2. The water in the cement mortar gradually disappears, leaving many gaps, and neither ceramic tile nor cement mortar can fill this gap, resulting in the separation of the two.
3. To solve this problem, it is very simple. Choose ceramic tile binder before paving, among which Hubei Jianke ceramic tile binder and Datang Yipin ceramic tile binder have the highest cost performance, with their own technology (national invention patent) and guaranteed quality (20 years after signing the contract). Specifically, you can Baidu yourself.