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A platform for research: civil engineering, architecture and urbanism
Effect of elevated temperatures on the residual durability-related performance of concrete
https://orcid.org/http://orcid.org/0000-0002-8427-2892
This paper evaluates the effect of temperatures up to 500 °C on the residual values (i.e. after cooling) of durability-related properties of concrete, namely, the chloride diffusion coefficient and the accelerated carbonation resistance. It is shown that elevated temperatures can be more detrimental to the durability of concrete than to its mechanical performance. Major losses of durability-related performance are found in concrete heated at temperatures considerably lower than the limiting temperature established by design codes and repair guidelines to distinguish sound from fire-damaged concrete. The results obtained in this work suggest that this temperature should be set somewhere between 100 and 200 °C. The UPV test with exponential transducers shows a suitable sensitivity to losses of durability-related performance in thermally-damaged concrete. It is reasoned that, for inspection purposes, UPV tests should be performed on water-saturated specimens with a minimum of four UPV readings taken on both sound and fire-damaged concrete, with a view to detect fire-damaged concrete in single cores drilled from structures.
Effect of elevated temperatures on the residual durability-related performance of concrete
https://orcid.org/http://orcid.org/0000-0002-8427-2892
This paper evaluates the effect of temperatures up to 500 °C on the residual values (i.e. after cooling) of durability-related properties of concrete, namely, the chloride diffusion coefficient and the accelerated carbonation resistance. It is shown that elevated temperatures can be more detrimental to the durability of concrete than to its mechanical performance. Major losses of durability-related performance are found in concrete heated at temperatures considerably lower than the limiting temperature established by design codes and repair guidelines to distinguish sound from fire-damaged concrete. The results obtained in this work suggest that this temperature should be set somewhere between 100 and 200 °C. The UPV test with exponential transducers shows a suitable sensitivity to losses of durability-related performance in thermally-damaged concrete. It is reasoned that, for inspection purposes, UPV tests should be performed on water-saturated specimens with a minimum of four UPV readings taken on both sound and fire-damaged concrete, with a view to detect fire-damaged concrete in single cores drilled from structures.
Effect of elevated temperatures on the residual durability-related performance of concrete
https://orcid.org/http://orcid.org/0000-0002-8427-2892
This paper evaluates the effect of temperatures up to 500 °C on the residual values (i.e. after cooling) of durability-related properties of concrete, namely, the chloride diffusion coefficient and the accelerated carbonation resistance. It is shown that elevated temperatures can be more detrimental to the durability of concrete than to its mechanical performance. Major losses of durability-related performance are found in concrete heated at temperatures considerably lower than the limiting temperature established by design codes and repair guidelines to distinguish sound from fire-damaged concrete. The results obtained in this work suggest that this temperature should be set somewhere between 100 and 200 °C. The UPV test with exponential transducers shows a suitable sensitivity to losses of durability-related performance in thermally-damaged concrete. It is reasoned that, for inspection purposes, UPV tests should be performed on water-saturated specimens with a minimum of four UPV readings taken on both sound and fire-damaged concrete, with a view to detect fire-damaged concrete in single cores drilled from structures.
Effect of elevated temperatures on the residual durability-related performance of concrete
Mater Struct
Valente Monteiro, André (author) / Vieira, Manuel (author)
2021-12-01
Article (Journal)
Electronic Resource
English
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