The commercial name of white and colored cement in India is ............
🎨 Understanding White and Colored Cements
While standard Ordinary Portland Cement (OPC) is grey, special cements are produced for architectural and decorative purposes where aesthetics are important.
- White Cement: This is produced from raw materials that are very low in iron oxide (Fe₂O₃), the main substance that gives OPC its grey color. It is used to create bright white finishes or as a base for vibrant colored concrete.
- Colored Cement: This is made by inter-grinding 5-10% of mineral pigments with either ordinary grey cement (for darker shades) or white cement (for lighter, brighter shades).
📝 Detailed Analysis of the Options
This question tests the knowledge of commercial brand names for these special cements in the Indian market.
(a) Colocrete, (b) Rainbow Cement, (c) Silvicrete
These are all well-known commercial or trade names used by various manufacturers in India for their range of white and colored cement products. They are widely used for decorative flooring, wall finishes, terrazzo, and architectural concrete.
(d) all options are correct
This is the correct answer. Since Colocrete, Rainbow Cement, and Silvicrete are all valid commercial names for white and/or colored cements in India, this option is the most comprehensive and accurate choice.
🏢 Common Uses of White & Colored Cements
| Application | Description |
|---|---|
| Decorative Flooring | Used in terrazzo, mosaic tiles, and polished concrete floors for aesthetic appeal. |
| Wall Finishes | Used for ornamental plastering, stucco, and creating textured wall surfaces. |
| Precast Panels | For manufacturing architectural precast concrete panels with desired colors and finishes. |
| Tile Grouting | White cement is commonly used for grouting tiles to provide a clean, bright joint. |
💡 Study Tips
- Recognize Brand Names: For regional exams, it's sometimes necessary to be familiar with common commercial names of construction materials.
- White vs. Colored: Understand the fundamental difference in manufacturing. White cement is about removing an ingredient (iron oxide). Colored cement is about adding an ingredient (pigment).
- Think Aesthetics: Whenever you see white or colored cement, the primary purpose is almost always related to appearance, decoration, and architectural finishes.