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2 cards from this section. Quick, good the night before a test.
What is the primary purpose of the lubrication process before concrete pumping?
Think about what happens if lubrication is skipped.
List one reason why lightweight aggregates need preconditioning.
Consider their properties.
What does the lubrication process ensure?
Recall what lubrication does for the pump.
What is the maximum size of aggregate for effective pumping?
Think about the criteria for smooth flow.
Given that an MSA of 30 mm causes frequent blockages in a pumping system, recommend an optimized mix design.
Choose aggregate size wisely to prevent future issues.
Discuss the long-term implications of using aluminum pipes for concrete pumping and propose alternatives.
Consider how material reacts with concrete chemistry.
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