{"title":"Effect of Fiber Types and Elevated Temperatures on the Bond Characteristic of Fiber Reinforced Concretes","authors":"Erdo\u011fan \u00d6zbay, Hakan T. T\u00fcrker, M\u00fczeyyen Bal\u00e7\u0131kanl\u0131, Mohamed Lachemi","volume":101,"journal":"International Journal of Civil and Environmental Engineering","pagesStart":549,"pagesEnd":554,"ISSN":"1307-6892","URL":"https:\/\/publications.waset.org\/pdf\/10001210","abstract":"
In this paper, the effects of fiber types and elevated
\r\ntemperatures on compressive strength, modulus of rapture and the
\r\nbond characteristics of fiber reinforced concretes (FRC) are
\r\npresented. By using the three different types of fibers (steel fiber-SF,
\r\npolypropylene-PPF and polyvinyl alcohol-PVA), FRC specimens
\r\nwere produced and exposed to elevated temperatures up to 800 ºC for
\r\n1.5 hours. In addition, a plain concrete (without fiber) was produced
\r\nand used as a control. Test results obtained showed that the steel fiber
\r\nreinforced concrete (SFRC) had the highest compressive strength,
\r\nmodulus of rapture and bond stress values at room temperatures, the
\r\nresidual bond, flexural and compressive strengths of both FRC and
\r\nplain concrete dropped sharply after exposure to high temperatures.
\r\nThe results also indicated that the reduction of bond, flexural and
\r\ncompressive strengths with increasing the exposed temperature was
\r\nrelatively less for SFRC than for plain, and FRC with PPF and PVA.<\/p>\r\n","references":"[1] L. Biolzi, S. Cattaneo, and G. Rosati, \u201cEvaluating residual properties of\r\nthermally damaged concrete,\u201d Cement & Concrete Composites, 30, 907\u2013\r\n916, 2008.\r\n[2] H. L. Malhotra, \u201cThe effect of temperature on the compressive strength\r\nof concrete,\u201d Magazine of Concrete Research, 8(22), 85\u201394, 1956.\r\n[3] U. Schneider, \u201cConcrete at high temperatures \u2013 a general review,\u201d Fire\r\nSafety Journal, 13(1), 55\u201368, 1988.\r\n[4] L. T. Phan, and N. J. Carino, \u201cReview of mechanical properties of HSC\r\nat elevated temperature,\u201d Journal of Materials in Civil Engineering,\r\n10(1), 58\u201364, 1998.\r\n[5] C. Castillo, and A. J. Durrani, \u201cEffect of transient high temperature on\r\nhigh strength concrete,\u201d ACI Materials Journal, 87(1), 47\u201353, 1990.\r\n[6] I. Janotka, and S. C. Mojumdar, \u201cThermal analysis at the evaluation of\r\nconcrete damage by high temperatures,\u201d Journal of Thermal Analysis\r\nand Calorimetry, 81(1), 197\u2013203, 2005.\r\n[7] J. P. C. Rodrigues, L. Laim, and A. M. Correia, \u201cBehaviour of fiber\r\nreinforced concrete columns in fire,\u201d Composite Structures, 92, 1263\u2013\r\n1268, 2010.\r\n[8] P. Kalifa, G. Ch\u00e9n\u00e9, and C. Gall\u00e9, \u201cHigh-temperature behaviour of HPC\r\nwith polypropylene fibers from spalling to microstructure,\u201d Cement and\r\nConcrete Research, 31(10), 1487\u201399, 2001.\r\n[9] A. Lau, and M. Anson, \u201cEffect of high temperatures on high\r\nperformance steel fiber reinforced concrete,\u201d Cement and Concrete\r\nResearch, 36, 1698\u20131707, 2006.\r\n[10] M. Haskett, D. J. Oehlers, and M. S. M. Ali, \u201cLocal and global bond\r\ncharacteristics of steel reinforcing bars,\u201d Engineering Structures, 30,\r\n376\u2013383, 2008.\r\n[11] S. Cattaneo, and G. Rosati, \u201cBond between Steel and Self-Consolidating\r\nConcrete: Experiments and Modeling,\u201d ACI Structural Journal, vol.\r\n106, No. 4, 540-550, July-August 2009.\r\n[12] R. H. Haddad, R. J. Al-Saleh, and N.M. Al-Akhras, \u201cEffect of elevated\r\ntemperature on bond between steel reinforcement and fiber reinforced\r\nconcrete,\u201d Fire Safety Journal, 43 334\u2013343, 2008.\r\n[13] E. Ozbay, F. Cassagnebere, and M. Lachemi, \u201cEffects of fiber types on\r\nthe fresh and rheological properties of self-compacting concretes,\u201d\r\nSCC2010 conference, 26-30 September, Montreal, Canada, 2010.","publisher":"World Academy of Science, Engineering and Technology","index":"Open Science Index 101, 2015"}