Special topic on building hydraulic roughening
Principle of building hydraulic roughening
In recent years, aluminum formwork and prefabricated components have been increasingly used in the construction industry. The application of these new technologies has also brought challenges to some traditional construction methods. The corresponding supporting processes have not kept up in time, resulting in a A series of problems arise. As an important link in the entire construction process, base roughening also faces challenges in its construction methods.
The principle of building hydraulic roughening is to pressurize the water to an ultra-high pressure state of 200-250 MPa with a water pump. Through throttling control, it is sprayed from the nozzle to form a "water jet" that "carves" patterns on the concrete wall. Grooves with a depth of about 1mm form a rough surface while removing release agents, floating dust and other hidden dangers.
1. After roughening, you can directly use tile adhesive to lay the tiles, eliminating the need for sanding, roller coating of interface agents, hanging nets, grouting, plastering and other processes, saving time, materials and labor.
2. Efficiently solve problems such as hollowing and cracking, with one-time delivery and no risk of rework.
3. The construction efficiency is high. One person can operate one piece of equipment, and the daily working volume can reach 800m'.
4. Clean and environmentally friendly, no dust pollution, and can be quickly air-dried if it falls into the water.
5. The roughening effect can be customized according to different needs (the roughening depth, density, etc. are variable).
6. It is convenient for push-through construction and can be cut in at any time according to the progress of the project.
The high-pressure water roughening process is suitable for smooth shear walls, especially the base treatment of concrete walls cast in aluminum molds and precast components (PC). The traditional slurry throwing process is less effective when treating this kind of wall, because the wall surface of the aluminum mold pouring and PC board is smoother, and there is a large amount of release agent and floating ash remaining on it, causing the mortar itself to be separated from the wall. The bonding of the surface is not strong enough. If plastering, tiling, etc. are carried out on this unstable base layer, the hollow rate will increase significantly.
High-pressure water roughening directly breaks the smooth surface of the concrete wall to form a rough surface, allowing cement mortar, tile adhesive, etc. to penetrate into the wall to a greater extent, increasing the contact area, and at the same time, it can also remove hidden dangers such as release agents and floating dust. , thereby greatly improving the bonding force and fundamentally solving the hollowing problem.
Frequently Asked Questions | Our Solutions
For a long time, problems such as hollowing and falling off of walls, ceramic tiles, and insulation boards have occurred from time to time, causing serious safety accidents. For walls and PC components cast in aluminum molds, their surfaces are smoother, have poor water absorption, and have a large amount of release agent and floating ash residue, which causes traditional roughening processes such as grouting and spraying to be used when treating this base layer. The drum rate has increased significantly. It is based on this market demand that the high-pressure water roughening process has emerged. This process breaks the smooth surface of the concrete wall to form a rough surface, increasing the contact between the cement mortar, tile adhesive, etc. and the base layer. At the same time, hidden dangers such as release agents and floating ash are removed, thereby greatly improving the bonding force and fundamentally solving problems such as hollowing and cracking that are prone to occur after plastering and tiling. It can also reduce construction procedures and improve construction efficiency.
