The continuing development of the multi-phase material concrete leads to an increased demand for the optimization of diamond impregnated tools. Because of high initial investment costs for diamond tools, not only the reduction of processing time, but also the reduction of tool wear is in the focus of interest. While some parameters like cutting speed can be controlled, other important parameters like the number of cutting diamonds are beyond our influence. To manage this randomness, simulation models for diamond and segment grinding are developed. In this work we will present two models for a segment grinding simulation. The first model is an extension of the simulation model proposed by Raabe et al. (2011) for single diamond scratching on basalt. Beside the goodness-of-fit, the simulation time is an essential factor in the development and choice of simulation models. The difficulties encountered while extending this model are discussed and we provide a solution to accelerate the workpiece simulation. In order to achieve a further reduction of simulation time, a second model is introduced under the assumption of pyramidal shaped dia ... mehrmonds. The simulation results are compared with single diamond experimental data and a feasibility study is performed for the segment setup.