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Effect of pressure on the crystal structure of ettringite

  • Author(s): Clark, Simon M.
  • Colas, Bruno
  • Kunz, Martin
  • Speziale, Sergio
  • Monteiro, Paulo J.M.
  • et al.
Abstract

X-ray diffraction and infrared data have been collected from a sample of ettringite from ambient pressure to 6.4 GPa. The sample was found to reversibly transform to an amorphous phase at 3 GPa. The isothermal bulk modulus of ettringite was found to be 27(7) GPa and the incompressibilities of the lattice parameters were found to be 71(30) GPa along a and 108(36) GPa along c.

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