Atmospheric steam curing technique for fiber cement external wall panel

[0008] The atmospheric steam curing process for fiber cement exterior wall panels of the present invention specifically includes the following process steps:

[0009] First, after the fiber cement exterior wall panel is extruded, the fiber cement exterior wall panel is cured by low-temperature steam for 10-20 hours at 20-30 ℃, and the curing humidity is controlled at 60-80%. After the cement is finally set, it will enter the next curing stage;

[0010] 2) Carry out high-temperature steam curing at 60-90°C for 5-15 hours, and the curing humidity is controlled at 70-90% to avoid excessive humidity that may affect the strength of fiber cement exterior wall panels due to water absorption and saturation.

[0011] The fiber cement exterior wall panel is steam cured through the combination of low temperature steam curing and high temperature steam curing, so that the product has higher initial strength, and the product is not prone to bubbles, which improves product quality and production effi