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Questions and Answers
How does an increase in water-cement ratio affect the strength of concrete?
How does an increase in water-cement ratio affect the strength of concrete?
- It has no effect on the strength
- It decreases the strength of concrete (correct)
- It enhances the durability of concrete
- It increases the strength of concrete
What is the impact of higher water-cement ratios on the durability of concrete?
What is the impact of higher water-cement ratios on the durability of concrete?
- It reduces the risk of chemical attack
- It decreases permeability
- It increases permeability (correct)
- It enhances freeze-thaw resistance
How does proper compaction affect the strength of concrete?
How does proper compaction affect the strength of concrete?
- It increases the density and compressive strength of concrete (correct)
- It reduces the density of concrete
- It decreases compressive strength
- It has no impact on the strength of concrete
What is the role of air-entraining admixture in winter construction?
What is the role of air-entraining admixture in winter construction?
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What is the purpose of including air-entraining admixtures in concrete during winter construction?
What is the purpose of including air-entraining admixtures in concrete during winter construction?
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What does a higher slump value indicate in the context of concrete workability?
What does a higher slump value indicate in the context of concrete workability?
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Why is Douglas Fir recommended for structural applications in timber framing?
Why is Douglas Fir recommended for structural applications in timber framing?
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What is the importance of aggregates grading in concrete mixture?
What is the importance of aggregates grading in concrete mixture?
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What are surface coatings such as epoxies and polymer-modified overlays used for in refurbishment?
What are surface coatings such as epoxies and polymer-modified overlays used for in refurbishment?
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