The deformation problem of ice and fire boards and its solutions

The deformation problem and solutions of ice and fire boards

The fiber cement used in the production of ice and fire boards is an inorganic cementitious material. One of its characteristics is the appropriate temperature, humidity, and hardening time after molding, which allows for sufficient chemical reactions and endows the product with excellent physical and mechanical properties. Therefore, the installation and maintenance process parameters

The main reason for the deformation of ice and fire boards is their poor stability. This type of product generally has a large format, small thickness, and large deformation, which affects the quality of engineering construction. The discomforts that occur in engineering are the tensile joints and uneven surface of the board splicing. There are many reasons for the deformation of ice and fire boards. After investigation, the main reason is poor maintenance and insufficient hardening during production

After the product is formed, it should be placed in an environment with appropriate temperature, humidity, and sufficient curing time to fully undergo hardening reaction in that environment, and absorb free magnesium oxide and free water reaction as much as possible during the hardening process. As much free water as possible is absorbed into the hardened material, becoming solid crystalline water, drying the product and reducing its shrinkage. After this process, the volume stability of the product is in good condition, avoiding deformation during repeated use. On the contrary, if the above hardening process is not done well, the amount of hardening products produced in the product is insufficient, and there is a large amount of free magnesium oxide and magnesium chloride present. Once the ice and fire board is used at appropriate temperature and humidity, the chemical reactions inside the ice and fire board will restart., There will be a significant expansion of internal forces