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2 cards from this section. Quick, good the night before a test.
What is the purpose of consolidating concrete?
Think about what happens to air bubbles in concrete.
Define an internal vibrator.
What are its other names?
What is the primary purpose of using vibrators in concrete?
Think of the air as a weakness in concrete.
True or False: Internal vibrators are also known as external vibrators.
Consider their placement!
You have a construction site needing a continuous pour of concrete. Discuss the strategy around choosing and using the right internal vibrator for different sections of the pour.
Think about what changes you might need for congested areas.
Calculate the radius of influence for a vibrator with a diameter of 40mm and discuss how it affects productivity.
Consider the formula radius as a function of diameter!
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