and the material on it are subject to the Terms and Conditions set forth at http://nparc.cisti-icist.nrc-cnrc.gc.ca/npsi/jsp/nparc_cp.jsp?lang=en NRC Publications Archive Archives des publications du CNRCThis publication could be one of several versions: author's original, accepted manuscript or the publisher's version. / La version de cette publication peut être l'une des suivantes : la version prépublication de l'auteur, la version acceptée du manuscrit ou la version de l'éditeur. For the publisher's version, please access the DOI link below./ Pour consulter la version de l'éditeur, utilisez le lien DOI ci-dessous.http://dx.doi.org/10.1061/(ASCE) 0899-1561(2004)16:1(84) Journal of Materials in Civil Engineering, 16, 1, pp. 84-94, 2004-01-01 Stress-strain curves for high strength concrete at elevated temperatures Cheng, F. P.; Kodur, V. K. R.; Wang, T. C. Abstract:The effects of high temperature on strength and stress-strain relationship of high strength concrete (HSC) were investigated. Stress-strain curve tests were conducted at various temperatures (20, 100, 200, 400, 600 and 800 o C) for four types of HSC. The variables considered in the experimental study included concrete strength, type of aggregate, and the addition of steel fibers.Results from stress-strain curve tests show that plain HSC exhibits brittle properties below 600 o C, and ductility above 600 o C. HSC with steel fibers exhibits ductility for temperatures over 400 o C. The compressive strength of HSC decreases by about a quarter of its room temperature strength within the range of 100-400 o C. The strength further decreases with the increase of temperature and reaches about a quarter of its initial strength at 800 o C. The strain at peak loading increases with temperature; from 0.003 at room temperature to 0.02 at 800 o C. Further, the increase in strains for carbonate aggregate HSC is larger than that for siliceous aggregate HSC.

/npsi/ctrl?lang=en http://nparc.cisti-icist.nrc-cnrc.gc.ca/npsi/ctrl?lang=fr Access and use of this website and the material on it are subject to the Terms and Conditions set forth at http://nparc.cisti-icist.nrc-cnrc.gc.ca/npsi/jsp/nparc_cp.jsp?lang=en NRC Publications Archive Archives des publications du CNRCThis publication could be one of several versions: author's original, accepted manuscript or the publisher's version. / La version de cette publication peut être l'une des suivantes : la version prépublication de l'auteur, la version acceptée du manuscrit ou la version de l'éditeur. For the publisher's version, please access the DOI link below./ Pour consulter la version de l'éditeur, utilisez le lien DOI ci-dessous.http://dx.doi.org/10.1016/S0958-9465(03)00089-1 Composites, 26, 2, pp. 141-153, 2004-02-01 Predicting the fire resistance behaviour of high strength concrete columns Kodur, V. K. R.; Wang, T. C.; Cheng, F. P. Cement and Concrete ABSTRACTA numerical model, in the form of a computer program, for tracing the behaviour of high performance concrete (HPC) columns exposed to fire is presented. The three stages, associated with the thermal and structural analysis, for the calculation of fire resistance of columns are explained. A simplified approach is proposed to account for spalling under fire conditions. The use of the computer program for tracing the response of an HPC column from the initial pre-loading stage to collapse, due to fire, is demonstrated.The validity of the numerical model used in the program is established by comparing the predictions from the computer program with results from full-scale fire resistance tests. Details of fire resistance experiments carried out on HPC columns, together with results, are presented. The computer program can be used to predict the fire resistance of HPC columns for any value of the significant parameters, such as load, section dimensions, fiber reinforcement, column length, concrete strength, aggregate type, and fiber reinforcement.

No abstract

A numerical model, in the form of a computer program, for evaluating the fire resistance of high performance concrete (HPC) columns is presented. The three stages, associated with the thermal and structural analysis, for the calculation of fire resistance of columns is explained. A simplified approach is proposed to account for spalling under fire conditions. The use of the computer program for tracing the response of an HPC column from the initial pre-loading stage to collapse, due to fire, is demonstrated.The validity of the numerical model used in the program is established by comparing the predictions from the computer program with results from full-scale fire resistance tests. Details of fire resistance experiments carried out on HPC columns, together with results, are presented. The computer program can be used to evaluate the fire resistance of HPC columns for any value of the significant parameters, such as load, section dimensions, fiber reinforcement, column length, concrete strength, aggregate type, and fiber reinforcement without the necessity of testing.