The mechanism and role of RDP in tile adhesives

The mechanism and role of RDP in tile adhesives.

The modification of cement mortars by polymers allows the two to obtain complementary action effects. Thus allowing polymer-modified mortars to be used in many special applications. In addition, due to the advantages of dry mortars in terms of quality control, construction operations, storage and environmental protection. Redispersible emulsion powders provide an effective technical means for the production of special dry mortar products. Tile adhesive is one of the three most used varieties of special dry mortar products. Let’s take a look at the mechanism of action of redispersible emulsion powder on tile adhesive.

Thanks to its decorative and functional qualities such as durability, water resistance and ease of cleaning. Tile is used in a wide range of applications: walls, floors, ceilings, fireplaces, murals and swimming pools. It is used in a wide range of applications: walls, floors, ceilings, fireplaces, murals and swimming pools, and can be used both indoors and outdoors. The traditional method of applying tiles is the thick layer method. This means that a plain mortar is applied to the back of the tiles. And then the tiles are pressed onto the substrate in layers of approximately 10 to 30mm thick.
Although this method is ideal for construction on an uneven base. The disadvantage is the low efficiency of tiling and the high level of technical proficiency required of workers. The poor flexibility of the mortar increases the risk of dislodgement and makes it difficult to strictly control the quality of the mortar on site. This method is only suitable for highly absorbent tiles, which need to be soaked in water to achieve sufficient bond strength before being applied.

The tiling method currently used in Europe is the so-called thin layer method. A polymer-modified tile adhesive is pre-scraped onto the surface of the substrate to be tiled using a toothed spatula to form a uniformly thick layer of mortar with raised stripes. The tiles are then pressed onto it and twisted slightly, resulting in a mortar layer thickness of approximately 2 to 4 mm.

The tile adhesive has good adhesion to different types of substrates, as well as to surfaces such as full glass tiles, which have a very low water absorption rate. It is also flexible and thus absorbs stresses caused by temperature differences, etc., and has excellent resistance to sagging. The open time is long enough for the application of thin layers, which speeds up the process considerably. Easy to handle and no need to pre-wet the tiles in water. This method of construction is simple to use and easy to control the quality of work on site.

That is all content about the mechanism and role of RDP in tile adhesives.

If you have RDP needs, please contact Landcel.