The baking-free block centered on strength and durability.In simple terms,The strength and durability of baking-free brick mainly comes from two aspectsin simple terms:a.The physical function of molding machine b.The chemistry function after forming gelled material or adhesive material chemistry Physical function:Different effect power can make principle baking-free block more intense and more durable .It including the pressure of machine、vibration power、and vacuum forming the vacuum force when pouring shape at the time of the casting . In addition,and wheel grinding, mixing of materials produced by the homogenization, plasticizing and other auxiliary forces.It can divided two sorts. 1.The power of a single.As only pressure power or only vibration power. 2.The strength of composite.For example,it can not only use pressure power,but also use vibration power and vacuum power. Chemistry function:In general,it is depend rely on cementing material,such as cementing force of cement, magnesite, gypsum ,combine other material particles into a whole .But it can divided flush chemistry intention,mediate chemistry intention and composite chemistry intention. 1.flush chemistry intention. It refers to flush use cementing combine different material.Cementitious materials including method for Cementation of making cement, gypsum, or adhesion of phenolic resin, unsaturated polyester. It is effective for the majority of solid waste materials.And is the widely used in the baking-free brick molding. 2.Mediate chemistry intention. It is exploit excitation function by stimulating effects on activity of solid wastes, to make active solid wastes to produce gelproperties, and then combine different material. 3.Composite chemistry intention. It is combine flush chemistry intention and mediate chemistry. However, in real life ,Most are the physical effects of the combined with chemical method .It is depend on actual situation of waste and requirements of unburned brick technology about what is the role in the physical or chemical action.