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Strengthen the grouting material is more suitable to high pressure steam curing Epoxy resin grouting material

by:Kastar     2020-12-07
Epoxy resin grouting epoxy resin grouting material manufacturer epoxy resin grouting material price high pressure steam curing with atmospheric pressure steam curing is completely different, not only operation method, the characteristics of the reinforced epoxy grouting material is also different.       Because the pressure above atmospheric pressure, so must be able to provide wet steam pressure container type curing room, at the same time do not allow the superheated steam contact reinforced epoxy grouting material, in order to avoid reinforced epoxy grouting material is dry. The containers are called autoclave, high pressure steam curing, also known as autoclaved curing.     Nanchong high strength epoxy grouting material;       First used in high pressure steam curing lime-sand brick and light porous reinforced epoxy grouting material, is still widely used in this respect. In the field of the reinforced epoxy grouting material, high pressure steam curing are often used to smaller prefabricated, when the prefabricated products have the following features requirements is to adopt high pressure steam curing is more suitable.       1, high early strength, high pressure steam curing of the 24 h can achieve under normal curing 28 d intensity, has been reported by high pressure steam curing strength reached 80 - 100MPa。       2, high durability, high pressure steam curing improves the reinforced epoxy grouting material sulfate and other forms of chemical erosion resistance, and also improve the frost resistance and weathering resistance.       3, to reduce the reinforced epoxy grouting material shrinkage and moisture migration in taiyuan no shrinkage epoxy grouting material;           Building materials test showed that the best curing temperature is about 177 ℃, the corresponding steam pressure to zero. 8 mpa, higher than the atmospheric pressure. When added to cement grinding fine quartz sand, high pressure steam curing is particularly effective, this is due to the quartz sand and C3S hydration releasing Ca chemical reaction happened. Under the high pressure steam curing, high content of C3S cement than the strength of the high content of C2S cement with higher growth ability, tub in changchun, but high pressure steam curing epoxy grouting material calls for a short time C3S/CS2 slightly lower than the cement with high effect. In the process of curing high temperature also affect the hydration reaction of cement and itself.     Should be emphasized, longer at lower temperatures will be under the high temperature curing time shorten curing time get the best high strength. For any kind of maintenance cycle, there is a optimal strength of the optimum temperature. For a given material, can draw a the best strength in different curing cycle and the relationship between the curing temperature curve.       In fact, the high pressure steam curing cycle depends on the details of the maintenance device and reinforced epoxy grouting material used in the component size. Normal before put into the autoclave curing time length will not affect the quality of the high pressure steam curing reinforced epoxy grouting material, must be based on the mixture of dry hardness to choose the right and the curing time, make its have sufficient strength to resist the process. The lightweight reinforced epoxy grouting material, high pressure steam curing cycle details shall be determined according to different materials through experiment.         Steam curing is only applicable to ordinary Portland cement reinforced epoxy grouting material, high alumina cement and cement persulfate under high temperature curing will bring adverse impact.         In silicate type of cement, cement type of strength may also be affected, but the influence degree and under the condition of normal temperature condition is not necessarily the same, there is currently no systematic research to this. Even graining blast furnace slag, as its high sulfur content also may produce adverse effect. High pressure steam curing can accelerate mixed with calcium chloride reinforcing epoxy grouting material hardening, but its intensity relative growth is less mixing calcium chloride reinforcing epoxy grouting material is low.
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