Improving the high performance concrete (HPC) behaviour in high temperatures
High performance concrete (HPC) is an interesting material that has been long attracting the interest from the scientific and technical community, due to the clear advantages obtained in terms of mechanical strength and durability. Given these better characteristics, HFC, in its various forms, has b...
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| Format: | Article |
| Language: | English |
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Consejo Superior de Investigaciones Científicas
2003-12-01
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| Series: | Materiales de Construccion |
| Subjects: | |
| Online Access: | http://materconstrucc.revistas.csic.es/index.php/materconstrucc/article/view/285 |
| _version_ | 1818940848215162880 |
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| author | R. Cattelan Antocheves De Lima L. C. Pinto Da Silva Filho C. A. Casonato |
| author_facet | R. Cattelan Antocheves De Lima L. C. Pinto Da Silva Filho C. A. Casonato |
| author_sort | R. Cattelan Antocheves De Lima |
| collection | DOAJ |
| description | High performance concrete (HPC) is an interesting material that has been long attracting the interest from the scientific and technical community, due to the clear advantages obtained in terms of mechanical strength and durability. Given these better characteristics, HFC, in its various forms, has been gradually replacing normal strength concrete, especially in structures exposed to severe environments. However, the veiy dense microstructure and low permeability typical of HPC can result in explosive spalling under certain thermal and mechanical conditions, such as when concrete is subject to rapid temperature rises, during a f¡re. This behaviour is caused by the build-up of internal water pressure, in the pore structure, during heating, and by stresses originating from thermal deformation gradients. Although there are still a limited number of experimental programs in this area, some researchers have reported that the addition of polypropylene fibers to HPC is a suitable way to avoid explosive spalling under f re conditions. This change in behavior is derived from the fact that polypropylene fibers melt in high temperatures and leave a pathway for heated gas to escape the concrete matrix, therefore allowing the outward migration of water vapor and resulting in the reduction of interned pore pressure. The present research investigates the behavior of high performance concrete on high temperatures, especially when polypropylene fibers are added to the mix. |
| first_indexed | 2024-12-20T06:46:09Z |
| format | Article |
| id | doaj.art-9e652827f0af4e40878af40b27cb6822 |
| institution | Directory Open Access Journal |
| issn | 0465-2746 1988-3226 |
| language | English |
| last_indexed | 2024-12-20T06:46:09Z |
| publishDate | 2003-12-01 |
| publisher | Consejo Superior de Investigaciones Científicas |
| record_format | Article |
| series | Materiales de Construccion |
| spelling | doaj.art-9e652827f0af4e40878af40b27cb68222022-12-21T19:49:41ZengConsejo Superior de Investigaciones CientíficasMateriales de Construccion0465-27461988-32262003-12-0153271-272172610.3989/mc.2003.v53.i271-272.285272Improving the high performance concrete (HPC) behaviour in high temperaturesR. Cattelan Antocheves De Lima0L. C. Pinto Da Silva Filho1C. A. Casonato2Laboratorio de Ensayos v Modelos Estrucíurales-LE.ME. Universidad Federal de Rio Grande del Sur-UFRGSLaboratorio de Ensayos v Modelos Estrucíurales-LE.ME. Universidad Federal de Rio Grande del Sur-UFRGSLaboratorio de Ensayos v Modelos Estrucíurales-LE.ME. Universidad Federal de Rio Grande del Sur-UFRGSHigh performance concrete (HPC) is an interesting material that has been long attracting the interest from the scientific and technical community, due to the clear advantages obtained in terms of mechanical strength and durability. Given these better characteristics, HFC, in its various forms, has been gradually replacing normal strength concrete, especially in structures exposed to severe environments. However, the veiy dense microstructure and low permeability typical of HPC can result in explosive spalling under certain thermal and mechanical conditions, such as when concrete is subject to rapid temperature rises, during a f¡re. This behaviour is caused by the build-up of internal water pressure, in the pore structure, during heating, and by stresses originating from thermal deformation gradients. Although there are still a limited number of experimental programs in this area, some researchers have reported that the addition of polypropylene fibers to HPC is a suitable way to avoid explosive spalling under f re conditions. This change in behavior is derived from the fact that polypropylene fibers melt in high temperatures and leave a pathway for heated gas to escape the concrete matrix, therefore allowing the outward migration of water vapor and resulting in the reduction of interned pore pressure. The present research investigates the behavior of high performance concrete on high temperatures, especially when polypropylene fibers are added to the mix.http://materconstrucc.revistas.csic.es/index.php/materconstrucc/article/view/285high performance concretehigh temperaturefirepolypropylene fiber |
| spellingShingle | R. Cattelan Antocheves De Lima L. C. Pinto Da Silva Filho C. A. Casonato Improving the high performance concrete (HPC) behaviour in high temperatures Materiales de Construccion high performance concrete high temperature fire polypropylene fiber |
| title | Improving the high performance concrete (HPC) behaviour in high temperatures |
| title_full | Improving the high performance concrete (HPC) behaviour in high temperatures |
| title_fullStr | Improving the high performance concrete (HPC) behaviour in high temperatures |
| title_full_unstemmed | Improving the high performance concrete (HPC) behaviour in high temperatures |
| title_short | Improving the high performance concrete (HPC) behaviour in high temperatures |
| title_sort | improving the high performance concrete hpc behaviour in high temperatures |
| topic | high performance concrete high temperature fire polypropylene fiber |
| url | http://materconstrucc.revistas.csic.es/index.php/materconstrucc/article/view/285 |
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