大理石的物理特性:1.物理性稳定，组织缜密，受撞击晶粒脱落，表面不起毛边，不影响其平面精度，材质稳定，能够保证长期不变形，线膨胀系数小，机械精度高，防锈、防磁、绝缘。2.石材质颗粒细腻均匀，其结晶粒度的粗细千变万化；颜色众多。3.石资源分布广泛，便于大规模开采和工业化加工。4.石质地比花岗岩软，属于中硬度石材，有较高的抗压强度和良好的物理化学性能。

　　大理石的化学特性:大理石属于变质岩，其形成过程复杂多样，且矿物种类繁多，所以不同的大理石其材质性能差别很大，像摩氏硬度就从2.5到5相差了一倍。所以大理石的使用有一定的标准:体积密度不小于2.6g/cm3；吸水率不大于0.75%；干燥压缩强度不小于20MPa；弯曲强度不小于7.0MPa。

　　The chemical characteristics of marble: marble is a metamorphic rock, the formation process of complex and diverse, and the minerals are different, so different marble material performance difference, like Mohs hardness is from 2.5 to 5 difference a times. So the use of marble has certain standards: the volume density of not less than 2.6g/cm3; water absorption rate is less than 0.75%; the dry compression strength of not less than 20MPa; the bending strength of not less than 7.0MPa.