Shandong wins Asian machinery specializing in the production of various types of brick, brick machine, brick machine, hollow brick, brick pavement and other equipment of the old brick factory.
The compressive strength of ordinary clay is generally 3.5mp, made ​​unburned brick machine was able to achieve more than a dozen MPa compressive strength, is what allows unburned reach such a high compressive strength of it, today, just as we analyze the results, the fact that the force is composed of a series of chemical reactions and the formation of: (a) the physical and mechanical effects; (2) hydration reaction; (3) the particle surface ion exchange material of the role and mission ; interface effects (4) phases.
Physical and mechanical action
The production of industrial waste unburned, mixers and wheel mill mixing of materials with favorable reaction admixture materials to stimulate activity and material between the strength of bricks but also to play a role in improving.
Early strength industrial waste is obtained in unburned brick pressure molding process. Brick molding not only has a certain strength, and due to the close contact between the particulate material to ensure that the physical and chemical action between the material particles can be efficiently carried out, provides for the formation of late strength conditions. General industrial waste unburned molding pressure for not less than 20MPa. The experimental results show that, other conditions being the same, unburned strength industrial waste with a molding pressure of the specimen increased with the increase; effect if no high-pressure molding, even with the addition of cement and lime, can not form a high strength.
Hydration
Hydration products of cement, lime and other cementitious materials to provide industrial waste unburned early strength, the main hydration reaction is as follows:
3Ca0.SiO2 + mH2O-> xCaO.SiO2.yH2O + (3-x) CA (OH) 2
2Ca0.SiO2 + mH2O-> xCaO.SiO2.yH2O + (2-x) CA (OH) 2
4CaO.Al2O3.Fe2O3 + 7H2O-> 3CaO.Al2O3.6H2O + CaO.Fe2O3.H2O
Ca0 + H2O-> Ca (OH) 2
Production of industrial waste unburned materials (such as fly ash, clay, slag) and contains a large number of active silica and alumina and other live parts, the role of admixtures hydration reaction with calcium hydroxide to produce similar hydraulic cementitious material cement hydration products: hydrated calcium silicate, hydrated calcium aluminate, so as to continuously improve the strength of the brick. The reaction formula is as follows:
xCa (OH) 2 + SiO2 + mH2O-> xCaO.SiO2.nH2O (calcium silicate hydrate)
xCa (OH) 2 + Al2O3 + mH2O-> xCaO.Al2O3.nH2O (hydrated calcium aluminate)
In addition, Ca CO2 2 absorption air (OH) generated CaCO3 crystal structure, namely:
Ca (OH) 2 + CO2-> CaCo3 + H2O
When raw materials are subject to the existence of gypsum, as well as the following reaction:
xCaO.AlO3.nH2O + CaSO2.2H2O-> xCaO.Al2O3. (n + 2) H2O (ettringite)
Exchange and Mission of the role of particle surface material
Unburned particles of industrial waste materials under the action of water molecules, the surface to form a thin layer of hydration film, the next two with hydration film role, a part of the chemical bonds begin to break, ionization, the formation of colloidal particles system. Most colloidal particles with negative surface charge, can adsorb cations. Different monovalent cations of different ionic radii may be formed by the reaction Ca (OH) 2 in an equivalent amount of Ca2 + exchange adsorption.
Since the ion exchange adsorption and the role of these colloidal particle surface, changing the charged state of the particle surface, the particles formed aggregates of a small, resulting in strength in the late reaction.
White interfacial reaction
Scientists believe that all chemical interface is started from the interface. In the strength of industrial waste unburned formation process, has reaction liquid and gas phase and solid phase and solid phases. For example, after adding water, cement hydration reaction occurs, that is, the reaction between the liquid and solid phases; while the batch of Ac (OH) 2 is generated in the reaction CaCO3 air CO2 carbonation, is the gas phase and solid phase reaction. These reactions
From the interface of the two phases begin, continue in-depth, the strength of the brick growing.
In summary, mixed with the material and pressure molding process, laying a solid foundation for the late strength of brick; particle surface by ion exchange material of the role and mission, between the cement and lime hydrolysis and raw materials various phases of the hydration reaction interface, generating a variety of crystal cross lap together to form a spatial grid structure, the strength of the industrial waste unburned gradually increased.

Shandong Sheng Machinery Co., Ltd has been committed cement products machinery research and development, production and sales, with advanced equipment, professional and technical skills, and two decades of practical experience, the company has always been at the forefront of research and development center block making machine market development , concerned about the advanced technology at home and abroad, to develop products for the investment needs of different users, there are block making machine, hydraulic tile machine, cement pipe machine, blender, suspended roller machine, wire rod machine equipment. Currently has 19 branch offices and six foreign countries (Nigeria, Tanzania, Algeria, Kenya, Mozambique, Ethiopia) and exported more than 100 countries and regions.