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Questions and Answers
What is the purpose of using a tube sampler for sampling cement?
What is the purpose of using a tube sampler for sampling cement?
- To ensure accurate measurement of the density of the cement
- To prevent contamination during sampling (correct)
- To speed up the sampling process
- To reduce the cost of sampling
Why is kerosene or naphtha recommended for use in specific gravity/density testing of cement?
Why is kerosene or naphtha recommended for use in specific gravity/density testing of cement?
- To provide color contrast for better visibility
- To decrease the density of the cement
- To ensure the liquid does not react with the cement (correct)
- To increase the density of the cement
How is the Le Chatelier flask required for specific gravity/density testing of cement described?
How is the Le Chatelier flask required for specific gravity/density testing of cement described?
- Must have a wide neck for easy pouring
- The glass stopper must be made of plastic
- Square in cross-section
- Should be chemically resistant and transparent (correct)
What is the purpose of ensuring the flasks are thoroughly annealed before being graduated?
What is the purpose of ensuring the flasks are thoroughly annealed before being graduated?
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What is the importance of having small thermal hysteresis in the Le Chatelier flask?
What is the importance of having small thermal hysteresis in the Le Chatelier flask?
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How does using a balance/weighing scale with a sensitivity of 0.05 g contribute to accurate density measurements?
How does using a balance/weighing scale with a sensitivity of 0.05 g contribute to accurate density measurements?
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