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Black Iron Oxide -To Make The Concrete Interesting

Author: Wasim Siddiqui
by Wasim Siddiqui
Posted: Oct 02, 2014

Black iron oxide pigments are used to add color to the concrete mixes. They are versatile and produce remarkable results. These are used to turn the boring concrete to different hues of interesting colors. Black Iron Oxide Concrete is an artistic addition to any building.

Science behind This Iron Oxide:

They are particles ranging from 0.1 to 1.0 microns. The surface structure and shapes are responsible for the wide range of colors. The color displayed is due to the reflection of light on their surface. For concrete application, there are three basic colors that are produced; which are red, yellow and black; however, different hues are produced by mixing these colors. In concretes they mix with cement and produce different tones of color according to the percentage of iron oxide mixed. The tinting strength depends on the fineness of the oxide mixed.

Concrete And The Intensity Of Color:

The resultant concrete color depends on the factors like:

  • How efficiently the mixing is done?
  • The time taken to mix and many other factors

Thus, different colors are produced according to the need.

The different types of Iron oxides, used for creating a variety of concrete colors are like:

  • Water suspensions
  • Granules
  • Dry

The water suspension pigments are particles that are totally pre-wetted; they produce the precise colors easily. In a concrete mixing cycle, they enable full and fast color development. They are also dust free, and are low cost pigments and simple dispensers.

The granule pigments have good flowing features, and the dry pigments are medium cost dispensers.

Factors Affecting The Concrete Coloring:

  • High temperature affects the coloring. To resolve this, black iron oxides withstanding the higher temperatures are available, and can withstand temperature upto 600 F.
  • The other factor affecting the coloring is the fineness of the cement used, for example, the finer cement requires pigments in more quantity to achieve the desired result.
  • Water affects the coloring, more water content produces lighter tones of color.

The quality of the pigment too is a major factor affecting the color. Different manufacturers produce different qualities of pigments that affect the color, so one must choose the good-quality pigments.

We need to choose the exact pigment and the most favorable one according to our needs, as there are various types of pigments available from many manufacturers. They are available in different quantities and price ranges as well. This black iron oxide decorates the concrete and imparts pleasantness. Vivid colors are achieved with proper skill and efficiency, be it bright colors or mild colors; every intensity of color is achievable and is lovely.

About the Author

Wulfexindia is a well reputed manufacturer & supplier of black iron oxide powder, which is known for its excellent quality standards and precise formulation and used in paint industry etc.

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Author: Wasim Siddiqui

Wasim Siddiqui

Member since: Jun 12, 2014
Published articles: 2

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