Abstract: The selection of model material is critical in the physical analogy of geomaterials in small scale testing. After a review of the previous research results of selecting analogy material in the small scale physical modelling of limestone, this paper presents the physical modeling results using barite powder, bentonite, paraffin oil with different material ratios. The mechanical properties of the analog material are tested and the different material components on the mechanical properties are also discussed. The optimized material components in small scale modelling of limestone are proposed.

Key words: Limestone, Small Scale Model Tests, Analog Materials