Is gypsum drying related to low temperature?

The plaster is not dry, which may be due to the following reasons: the plaster bandage has expired, the weather is cold, and the plaster has not been put into the water for a long time. It is suggested to check the probation period on the plaster bandage package, and put warm water into the plaster appropriately to shorten the time for putting the plaster bandage into the water. If the weather is cold, the plaster bandage can be heated appropriately.

Gypsum use method

Preparation method of high-hardness gypsum powder: only gypsum powder and water are needed, and the ratio of gypsum powder and water is 100:28, which will be mixed in proportion. First add water, then add gypsum powder. It is important to remember that if gypsum powder is added first and then water is added, it is difficult to mix evenly. The hardness of gypsum is directly proportional to the uniformity of stirring. The more uniform the stirring, the higher the fastness.

Mastery of solidification time. Solidification time is mainly related to water addition, followed by stirring time, pouring container, temperature and humidity. The first is the mixing ratio of water and gypsum powder. The more water, the longer the setting time of gypsum, the lower the density and fastness of gypsum, the less water, the shorter the setting time, the greater the density and the higher the fastness, which should be controlled according to the use requirements.