Self-leveling mortar has become one of the most widely used materials in modern flooring systems due to its excellent flow ability and automatic leveling performance. It is commonly applied in industrial plants, commercial spaces, parking areas, and residential floor leveling. However, in real-world projects, even high-quality materials often fail to deliver expected results, leading to issues such as cracking, dusting, and delamination. The root cause is rarely the material itself, but rather improper control of the construction process. Self-leveling is not a simple “pour and go” solution—it is a highly sensitive system that depends on substrate conditions, environmental control, accurate mixing, and precise application. From a material perspective, self-leveling mortar is composed of cement or gypsum binders, fine aggregates, fillers, and various functional additives. It can be categorized into cement-based and gypsum-based systems. Cement-based products comply with JC/T 985-20...
In modern dry-mix mortar systems, redispersible polymer powder (RDP) has become a core performance component, not just an additive. Produced by spray-drying polymer emulsions, RDP can redisperse in water and form a continuous polymer film during mortar hardening. This film acts like a flexible 3D network, binding cement and aggregates together, fundamentally improving the limitations of traditional mortar systems. 1. Tile Adhesive: The Key to Solving Bonding Failure Tile adhesive is one of the most critical applications of RDP. Modern tiles are evolving toward: Low water absorption (<0.8%) Large formats High density surfaces These changes make traditional cement mortar insufficient. 1.1 Solving Bonding Issues with Dense Tiles Traditional mortar relies on mechanical interlocking. However, dense porcelain tiles provide almost no anchoring surface. With RDP, the polymer film enables chemical adhesion and intermolecular forces, upgrading bonding from purely mechanical to hybrid bon...