This standard specifies the structure, technical requirements, inspection methods, inspection rules, signs and Encasement of the cement mortar abrasion resistance testing machine (referred to as the wear resistance machine), which is suitable for testing the wear resistance performance of cement mortar test bodies and Miscellaneous building materials. The wear resistance machine consists of an upright spindle, a horizontal turntable, a transmission mechanism and a Control system, in which the spindle and turntable rotate vertically and in reverse, and the lower end of the spindle can be connected to the grinding head. Technical requirements include spindle verticality, turntable Rotation speed, test body clamping device, etc.