Many customers have just come into contact with the automatic mortar spray machine, and the performance characteristics of the automatic mortar spraying machine are not very clear, and they are doubtful about the use effect. In the future, there are many concerns about whether to use the automatic mortar spray machine in the project. In order to understand and become familiar with machine-sprayed gypsum mortar, summarize related issues in order to better publicize and promote automatic mortar spraying machine. The following describes the factors affecting the automatic mortar spray machine in order to avoid unnecessary trouble caused by these problems when using the automatic mortar spraying machine.
First of all, the factors affecting the automatic mortar spray machine are the low cement grade, the unqualified raw materials, and the sand is too fine. Secondly, the water-cement ratio of the automatic mortar spray machine is too large, resulting in a decrease in the strength of the cement mortar. Do not use too much water in the construction of the automatic mortar spraying machine, otherwise the strength of the mortar will be reduced, and loose cement ash will appear on the surface. The process arrangement of the automatic mortar spraying machine is not suitable, and the basic principles of cement hardening are not understood, which causes the ground calendering time to be too early or too late. If the calendering is too early, the hydration of cement has just begun, the gel has not been fully formed, there is more free water, and surface floating water will also appear, reducing the strength of the cement mortar surface layer; if the calendering is too late, the cement has finally hardened, The capillary holes and scratches on the surface layer of cement mortar cannot be eliminated, and it will also disturb the hardened surface, which greatly reduces the strength and anti-wear ability of the surface layer.
During the construction of the automatic mortar spray machine, it has not reached the construction level of the next procedure, that is, the improper maintenance of the finished product will also cause sanding of the mortar floor. If the strength of the cement floor mortar does not reach a certain strength, people walk around or carry out the next process construction, which causes the ground to be rubbed and cause sand. Cement mortar floors may damage the bonding force due to freezing and form loose particles.
