The gaps between tiles are called "grouting joints", and the filling material in the grouting joints is called "grouting". Tile grouting (joint filler) is used to fill the gaps between the tiles to create a unified appearance, as well as to protect the surface, which will remain visible after the tile is installed. It not only plays an important role in improving the overall effect or contrast effect of the wall, but also plays an important role in improving the impermeability of the wall. For a good tile pulp products, rich and uniform color is an essential requirement, but also should have low shrinkage, low porosity, easy operation, early strength of high characteristics.
Contrast to concrete, is a relatively compressible material so that it will not fail as the concrete around it grows and shrinks due to temperature changes or movement．Concrete is not compressible for the most part. Therefore, whenever a joint is required between two or more pieces of concrete, it is important that some space be allowed between them so that they do not fracture each other as they shrink or expand. Joint filler allows the walls of the concrete joint to compress against it, rather than the concrete slabs compressing against themselves.Care should be taken to place a sealant on the joint filler so that water does not find its way into it, otherwise the water may freeze and render the compressible joint filler material unable to compress, thus potentially resulting in the concrete breaking.
- Consistency, excellent processing and good plasticity
- Ensure proper opening time of mortar
- Improve the mortar adhesion and adhesion to the base material
- Improve droop resistance and water retention
To keep shrinkage to a minimum, unmodified Celopro® MC types are recommended. Celopro® prevents excessive absorption of water into the substrate or the ceramic covering, giving enough time for rubbing and finishing.