Podcast
Questions and Answers
What is the primary characteristic of a fresh concrete mix in terms of placeability?
What is the primary characteristic of a fresh concrete mix in terms of placeability?
- Density
- Strength
- Consistency and workability (correct)
- Durability
What is the ratio of cement, sand, and coarse aggregate for very high strength concrete mixes?
What is the ratio of cement, sand, and coarse aggregate for very high strength concrete mixes?
- 1:3:6
- 1:1.2:2.4 (correct)
- 1:2:4
- 1:1.5:3
Which method of testing is used in the American Standard?
Which method of testing is used in the American Standard?
- Cube Testing
- Tensile Testing
- Cylinder Testing (correct)
- Compression Testing
What is the advantage of machine mixing over hand mixing?
What is the advantage of machine mixing over hand mixing?
What is the recommended minimum mixing time for concrete?
What is the recommended minimum mixing time for concrete?
What percentage of the mixing water should be placed in the drum before adding dry materials?
What percentage of the mixing water should be placed in the drum before adding dry materials?
What is the primary reason why concrete requires tension reinforcement?
What is the primary reason why concrete requires tension reinforcement?
What is the term used to describe the ability of freshly mixed concrete to flow?
What is the term used to describe the ability of freshly mixed concrete to flow?
Why is concrete considered a heavy material?
Why is concrete considered a heavy material?
What is the purpose of using forms, falsework, and shoring during concrete construction?
What is the purpose of using forms, falsework, and shoring during concrete construction?
What is a common issue that can affect the quality of concrete?
What is a common issue that can affect the quality of concrete?
What is the primary economic advantage of using concrete in construction?
What is the primary economic advantage of using concrete in construction?
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