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Foam concrete is more and more popular in the world. How to make foam concrete block?
This foam concrete machine consists of feeding, mixing, foaming and pumping system and it is a complete production line. This foam concrete production line can be used to produce large quantities of foam concrete blocks.
The production process of making foam concrete blocks is simple and easy, but it is very important that we need to maintain the foam concrete blocks after our production is completed.
Covering watering maintenance is based on the outside temperature. Generally, the concrete should be covered with straw, lusha, sack, sawdust, wet soil and wet sand within 3-12 hours after pouring the foam concrete, and often watered to keep it moist. Foam concrete watering maintenance date, the concrete mixed with Portland cement, ordinary cement and slag cement shall not be less than 7 days and nights.
The natural curing of foam concrete can be divided into cover watering curing and plastic film curing.
1. Covering watering and curing is based on the outside temperature. Generally, the concrete should be covered with straw, lusha, sack, sawdust, wet soil and wet sand within 3-12 hours after the foam concrete is poured, and watered frequently. Keep it moist. Foam concrete watering maintenance date, the concrete mixed with Portland cement, ordinary cement and slag cement shall not be less than 7 days and nights. Concrete with retarding admixture or impermeability requirements shall not be less than 14 days and nights; when using bauxite cement, it shall not be less than 3 days and nights.
The number of waterings per day can keep the concrete in a sufficient wet state. When the temperature is above 15 °C, watering should be done at least every 3 hours during the day and night after the concrete is poured. Water should be watered at night. Twice, in the future maintenance, at least 3 times a day watering (of course, when the temperature is dry, you can increase the number of watering properly).
2. For larger area (or volume) of concrete, “water storage and conservation” should be adopted. For the reservoir type, the project can be watered and cured after the internal mold is removed and the concrete reaches a certain strength; for the underground structure or foundation, It is possible to resurface the asphalt emulsion or backfill it with soil instead of watering.
3. Plastic film curing means that the concrete is separated from the air by the plastic film, the moisture is not evaporated, and the hydration of the cement in the concrete has reached the condensation hardening. This method can directly cover the plastic mold on the surface of the concrete, or spray the plastic emulsion on the surface of the concrete member. After the emulsion is volatilized, a concrete film is combined on the concrete surface to make the concrete member and the air. Isolated, so that the moisture in the concrete no longer evaporates to complete the hydration.
The disadvantage of spraying plastic film curing is that the strength of 28d concrete is about 8% lower, and because of the thin film formation, it can not fully achieve the function of heat insulation and freezing. Therefore, in the summer, this method is to add sun protection facilities. Less than 24h), otherwise it will cause filiform cracks in the foam concrete.
If we ignore the curing of the foam concrete blocks, the performance of the foam concrete blocks will not good, even can not be used in the project. foam concrete machine supplier. We can provide the foam concrete block making machine, foam agent and moulds for you to make good foam concrete blocks.
