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5 cards from this section. Quick, good the night before a test.
What is the main purpose of a surface vibrator?
Think about its main function based on its name.
Why should we avoid using surface vibrators on concrete with high workability?
Consider what happens to materials when they are vibrated too much.
What is the primary function of a surface vibrator?
Think about what a vibrator does with the concrete.
True or False: Surface vibrators are more effective than internal vibrators.
Consider where and how each vibrator operates.
You are tasked with finishing a concrete slab that has an expected thickness of 200 mm. Discuss how you would approach its finishing, considering the limitations of various vibratory methods.
What depth limits apply to different vibrator types?
You have a highly workable concrete mixture (slump of 80 mm) for a floor slab. What steps would you recommend for finishing this concrete to avoid weakness?
Consider what happens with high workability during finishing.
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