As cement paste is a fundamental matrix of all cementitious materials,it would be interesting to investigate the fracture processes in cement paste at micro scale.In this paper,two modeling schemes are proposed and applied to analyze the microstructure of cement paste,namely HymLat and ImgLat.In the HymLat scheme,the input microstructure has to be represented by sphere parti-cles,and this restriction is removed in the ImgLat scheme,where all the phases are described in terms of voxels.For both schemes,the microstructure of cement paste is obtained by the simulations using the HYMOSTRUC3D model and the fracture process is simulated by the code GLAK(Generalized Lattice Analysis Kernel).The comparison between these two modeling schemes were made to illustrate the differences in flexibility and computing efficiency.
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