Statistical Damage Constitutive Model for Warm Frozen Clay Considering Effect of Damage Threshold

Xu, Hongfa; Geng, Hansheng; Chen, Xiao; Bai, Zhun

doi:10.1007/978-981-10-6632-0_7

Cited by 2 publications

(2 citation statements)

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“…Furthermore, owing to its solid foundation for irreversible thermodynamics and relevant consideration of physical mechanisms, continuum damage mechanics serves as an effective method to the research of the stress-strain relationships of concrete and rock in a comprehensive way [21][22][23][24][25][26]. Xue et al [27] introduced the damage threshold parameters and established a damage constitutive model of steel fiber-reinforced concrete reflecting the linear elastic behavior under low stress. erefore, damage mechanics can be used to derive the constitutive model of HDC.…”

Section: Introductionmentioning

confidence: 99%

“…e toughness and deformability of HDC under uniaxial compression can be significantly improved for the lateral restraint effect of the fiber bridging stress inside the matrix, which has obvious difference with concrete [1]. e researchers [21][22][23][24][25][26][27] primarily focused on the concrete and steel fiber-reinforced concrete, both of which can be classified as a brittle material. Consequently, their models are unable to reflect the damage accumulation and constitutive relationship of HDC under the uniaxial compressive stress state.…”

Section: Introductionmentioning

confidence: 99%

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Uniaxial Compressive Test of High Ductile Fiber‐Reinforced Concrete and Damage Constitutive Model

Deng

Pan

Liang

2018

Advances in Civil Engineering

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It has been widely recognized that the constitutive model plays an essential role in engineering application of high ductile fiberreinforced concrete (HDC). In this research, uniaxial compressive tests were conducted on nine groups of HDC specimens with different mixture ratios and one group of mortar matrix specimens as comparison, discussing the effect of fiber content, watercement ratio, fly ash content, and sand-binder ratio. According to the characteristics of stress-strain curve of HDC under uniaxial compression, a damage constitutive model was proposed by introducing two damage threshold parameters and then was compared with other existing models. Results indicated that the damage model curves suggested in this paper were best consistent with experimental curves and substantially demonstrate the damage evolution process as well as the cracking resistance effect of fiber bridging stress.

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