Concrete hollow block can be produced by block making machine, the product is mainly used to fill high-level framework, because its light weight, sound insulation, good thermal insulation effect, the majority of users trust and favor. Its raw materials are:
- Cement. Production of fly ash aerated concrete hollow block should be used Portland cement and ordinary cement is appropriate. It’s mainly to regulate aerated concrete slurry thickening time, to ensure a stable slurry casting. At the same time, cement hydration, setting and hardening can improve the strength of the green body; make the product has a certain strength and better durability.
- Gypsum. Production of fly ash aerated concrete hollow block, all kinds of gypsum can be used. It can inhibition of lime digestion, regulate lime digestion rate and reduce digestion temperature; increase body strength, so that body in handling, cutting, steam curing process can withstand all kinds of noise, reducing body injury;
- Fly Ash. It’s with the lime in the effective calcium oxide in the water under the action of heat, generating more hydration products, to meet the required strength and other properties of the product. It should be noted that the production of concrete hollow block, requiring a high strength of the same, it is also required to have low shrinkage values of other properties and so on. Therefore, the fly ash which is more fineness will be better for the products.