SAMPLE REMODELING,COMPACTNESS CHARACTERISTIC AND MECHANICAL BEHAVIORS OF ROCKSOIL MIXTURES

According to experimental theory and method of soil mechanics and rock mechanics,this paper studies equipments,methods requirements for sample remodeling of rocksoil mixtures(RSM). A standard procedure for sample remodeling of RSM is proposed. Compactness characteristic and mechanism of RSM are analyzed by comparing lots of remodeling RSM samples with soil samples. The compactness of RSM in sample remodeling is completed as a result of the compactness of the soil in RSM in fact. The uniaxial compression of RSM is firstly carried out by utilizing highprecision rock test rig. Some important test data are obtained to explore the mechanical behaviors of RSA. It is shown that the compression strength,Youngs modulus of RSM are lower than those of soils under the uniaxial compression,which contradicts to the common consensus. This contradiction could be explained with the poor contact mode between the rock blocks and soils in RSM,where the skeleton structure composed of rock blocks in RSM beard the main loading under unconfined compression while the soils in RSM did little. Overall,the skeleton structure composed of rock blocks in RSM is crucial to the compression strength,Youngs modulus,characteristic of deformation and failure for RSM. It also is an important mechanical behavior of RSM. 