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Q: To obtain a very high strength concrete, use very fine grained
  • A. Granite
  • B. Magnetite
  • C. Barite
  • D. Volcanic scoria
Correct Answer: Option A - Granite powder is industrial by products generated from the granite polishing and milling industry in powder form respectively. These by products are left largely unused and are hazardous materials to human health because they are airborne and can be easily inhaled. In the different experiments it has been observed that substitution of 10% of sand by weight with granite powder in concrete was the most effective in increasing the compressive strength about 30%, as compare to normal concrete.
A. Granite powder is industrial by products generated from the granite polishing and milling industry in powder form respectively. These by products are left largely unused and are hazardous materials to human health because they are airborne and can be easily inhaled. In the different experiments it has been observed that substitution of 10% of sand by weight with granite powder in concrete was the most effective in increasing the compressive strength about 30%, as compare to normal concrete.

Explanations:

Granite powder is industrial by products generated from the granite polishing and milling industry in powder form respectively. These by products are left largely unused and are hazardous materials to human health because they are airborne and can be easily inhaled. In the different experiments it has been observed that substitution of 10% of sand by weight with granite powder in concrete was the most effective in increasing the compressive strength about 30%, as compare to normal concrete.