Abstract
This paper aims to study the creep properties of potassium magnesium phosphate cement from nanoscale to macroscale. In this paper, nanoindentation technology and statistical deconvolution theory are used to study the creep properties of individual phase in potassium magnesium phosphate cement in the nanoscale. Then, the creep modulus of individual phase in potassium magnesium phosphate cement are determined. Through micro indentation test in this paper, the micro indentation method cannot predict the macro creep properties of potassium magnesium phosphate cement due to its easy cracking property. The compositions and volume fractions of phases in potassium magnesium phosphate cement are determined by XRD, TG and MIP. Based on the homogenization theory and creep parameters of each phase, a theoretical model for predicting and adjusting the creep performance of magnesium phosphate cement is proposed, and by compared with the macro creep data, the accuracy of the model is verified.
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