How much water is added during the construction of refractory castable?

Refractory castable is an amorphous refractory made of refractory aggregate, powder, additives and binder according to the formula. A certain amount of water needs to be added during construction, and the amount of water has become a big problem during construction. When a small amount of water is added, the refractory castable can not be fully stirred, the amount of water is large, and the refractory castable is not easy to form, which affects the use and construction of refractory castable. How much water is added during the construction of refractory castable? How much is appropriate?

The hardening rate of cement in refractory castable is closely related to the amount of water added. The most appropriate water cement ratio should be selected at the peak of water cement ratio curve.

The amount of water added is closely related not only to the variety of cement, but also to the shape and properties of particles. During masonry, in order to determine the strength of castable, the basic cement ratio is controlled between 0.4 ~ 0.6, and the moisture in the mixture is controlled between 5% ~ 6%.

The amount of water added during construction can not be well controlled. How to check whether the amount of water added is excessive? Here are two inspection methods:

1. Spherical test method: after adding water consumption, put the refractory castable in your hand and form a ball. If the ball is crushed and separated, it means that the amount of water added to the refractory castable is less; If there is slight flow, the amount of water added is just right. If it flows immediately, it indicates that the amount of water added to the refractory castable is too much.
2. Vibrator test method: put a vibrator in the plate of the mixer. After pulling out the vibrator, if there is a hole on the refractory castable, it means that the amount of water added is not much. If the flow performance of the refractory castable is good, the amount of water added is just right. When there is water accumulation during vibration, it means that the amount of water added to the castable is more.

During the construction of refractory castable, the amount of water added should not only be judged according to the material of refractory castable, but also consider the construction environment and temperature. Different construction temperatures also determine the amount of water added to refractory castable.

The service performance of the lining after the construction of refractory castable is closely related to the construction method and construction process. Therefore, the construction of refractory castable also needs professional construction personnel. Ruiwo refractory has a professional refractory castable construction team. It has contracted the construction service of refractory castable for many years and has been highly praised by customers for the construction of major kilns at home and abroad, The kiln has a good use effect.