ABSTRACT
This chapter describes the procedures of rock tests that are according to the Standard for Engineering Rock Mass Determination Methods GB/T 50266-2013. Pycnometer method and weighing method in water are usually used to determine the rock grain density. Rock density is rock mass per unit volume. It is composed of natural density, saturated density and dry density. The index of rock density is used to calculate the rock’s own weight stress. Rock absorption includes rock water absorption test and rock saturated water absorption test. The water absorption of rock is the ratio of the mass of water being absorbed by rock at atmospheric pressure and room temperature to the mass of rock solid particles. The rock slake durability test is used to mimic the natural wetting and drying process of rock by means of mechanic force. The rock slake durability test is used to mimic the natural wetting and drying process of rock by means of mechanic force.
