An Approach for Assessment of Fire-affected Concrete Structures From In-situ Test Results
IR@SERC: CSIR-Structural Engineering Research Centre, Chennai
View Archive Info| Field | Value | |
| Title |
An Approach for Assessment of Fire-affected Concrete Structures From In-situ Test Results
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| Creator |
Sreenath, H.G.
Annamalai, S. Chellappan, A. Srinivasan, P. Mani, K. |
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| Subject |
Fire-affected
Concrete structures In-situ test results |
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| Description |
Large number of structures are built in reinforced and prestressed concrete because of the adaptability of concrete to functional needs, economy, minimal maintenance, aesthestic acceptability, protection against corrosive environments, and most importantly resistance against moderate fire. In the event of fire in a reinforced concrete structure the, damage to the structure depends on the intensity and duration of fire. Generally, the fire is brought under control quickly and in most of the cases, the structure can easily be repaired. When the concrete structural elements are subjected to a temperature of 600'c during fire and are exposed for a longer duration, considerable deterioration occurs. This deterioration includes, loss of strength in concrete, partial collapse, distortion, buckling of reinforcing steel, spalling and disintegration of concrete matrix, etc. The decision as to whether the fire damaged structure could be repaired and reused, depends on the temperature and the duration of fire, properties of concrete and steel, residual strength of concrete elements affected by fire, etc. In order to determine the various parameters required for analysis and to arrive at suitable repair measures, systematic and scientific in-situ investigations, and laboratory tests on samples from fire affected structure, are necessary. The paper attempts to outline an approach to investigate a fire-affected structure by adopting suitable in-situ tests. The analysis and interpretation of test results from ultrasonic scanning and core samples are highlighted with examples.
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| Date |
2009
2009 1993 |
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| Type |
Journal article
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| Identifier |
Journal of Structural Engineering, Vol.20, No.2, July 1993, p.91-102
http://hdl.handle.net/123456789/322 |
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| Language |
en
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| Rights |
It is tried to respect the rights of the copyright holders to the best of the knowledge. If it is brought to our notice that the rights are violated then the item would be withdrawn.
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| Publisher |
Structural Engineering Research Center, Chennai
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