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onyxengineerings

Iron Oxide Pigment

රු900.00

SKU: ron oxide pigments provide a reliable, durable, and aesthetic solution for coloring interlock concrete pavers. Their stable chemical nature, combined with excellent weather resistance, makes them ideal for long-lasting outdoor applications. Proper formulation and mixing are key to achieving consistent and vibrant color across paving units. Category:

Description

1. Introduction

Iron oxide pigments are widely used in the production of colored interlock concrete pavers to enhance aesthetic appeal while maintaining durability and performance. These inorganic pigments provide vibrant, long-lasting color to concrete products used in paving applications such as walkways, driveways, patios, and public landscapes.


2. Product Description

Iron oxide pigments are synthetic or naturally occurring inorganic compounds primarily composed of oxides of iron. These pigments are available in a range of colors—red, yellow, black, brown, and blended tones—and are known for their high tinting strength, UV stability, and resistance to alkali and weather conditions.

3. Application in Interlock Concrete

3.1 Pigment Loading
  • Dosage: 2% to 6% by weight of cementitious materials is typical, depending on the desired color intensity.

  • Uniformity: For even color distribution, pigments must be thoroughly mixed with dry cement before water is added.

  • Compatibility: Iron oxide pigments are fully compatible with Portland cement and other admixtures commonly used in interlock paver manufacturing.

3.2 Mixing Process
  1. Dry Blend: Pigment is first mixed with dry aggregates and cement.

  2. Wet Mixing: Water is added, and the mix is thoroughly homogenized to ensure even color distribution.

  3. Molding & Curing: The colored concrete is cast into interlocking molds and cured under controlled conditions.


4. Advantages of Iron Oxide Pigments in Pavers

  • UV Stability: Resistant to fading under sunlight.

  • Alkali Resistance: Maintains color in the high-pH environment of concrete.

  • Non-Bleeding: Pigment particles are insoluble and remain stable in the matrix.

  • Eco-Friendly: Non-toxic and environmentally safe.

  • Durability: Enhances visual lifespan of pavers with minimal maintenance.


5. Performance Considerations

  • Water-Cement Ratio: Must be controlled to avoid uneven coloration or efflorescence.

  • Curing Conditions: Proper curing enhances color permanence.

  • Surface Finish: Pigment appearance may vary with troweling, finishing, or surface texture.


6. Packaging and Storage

  • Form: Fine powder, available in 25 kg bags or bulk.

  • Storage: Keep in a dry, cool area. Avoid moisture contamination, which may cause clumping.


7. Health and Safety

Iron oxide pigments are non-toxic and non-hazardous under normal handling. However, precautions should be taken to avoid inhalation of fine dust during mixing. Use appropriate PPE (dust masks, gloves).


8. Compliance Standards

Iron oxide pigments for concrete applications typically conform to:

  • ASTM C979 – Pigments for Integrally Colored Concrete

  • EN 12878 – Pigments for the coloring of building materials based on cement and/or lime


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