When we walk in subway stations, shopping malls, hotels, and high-end office buildings, we will always see that some of the stones on the ground are very dirty and the color is obvious, which greatly affects the beauty. This phenomenon is that the stones are polluted, so how can we avoid this problem in our life? In this article, let’s talk about stone protection.
Stone protection is divided into pre-installation protection and post-installation protection, that is, six side protection and surface protection.
The six side protection is generally the protective agent suitable for brushing the surface and the surrounding and bottom before the stone installation, and the surface protection after the stone installation is generally the protective agent suitable for brushing the stone surface comprehensively and evenly so that the stone has a certain ability to prevent pathological changes.
Properties of stone protective agent
1. Waterproof performance
This is a basic index to express the performance of the protective agent. It indicates the waterproof ability of the stone and the degree of the change of the water absorption of the stone caused by the application of the protective agent on the stone. It is usually expressed by the waterproof property.
2. Alkali resistance
This is one of the key indicators to express the internal quality of the protective agent. It indicates the ability of the protective agent to resist the damage of alkaline substances after it is applied to the stone. It is usually expressed as alkali resistance.
Alkali resistance = (water absorption of stone before protection – water absorption of stone after protective agent in alkaline solution) / water absorption of stone before protection x 100%. The higher the index is, the better the alkaline property of the protective agent is.
3. Acid resistance
This is one of the key performance indicators to express the internal quality of the protective agent. It indicates the ability of the protective agent to resist the damage of acid substances after it is applied to the stone manufacturer. It is usually expressed as acid resistance.
Acid resistance = (water absorption of stone before protection – water absorption of stone after protective agent in acid solution) / water absorption of stone before protection x 100%. The higher the index is, the better the acid resistance is.
4. Permeability
This is one of the key indicators to express the internal quality of the protective agent, which indicates the ability of the protective agent to brush on the stone and immerse in the surface of the stone. The higher the index is, the better the penetration ability of the protective agent is, the better the abrasion resistance and scrubbing resistance of the protective layer is, and the longer the effect is.
5. Antifouling performance
This is a basic index to judge the defense ability of stone protective agents. It indicates the ability of the treated stone to resist liquid pollution. In addition, the evaluation of defense capability should be combined with the above four indicators. The better the anti-pollution capability is, the better the above four indicators are.
Water-resistance = (water absorption of stone before protection – water absorption of stone after protective agent) / water absorption of stone before protection x 100%. The higher the index, the better the waterproof performance of the protective agent. From the existing materials and technology, the waterproof performance index of 80-90% should be better.
People often have a misunderstanding that it costs money and trouble to protect the stone on six sides. As long as the surface of the stone is protected, everything will be fine. The surface protection of stone can only solve the erosion and pollution of the external environment on the surface of the stone, but can not completely solve the infringement of cement mortar on wet pasted stone, and can not completely avoid the occurrence of white and water spots and other diseases of stone.
Similarly, if only for the bottom protection of stone without surface protection, stone surface pollution and rust and other diseases will be difficult to avoid, even if they use cleaning products to clear the disease, also can not avoid a variety of stone disease repeatedly, unbearable trouble.
Therefore, the best way is to protect the stone on six sides. In addition, the stone before construction to do professional waterproof treatment, so that it is not polluted by the outside world, has always maintained a bright as the new effect.
Stone waterproof is divided into water-based and oil-based two kinds, two kinds of users, the final effect is the same. The difference is that there are differences in the installation process. It is recommended to use a water-based protective agent when paving marble on the ground, and both water-based and oil-based can be used on the wall.
The differences between water-based and oil-based stone protectants are as follows:
● It tastes different
1. Water-based stone protective agent: the water-based stone protective agent has no odor.
2. Stone protective agent oily: stone protective agent oily smell is very strong, pungent.
● Different methods of use
1. Water-based stone protective agent: after brushing the water-based protective agent, you can brush the oil-based protective agent.
2. Stone protective agent oily: brush the oily protective agent can no longer brush water-based protective agent.
● Different characteristics
1. Water-based stone protective agent: the stone curing agent that can be dissolved by water has relatively weak permeability (except for water-soluble solvent-based protective agent), but its toxicity and smell are relatively small, and it is non-combustible. Suitable for loose stone surface protection treatment.
2. Stone protective agent oily: can be dissolved by oil-soluble solvents, strong penetration, but relatively toxic, flammable, strong smell. It is suitable for the protective treatment of stone front and dense surfaces.
● The application is different
1. The water-based stone protective agent is suitable for exterior wall decoration (easy to seep and weather-resistant) and interior decoration;
2. Oily stone protective agent is suitable for the protection of exterior wall and curtain wall.
There are two kinds of common waterproof technology: brushing and soaking. Generally, small and medium-sized manufacturers use brushing technology to brush stone protective agents. Before brushing, the processed stone should be dried thoroughly (there is no water inside) and brushed once, and then painted with six side protection after it is completely dry.
Check whether there are well-protected products, you can pour a little water or colored water on the surface or bottom of the stone to see if it can form drops of water. After more than ten minutes, wipe the water with a cotton cloth. There is no watermark or dyeing on the stone surface, which means that the stone waterproof treatment is in place. If you can’t form water droplets, a large area of water seepage, it is that the protection is not well done.
Stone in the production, installation, and use process, usual protection is very important, must be strictly controlled, according to the specification to do protection. Well, that’s all for today. Welcome to share with me by email at sales@sntstone.com.
