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2 cards from this section. Quick, good the night before a test.
What is the purpose of water-reducing admixtures?
Think about how they help us mix concrete.
What does a retarder do in concrete?
Consider situations where slow setting might be useful.
What is the main function of water-reducing admixtures?
Think about what they are specifically designed to do.
True or False: Superplasticizers can reduce water content by up to 30%.
Consider the range they provide.
A construction project in a hot climate requires a large amount of concrete to be poured quickly. What type of chemical admixture would you recommend, and why?
Consider the temperature and how it might affect the concrete setting.
You are tasked with improving the workability of high-performance concrete while reducing water usage. Which admixture would be best suited for this job, and what is its mechanism?
Think about how these additives modify the interactions between concrete materials.
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