Explanation

The mechanical strength of inorganic materials began to significantly reduce the previous temperature. A measure of the melting resistance (no significant deformation, no significant chemical change in the atmosphere, and no significant reduction in strength) of raw materials and products of refractory. Generally, the material to be tested is made into a sample cone with the same shape and size as the standard temperature measurement cone. It is heated together with the standard temperature measurement cone at a certain heating rate at the same time, and the degree of deformation is compared. For cement concrete, it refers to the ability of heat resistance. The heat resistance of cement is related to the type of cement, and slag cement is superior to ordinary cement. For glass, it refers to the ability of laminated glass to withstand certain temperature without causing damage, foaming and degumming under specific test conditions.

Classification