Refractory castable is a kind of refractory aggregate, powder, binder, etc., which is mainly used for the construction of refractory materials such as industrial kiln lining and ladle. In the winter construction process, due to the low temperature, the construction of refractory castable needs to pay attention to some special matters to ensure the quality and effect of construction.
1. Preparation before construction.
Before winter construction, the refractory castable needs to be fully preheated to avoid freezing of the material. At the same time, it is necessary to check whether the construction environment meets the requirements, such as temperature, humidity, etc. If the ambient temperature is too low, corresponding measures need to be taken, such as heating, insulation, etc., to ensure the smooth progress of the construction.
2. Precautions in the construction process.
1.Mixing time: During the winter construction process, the mixing time needs to be extended appropriately due to the freezing of the material. Generally speaking, the mixing time needs to be controlled at 3-5 minutes to ensure that the materials are well mixed.
2.Pouring speed: During the pouring process, it is necessary to control the pouring speed to avoid cracks in the material. At the same time, it is necessary to pay attention to the pouring temperature to avoid freezing of the material.
3.Curing temperature: During the curing process, it is necessary to control the curing temperature to avoid problems such as cracking and falling off of the material. Generally speaking, the curing temperature needs to be controlled between 10-20.
4.Curing time: During the construction process in winter, due to the low ambient temperature, the curing time needs to be appropriately extended. Generally speaking, the curing time needs to be controlled between 7-14 days.
3. Post-construction inspection and maintenance.
After the construction is completed, the refractory castable needs to be inspected and maintained. If problems such as cracking and falling off are found, measures need to be taken to repair them in time. At the same time, the refractory castable needs to be inspected and maintained regularly to ensure its use effect and service life.
In short, in the winter construction process, it is necessary to pay attention to the pre-construction preparation of the refractory castable, the precautions during the construction process, and the inspection and maintenance after the construction. Only in this way can the construction quality and use effect of refractory castable be guaranteed.