Solutions / Products
Main solutions for concrete problems
Building surfaces, such as cement, tile, stone, marble, are subject to damage by natural corrosion because they are exposed to polluted areas. The deterioration is caused by the combined and / or synergistic action of biological, physical and chemical agents.
Water, sulphate anions and airborne particles are considered to be the most aggressive corrosive agents in building materials. In particular, the role of water as a corrosive agent is twofold: (a) it contributes to the leaching of insoluble constituents found in building materials and (b) it contributes to the transfer of salts from one site to another. In addition, water favors the growth of micro-organisms and the formation of crusts on the surfaces of structures.
The promoted structural damage entails high maintenance and repair costs. Therefore, the development of multifunctional products combining either stabilizing, hydrophobic, self-cleaning and / or antifouling properties is a promising solution in the treatment of building surfaces.
The presence of polymers in concrete repair is vast. A large number of combinations is the result of the implantation of polymers into concrete.
Silanes are monomeric silicon chemicals that contain one carbon-silicon bond structure called organosilane. Silane molecules range from 10-15 Å in size. The carbon-silicon bond structure is very stable, very non-polar, and gives rise to low surface energy, non-polar, hydrophobic effects.
Silicates or siliconates
Silicates are a group of anions consists of silicon and oxygen. The most common commercial silicates are lithium silicate, sodium silicate and potassium silicate.
Siloxanes or silicones
Siloxanes are alkylalkoxysiloxanes macromolecules. Compare to silane have the same reactivity and water repellency but have low vapor pressure. Under dry conditions, they exhibit slightly less penetration than silanes. Whereas silanes have only one silicon atom, siloxanes have more than one silicon atom and a molecular size from 25-75 Å. Usually these products are in the form of emulsions.