Crack Extension Resistance of Post-Fire Concrete

Zhou Dao Lu; Ji Feng Chai

doi:10.4028/www.scientific.net/AMR.746.411

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HomeAdvanced Materials ResearchAdvanced Materials Research Vol. 746Crack Extension Resistance of Post-Fire Concrete

Crack Extension Resistance of Post-Fire Concrete

Abstract:

Wedge-splitting test is carried out in present research.Determination of the residual crack extension resistance curves (K_R-curves) associated with cohesive force distribution on fictitious crack zone of complete fracture process is implemented. In each temperature, with the distribution of cohesive force along the fracture process zone, the residual fracture toughness K_R(Δ̱) increases with increasing crack length Δ̱. Whereas the K_R-curves decrease with increasing temperatures T_mfor the thermal damage induced.

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Periodical:

Advanced Materials Research (Volume 746)

Pages:

411-415

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.746.411

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Online since:

August 2013

Authors:

Zhou Dao Lu, Ji Feng Chai

Keywords:

Cohesive Force, Post-Fire, Residual Crack Extension Resistance, Wedge-Splitting Test

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