Adding iron oxide pigments to concrete can improve the aesthetics of the concrete surface, as well as improve the UV resistance, weatherability and abrasion resistance of concrete. This article will introduce the concrete method of adding iron oxide pigment in concrete.
I. Preparation
1. Determine the concrete proportion
Concrete mixing ratio refers to the concrete composition of various materials mixed in a certain proportion. When determining the concrete mixing ratio, the strength, durability, wear resistance and other factors need to be taken into account.
2. Determine the proportion of iron oxide pigment added in concrete Generally speaking, the proportion of iron oxide pigment added in concrete is 10%~15% of the total amount of cement. However, the specific proportion should be adjusted according to the environment and requirements of concrete.
3. Choose suitable iron oxide pigment
Iron oxide pigment has many colors to choose, such as red, yellow, black and so on. When choosing iron oxide pigment, it is necessary to consider the use requirements of concrete, environment and other factors.
4. Determine the capacity and quantity of concrete mixerThe capacity and quantity of concrete mixer need to be determined according to the ratio of concrete and construction volume.
Generally speaking, the larger the capacity of the concrete mixer, the higher the productivity.
5. Prepare the raw materials of concrete The raw materials of concrete include cement, sand, aggregate, water and iron oxide pigment. These raw materials need to be prepared in advance and mixed according to the proportion.
II. The method of adding iron oxide pigment in concrete
1. Add cement, sand, aggregate and water into the concrete mixer and mix according to the proportion. The mixing time is generally about 2~3 minutes.
2. Gradually add iron oxide pigment into the mixed concrete and continue mixing. In order to ensure the uniform distribution of pigment, it is recommended to add the pigment into the concrete in batches and mix thoroughly after each addition.
3. The mixing time is generally about 5~10 minutes. If the mixing time is too short, the pigment will not be fully dispersed, which will affect the beauty of the concrete; if the mixing time is too long, the concrete will be too dry and difficult to be processed.
4. The mixed concrete can be poured on site or transported to the site by truck.
III. Precautions
1. The addition of iron oxide pigment should pay attention to the uniform dispersion of pigment to avoid the aggregation of pigment, which will affect the beauty of concrete.
2. The quantity of iron oxide pigment should be strictly controlled, too much will affect the strength and durability of concrete, too little will affect the beauty of concrete.
3. The mixing time should be controlled within the appropriate range to ensure the quality and aesthetics of concrete.
4. When adding iron oxide pigment in concrete, attention should be paid to the control of mixing water to avoid the concrete too wet or too dry.
5. Iron oxide pigment should be selected from products with stable quality, bright color and good durability.
In conclusion, adding iron oxide pigment in concrete is an important work, which needs to be carefully considered and controlled in proportion, pigment selection, mixing time and so on. Only by doing a good job in every detail can we guarantee the quality and beauty of concrete.
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