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Q: Which of the following is a key ingredient in the preparation of high performance concrete?
  • A. Silica fume
  • B. Volcanic ash
  • C. Blast furnace slag
  • D. Pumice
Correct Answer: Option A - Silica fume have found their use in shotcrete applications, pumped concrete, mining and chemical industries. The high strength concrete made with silica fumes provides high abrasion/erosion resistance. Silica fume influences the rheological properties of the fresh concrete, the strength, porosity and durability of hardened mass. Silica fume concrete with low water content is highly resistant to penetration by chloride ions. Therefore silica fumes is a key ingredient in the preparation of high performance concrete.
A. Silica fume have found their use in shotcrete applications, pumped concrete, mining and chemical industries. The high strength concrete made with silica fumes provides high abrasion/erosion resistance. Silica fume influences the rheological properties of the fresh concrete, the strength, porosity and durability of hardened mass. Silica fume concrete with low water content is highly resistant to penetration by chloride ions. Therefore silica fumes is a key ingredient in the preparation of high performance concrete.

Explanations:

Silica fume have found their use in shotcrete applications, pumped concrete, mining and chemical industries. The high strength concrete made with silica fumes provides high abrasion/erosion resistance. Silica fume influences the rheological properties of the fresh concrete, the strength, porosity and durability of hardened mass. Silica fume concrete with low water content is highly resistant to penetration by chloride ions. Therefore silica fumes is a key ingredient in the preparation of high performance concrete.