In daily life, we can always see colored bricks of various colors on the road, including red road turns, yellow blind bricks, and some cyan and gray bricks. Have you ever wondered why there are so many different colors of bricks? How did they become colorful?
In fact, they all have a common good partner-iron oxide coating. Generally speaking, common cement bricks and road bricks are composed of a fabric layer and a structural layer. The slurry made of iron oxide coating is mainly applied to the fabric layer, which can greatly save costs. The structural layer is composed of white cement, medium sand and other gravel. Iron oxide coating is not only low in price, but also has excellent anti-sun resistance, which has been favored by many industries, especially in the building materials colored brick industry.
Next, let's introduce in detail how iron oxide coating is applied on colored bricks?
See How Iron Oxide Coating Changes?
First of all, we must first handle various raw materials in advance, mix cement, gravel and other materials, and then mix them evenly through a forced concrete mixer, so that various materials can be mixed better together. After they are well mixed, the surface layer is processed according to the different needs of customers, but no matter how varied the customer's needs are, necessary raw materials such as cement, pigment and medium sand must always be added to the formula. It is also possible to keep the brick surface bright according to the customer's requirements if the material of the brightener is used. Iron oxide coating is mainly to better help the brick surface layer to color, so as to improve the comprehensive beauty of the road surface. Look, it turns out that the inconspicuous colored bricks on the road also hide so many secrets?
How To Choose The Right Iron Ooxide Coating?
If you want the iron oxide coating to play a better role, then carefully selecting iron oxide is the easiest way. We can choose according to the following points!
In the early stage, you need to process the raw materials first, mix cement, gravel, medium sand and other materials first, and then mix them evenly through a forced concrete mixer. Then process the fabric layer. Since the needs of customers for the fabric layer are different, the formula basically requires cement, pigment, medium sand, etc. These are necessary raw materials. If the customer requires the brick surface to be bright, it is necessary to add brightener and other materials, and then apply the slurry through the road brick equipment machine press or pour. In permeable concrete, iron oxide pigment powder is mainly used to color the brick surface layer to improve the overall aesthetics of the road surface. We need to pay attention to the following three points to choose the right iron oxide pigment.
1. Coloring Power
In general, iron oxide coatings with strong coloring power are also highly dispersible. How to judge its dispersibility?
You can observe it with the naked eye. You need to observe the particle size of the iron oxide coating, that is, its fineness. If the fineness is higher, the texture is more uniform, and there is basically no color difference between the particles, the general dispersion is better and the coloring power is stronger. Iron oxide coatings with strong coloring power can save the amount of coating color powder, which can save construction costs, and at the same time make the road surface color uniform and without color difference.
2. Coverage Rate
Choose iron oxide coating with high coverage rate. The color powder can fully wrap the surface stone when stirring, without the situation of one section with color, one section without color or discontinuous coloring.
3. Weather Resistance
Choosing iron oxide coating with strong weather resistance can cope with the influence of various severe climates. coatings with poor weather resistance may fade in large areas under the impact of severe weather such as heavy rain, floods, mudslides, etc., which affects the appearance. Iron oxide coating with strong weather resistance has strong protection in this regard. Therefore, in order to have a longer service life of colored bricks and reduce various later maintenance costs, it is best to choose iron oxide coating with strong weather resistance!
The above is the specific application of iron oxide coating in the colored brick industry! But everyone must remember that no matter what kind of brick, it has certain technical requirements. Therefore, in the specific construction process, the raw materials must be fully stirred and polished, so that colored bricks with a longer life can be made. More importantly, the colored bricks must be maintained so that they will not fade easily!
