In the production process of pneumatic concrete block equipment, various raw materials play a very important role. The raw materials of quality passing are highly important indicators to determine the production rate of gas -added concrete blocks. Essence The gas -added concrete block equipment supplied by Weida Environmental Machinery, Shandong, can customize the aerated concrete block equipment suitable for customers according to the situation of the raw material of the customer. %above. The following editors will take you to understand what a variety of raw materials play in the production process of pneumatic concrete block equipment:
1. Lime: Provide SiO2 and AL2O3 reactions in calcium oxide and silicon materials to generate hydrophilic products and form the strength of the product. Lime also provides alkali degrees to exhale with aluminum powder. During the hydroponic hydration, the body is hardened.
2. Powder ash: Provide a CAO reaction in the silicon material and calcium materials, generate hydrophilic products, and contribute the strength of the product. Gyeong and coal ash can also be used as a skeleton to reduce the shrinkage of concrete products.
3. Cement: Provide calcium materials to contribute to the strength of the concrete block. The main role of cement is to ensure the stability of pouring, accelerate the hardening of the body, and the plastic strength of the body during cutting.
4. Gypsum: Contribute the strength of the body. During the static stop, hydrophilic sulfuric acid (calcium) and C-S-H gels were generated, which enhanced the bearing capacity of temperature difference stress and humidity differences during the steaming process during the steaming process. It also improves the strength of the product and reduces contraction, and improves frost resistance. Promote the hydrophilic reaction process, promote the transformation of Tobermo stone, form intensity, and inhibit the production of water pomegranate stone, and make the shrinkage less. It also delays the thickness of the slurry, delays cement condensation speed, suppresses lime disintegration, reduces lime dissolving, and reduces the temperature to dissolve. The gypsum varieties used to add brick bricks are: two water gypsum, semi -water gypsum and hard gypsum. However, in production practice, no half -water plaster is seen outside, which causes false coagulation due to dehydration, which makes the watering unstable. In the mixed grinding process, to prevent the two water gypsum from dehydrating, the mixing temperature is required <70 ° C; if the mixing temperature is> 70 ° C, the intermediate warehouse storage time is 2 to 3 hours, while grinding while grinding edges Pour with the edge. You can use industrial waste gypsum instead of natural Ershui gypsum, and directly add the mixer without participating in mixing. If you use natural hard gypsum instead of natural two water gypsum, you can participate in mixed grinding. At this time, the ground temperature is not limited.
5. Water: The water is added to ensure that the composition materials of the slurry can be stirred evenly, ensuring that the slurry can be poured smoothly into the mold, and it can be exhaled normally. Whether the amount of water is used well can affect the grown gas and condense process, and eventually affect the pore structure of the material. Excessive water adds too much water, which is too thin, and the aluminum powder and calcium hydroxide reaction accelerates. At the same time, the condensation time of the concrete slurry is continued, resulting in the inability to synchronize the gas and condensation time, resulting in the sinking and boiling phenomenon of the slurry. The structure of concrete pores is damaged and affects the quality of the product. If the amount of water is too small, in addition to the influence of stirring and pouring, it will cause the slurry to condense prematurely before the air is over. In severe cases, the slurry is insufficient, causing the product to crack.
6, foaming agent: is the surface active substance to reduce the surface tension. The concentration of the foaming agent increases, and the surface tension is reduced to a lot. When the concentration is reached, the surface tension no longer changes. Surface active agents have foaming ability and steady bubble performance.
