Experimental study on dynamic behaviours of concrete after exposure to high temperatures up to 700 °C
A Split Hopkinson pressure bar were used to experimentally study the dynamic behaviours of normal-strength concrete after exposure to elevated temperatures up to 700 °C. The dynamic strength and stress–strain relation curves of fire-damaged concrete were measured to unveil the effects of high temper...
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| Veröffentlicht in: | Materials and structures 2013, Vol.46 (1-2), p.255-265 |
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| creator | Huo, J. S. He, Y. M. Xiao, L. P. Chen, B. S. |
| description | A Split Hopkinson pressure bar were used to experimentally study the dynamic behaviours of normal-strength concrete after exposure to elevated temperatures up to 700 °C. The dynamic strength and stress–strain relation curves of fire-damaged concrete were measured to unveil the effects of high temperature and strain rate on the dynamic behaviours of fire-damaged concrete. Test results showed that fire-damaged concrete still experienced remarkable strain rate effect and the dynamic stress versus strain relations of fire-damaged concrete were significantly different from those of concrete at room temperature. There was no obvious effect of temperature and strain rate on the shape of the ascending branches of normalized stress–strain relation curves of concrete after exposure to high temperatures. The tested results also showed that high temperature and strain rate had remarkable effect on the dynamic increase factor (DIF) for the fire-damaged concrete. The effect of high temperature on DIF of the fire-damaged concrete decreased as the temperature increased. The tested results can be a basis for assessing the impact resistance and anti-collapse resistance of fire-damaged concrete structures. |
| doi_str_mv | 10.1617/s11527-012-9899-x |
| format | Article |
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S. ; He, Y. M. ; Xiao, L. P. ; Chen, B. S.</creator><creatorcontrib>Huo, J. S. ; He, Y. M. ; Xiao, L. P. ; Chen, B. S.</creatorcontrib><description>A Split Hopkinson pressure bar were used to experimentally study the dynamic behaviours of normal-strength concrete after exposure to elevated temperatures up to 700 °C. The dynamic strength and stress–strain relation curves of fire-damaged concrete were measured to unveil the effects of high temperature and strain rate on the dynamic behaviours of fire-damaged concrete. Test results showed that fire-damaged concrete still experienced remarkable strain rate effect and the dynamic stress versus strain relations of fire-damaged concrete were significantly different from those of concrete at room temperature. There was no obvious effect of temperature and strain rate on the shape of the ascending branches of normalized stress–strain relation curves of concrete after exposure to high temperatures. The tested results also showed that high temperature and strain rate had remarkable effect on the dynamic increase factor (DIF) for the fire-damaged concrete. The effect of high temperature on DIF of the fire-damaged concrete decreased as the temperature increased. The tested results can be a basis for assessing the impact resistance and anti-collapse resistance of fire-damaged concrete structures.</description><identifier>ISSN: 1359-5997</identifier><identifier>EISSN: 1871-6873</identifier><identifier>DOI: 10.1617/s11527-012-9899-x</identifier><language>eng</language><publisher>Dordrecht: Springer Netherlands</publisher><subject>Applied sciences ; Building construction ; Building Materials ; Building technical equipments ; Buildings ; Buildings. Public works ; Civil Engineering ; Concretes. Mortars. 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There was no obvious effect of temperature and strain rate on the shape of the ascending branches of normalized stress–strain relation curves of concrete after exposure to high temperatures. The tested results also showed that high temperature and strain rate had remarkable effect on the dynamic increase factor (DIF) for the fire-damaged concrete. The effect of high temperature on DIF of the fire-damaged concrete decreased as the temperature increased. The tested results can be a basis for assessing the impact resistance and anti-collapse resistance of fire-damaged concrete structures.</description><subject>Applied sciences</subject><subject>Building construction</subject><subject>Building Materials</subject><subject>Building technical equipments</subject><subject>Buildings</subject><subject>Buildings. Public works</subject><subject>Civil Engineering</subject><subject>Concretes. Mortars. Grouts</subject><subject>Engineering</subject><subject>Exact sciences and technology</subject><subject>Fire behavior of materials and structures</subject><subject>Fire protection</subject><subject>General (composition, classification, performance, standards, patents, etc.)</subject><subject>Machines</subject><subject>Manufacturing</subject><subject>Materials</subject><subject>Materials Science</subject><subject>Original Article</subject><subject>Processes</subject><subject>Solid Mechanics</subject><subject>Strength of materials (elasticity, plasticity, buckling, etc.)</subject><subject>Structural analysis. 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| subjects | Applied sciences Building construction Building Materials Building technical equipments Buildings Buildings. Public works Civil Engineering Concretes. Mortars. Grouts Engineering Exact sciences and technology Fire behavior of materials and structures Fire protection General (composition, classification, performance, standards, patents, etc.) Machines Manufacturing Materials Materials Science Original Article Processes Solid Mechanics Strength of materials (elasticity, plasticity, buckling, etc.) Structural analysis. Stresses Theoretical and Applied Mechanics |
| title | Experimental study on dynamic behaviours of concrete after exposure to high temperatures up to 700 °C |
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