Good practical applications of iron oxide in concrete

3 great applications of iron oxide in concrete

Practical applications of iron oxide in concrete

Many users found that with the prolongation of use time, there are more and more problems with iron oxide, and it is more and more difficult to solve. For example, the problem of iron oxide they encountered during use has brought them a lot of I don’t know how to solve the problem, so I came to us for help. Today, I will discuss some of the knowledge about this aspect that I will consult with you, hoping to bring inspiration and help to our customers and friends, and let everyone have a deeper understanding of the applications of iron oxide in concrete。


Iron oxide is widely used in our lives. It often exists on our walls and playgrounds, and can be used for rust removal. How does it integrate into concrete? What are the specific applications of iron oxide in concrete? , let us all find out applications of iron oxide in concrete together today.


1. The amount of iron oxide in concrete products is limited to 1-10%. If the limit is too high, the mechanical strength of the product will be reduced. Usually 5-8% is appropriate. The product contains lead and zinc oxide. Affects setting time and setting strength.

2. Concrete products sometimes need to be cured by hot pressing above 200°C, so black and brown iron oxides that can be converted into iron red at 180°C need to be thermally stabilized first. If used on terrazzo, the thickness of the bottom layer is 2 to 3 cm, and the thickness of the surface layer is 15 cm.

3. The applications of iron oxide in concrete area utilizes its excellent weather resistance, alkali resistance and light resistance, which are not available to other inorganic pigments.


In essence, concrete dyeing is a translucent dyeing process through dye penetration. Unlike acid dyeing, dyeing dyes do not chemically react with concrete, but contain fine dye elements that can penetrate into the concrete surface. . Both water-based and solvent-based dyeing dyes are available, each with their own unique quality characteristics. Water-based dyes generally create a muted tones effect, while solvent-based dyes use bolder, brighter colors, including red, yellow, blue, green, violet, and orange, to name a few.


Most dyeing dyes are concentrated and packaged, which can be fully and flexibly used in dyeing. They can be fully dyed to make the color full and thick, or diluted with water to create a dull shadow or light color effect. During construction, you can mix and mix different colors together to create the customized color effect you want.


Concrete dyeing can also be used in chemically colored projects to make the color more prominent and increase the breadth of design options. Experts say that the main reason for using dyeing is that when chemical coloring cannot achieve a certain color effect, dyeing This shortcoming can be flexibly compensated for. When combining concrete stains with chemical stains, there is no limit to the pre-determined palette.


However, with the dyeing technology used in chemical coloring engineering, there are many other uses. Listen to what the iron oxide red manufacturer (Great Spring)has to say. In some places on the concrete panel, the dye may not have a chemical reaction with the concrete during coloring, and it can be used at this time. Dyeing techniques intensify the colors in these areas, and touch-ups accentuate them. Add visual texture and depth to concrete or cemented surfaces.


It can transform simple and thin earth tones into bright and vivid shades. Create color layers. In some places where chemical tinting has been used to create layered bright shades, tinting techniques are used to lighten pastel colors.


The particle size of iron oxide pigments is extremely small and finer than that of phthalocyanine pigments, so the transparency is very good. Combine iron oxide pigments with transparent organic pigments to obtain yellows, goldens, oranges, browns, reds and greens. For metallic paint. In addition, iron oxide pigments have good UV absorption, helping to protect the adhesion of metallic paint coats.


Another important applications of iron oxide in concrete is in wood lacquers. Because of its high transparency and strong absorption of ultraviolet rays, when preparing wood lacquer, it can not only make the wood lacquer have a beautiful appearance, the pattern of the wood can still be seen, and the defects of the wood can be covered, but also has a high protective effect. Studies have shown that the use of 5% transparent iron oxide gives the best protection without affecting the natural pattern of the wood. In Europe, this coating method has been widely used.


For these who want to find a video of what are the applications of iron oxide in concrete, you could find out here. For these who want to find out some good iron oxide to buy after know the applications of iron oxide in concrete, the recommendation is Great Spring’s Iron oxide. 

Iron oxide pigments for cement building materials are beautiful and durable in color tone, resistant to strong sunlight exposure and climate change, as well as alkali resistance, mortar resistance, etc., have no damage to the properties of cement, strong tinting strength, and have the most suitable particle fineness and particle size It has good organization and dispersibility, and is used for the following various building structures and cement products coloring, various indoor and outdoor colored concrete surfaces and building surfaces.


Such as walls, floors, floor tiles, roof tiles, panels, sinks, blocks, towers, colored mortar, etc. Colored surface tiles, ridge tiles, terrazzo and mosaic tiles, used to decorate indoor and outdoor walls, floors, stairs, porches, passages, etc., artificial stone, such as artificial marble, artificial travertine stone, etc., asbestos cement, used for To decorate wall panels, floor stone cover plates, roof tiles, window sills, stairs, etc. (taking iron oxide red as an example) the applications of iron oxide in concrete are:


The amount of iron oxide red pigment in concrete and cement products is limited to 1-10% base on the applications of iron oxide in concrete. If the limit is exceeded, the mechanical strength of the product will decrease. Generally, 5-8% is appropriate. Practice has proved that the ratio of iron oxide red and cement is 1 to 5. More suitable, recommended dosage: 1-2 kg of iron oxide red, 50 kg of cement, appropriate amount of water, if you need to add sand, you need to add 100 kg.

At the same time, the iron oxide red pigment does not contain the two compounds of lead and zinc oxide, which will affect the setting time and setting strength. Concrete products are sometimes required at 200. C and above are cured by hot pressing, so black and brown iron oxides that can be converted into iron red at 1-80 °C must be thermally stabilized first, such as using on terrazzo, the bottom layer thickness is 2-3 cm, and the surface layer thickness is 15 cm. 


The largest consumer sector for iron oxide pigments is the architectural and coatings industry beside the applications of iron oxide in concrete. The rise and fall of these two industries and changes in demand directly control the consumption situation in this region. The amount of iron oxide used in colored mortar alone in recent years exceeds 7,000 tons per year. In addition to paving materials, Western European concrete roof tiles, concrete prefabricated parts, concrete blocks, colored bricks, colored mortar, etc. also require a large amount of iron oxide pigments. 


In North America and Canada, influenced by European styles, the consumption structure of iron oxide is similar to that in Europe. applications of iron oxide in concrete in Canada and Australia are also mainly used in the construction industry. 60% of iron oxide in Western Europe is used in building materials. 


For example, 30,000 tons of 50,000 tons of annual consumption in the United States are used in the construction industry; the applications of iron oxide in concrete materials in the United Kingdom is growing at an alarming rate. 65% of Canada’s iron oxide products are used in the country’s concrete industry, and 10% are used in colored concrete mortar. Of the 20,000 tonnes of iron oxide pigments traded annually in Australia, its demand fluctuates with the number of new buildings


In the United States, affected by the European market in recent years, the applications of iron oxide in concrete in the construction industry has continued to increase with the rapid development of this industry, and the annual consumption of synthetic iron oxide is about 40,000 to 50,000 tons. Iron oxide in the United States is mainly used in concrete paving blocks (about 15% to 20%) in the building materials sector.


A large number of iron red, iron yellow, iron brown and iron black are used to make colored concrete products as one of applications of iron oxide in concrete. Used in housing construction, iron brown and iron black are the most popular building materials colorants in my country. In conclusion, the global iron oxide consumption market, both existing and potential markets, is mainly dominated by the demand for pigmented building materials as one of the applications of iron oxide in concrete.

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