Acta Mechanica Solida Sinica

, Volume 26, Issue 1, pp 53–61 | Cite as

Theoretical Analysis on the Nucleation of Micro-Damage in Cement Mortar Under Compressive Loading and Sulfate Attack

Article

Abstract

Effect of uniaxial compression on the nucleation of micro-damage in cement mortar under sulfate attack is investigated. Shape and size of micro-voids in cement mortar is detected using Micro Computed Tomography techniques. The formation of delayed ettringite crystal is analyzed using scanning electron microscope and energy disperse spectrum methods. Deformation of micro-voids and the distribution of stress at the surface of a micro-void are calculated. It is found that the nucleation of micro-cracks is caused by the tensile stress at the voids’ surface, and such damage nucleation will be speeded up by the remote uniaxial compressive load.

Key words

sulfate attack uniaxial compression micro-damage cement mortar Eshelby’s method 

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Copyright information

© The Chinese Society of Theoretical and Applied Mechanics and Technology 2013

Authors and Affiliations

  • Jiankang Chen
    • 1
    • 2
  • Hui Song
    • 1
  • Minghua Zhang
    • 1
  • Jian Ye
    • 3
  1. 1.The Faculty of Mechanical Engineering and MechanicsNingbo UniversityNingboChina
  2. 2.State Key Laboratory of Turbulence and Complex SystemsBeijingChina
  3. 3.Jiangsu Provincial Water Resources DepartmentNanjingChina

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