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Mechanical properties of cement mortar in sodium sulfate and sodium chloride solutions

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Abstract

To investigate the mechanical properties of cement mortar in sodium sulfate and sodium chloride solutions, uniaxial compression test and ultrasonic test were performed. Test results show that the relative dynamic elastic modulus, the mass variation, and the compressive strength of cement mortar increase first, and then decrease with increasing erosion time in sodium sulfate and sodium chloride solutions. The relative dynamic elastic moduli and the compressive strengths of cement mortars with water/cement ratios of 0.55 and 0.65 in sodium sulfate solution are lower than those in sodium chloride solution with the same concentration at the 420th day of immersion. The compressive strength of cement mortar with water/cement ratio of 0.65 is more sensitive to strain rate than that with water/cement ratio of 0.55. In addition, the strain-rate sensitivity of compressive strength of cement mortar will increase under attacks of sodium sulfate or sodium chloride solution.

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Authors and Affiliations

  1. Faculty of Architectural, Civil Engineering and Environment, Ningbo University, Ningbo, 315211, China

    Liang-xiao Xiong  (熊良宵)

  2. State Key Laboratory of Geohazard Prevention and Geoenvironment Protection, Chengdu University of Technology, Chengdu, 610059, China

    Liang-xiao Xiong  (熊良宵)

  3. Zhejiang Geotechnical and Foundation Company, Ningbo, 315040, China

    Li-jun Yu  (虞利军)

Authors
  1. Liang-xiao Xiong  (熊良宵)
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  2. Li-jun Yu  (虞利军)
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Correspondence to Liang-xiao Xiong  (熊良宵).

Additional information

Foundation item: Project(LY13E080021) supported by the Natural Science Foundation of Zhejiang Province, China; Project(2011A610072) supported by the Ningbo Municipal Natural Science Foundation, China; Project(XKL14D2063) supported by Subject Program of Ningbo University, China

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Xiong, Lx., Yu, Lj. Mechanical properties of cement mortar in sodium sulfate and sodium chloride solutions. J. Cent. South Univ. 22, 1096–1103 (2015). https://doi.org/10.1007/s11771-015-2621-8

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  • DOI: https://doi.org/10.1007/s11771-015-2621-8

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