Determination of Residual Fracture Toughness of Post-Fire Concrete

Rui Zhang; Zhou Dao Lu; Jiang Tao Yu

doi:10.4028/www.scientific.net/AMR.712-715.1062

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 712-715Determination of Residual Fracture Toughness of...

Determination of Residual Fracture Toughness of Post-Fire Concrete

Abstract:

Determination of double-K fracture parameter using both analytical and weight function method is carried out in present research. In calculating the cohesive fracture toughness, two situations are divided at critical load. Wedge-splitting tests with ten temperatures varying from 20oC to 600oC are implemented. The complete load-crack opening displacement curves are obtained from which the initial and critical fracture toughness could be calculated experimentally. The validation of double-K fracture model to the post-fire concrete specimens is proved. Meanwhile the weight function method agrees well with the analytical method.

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Periodical:

Advanced Materials Research (Volumes 712-715)

Pages:

1062-1066

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.712-715.1062

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Online since:

June 2013

Authors:

Rui Zhang, Zhou Dao Lu, Jiang Tao Yu

Keywords:

Analytical Method, Double-K Fracture Parameter, Post-Fire Concrete, Weight Function Method

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