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SU Jun, QIAN Weimin, GUO Feng, et al. Experimental study on the influence of ultra-low temperature on compressive toughness of ultra high toughness cementitious composites[J]. Acta Materiae Compositae Sinica, 2021, 38(12): 4325-4336. DOI: 10.13801/j.cnki.fhclxb.20210223.002
Citation: SU Jun, QIAN Weimin, GUO Feng, et al. Experimental study on the influence of ultra-low temperature on compressive toughness of ultra high toughness cementitious composites[J]. Acta Materiae Compositae Sinica, 2021, 38(12): 4325-4336. DOI: 10.13801/j.cnki.fhclxb.20210223.002
shu

Experimental study on the influence of ultra-low temperature on compressive toughness of ultra high toughness cementitious composites

  • 1.

    School of Civil Engineering and Environment, Hubei University of Technology, Wuhan 430068, China

  • 2.

    Engineering and Technology College, Hubei University of Technology, Wuhan 430068, China

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  • Received Date: December 17, 2020
  • Accepted Date: February 01, 2021
  • Available Online: February 22, 2021
    Abstract
  • Ultra high toughness cementitious composites (UHTCC) is a new material with ultra-high toughness and good durability. Its compressive toughness index is an important index to evaluate the toughness of UHTCC. 5 groups of UHTCC with different fiber contents were tested under uniaxial compression after ultra-low temperature, and the evaluation index of compressive toughness of UHTCC under ultra-low temperature was studied, and its deformation capacity was equivalent analyzed. The experimental results show that within a certain range, with the increase of fiber content, the compressive strength and toughness of UHTCC are significantly improved, but beyond the optimal content range, the performances are not improved, but are slightly decreased; ultra-low temperature has a certain improvement on the compressive strength of UHTCC, when the temperature is reduced to −196℃, the axial compressive strength can be increased by 74.42%, but it shows obvious fragility.
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