At a given water-cement ratio, either a change in the cement content or aggregate grading can be made to increase the consistency of a concrete mixture. Which one of the two options would you recommend? Why is it not desirable to produce concrete mixtures of a higher consistency than necessary?

Question

Engineering

Joshua Coffey

17 March, 02:40

At a given water-cement ratio, either a change in the cement content or aggregate grading can be made to increase the consistency of a concrete mixture. Which one of the two options would you recommend? Why is it not desirable to produce concrete mixtures of a higher consistency than necessary?

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Answers (1)

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Courtney · Answer 1

Change in aggregate grading

Explanation:

Changing aggregate grading increases the quality of aggregate by having grading closer to the fuller curve used in the concrete design and proportioning of various sizes of aggregates. Normally, consistency is seen during pouring of concrete hence if concrete mix has high consistency, it presents problem in workability hence flow is interfered with. The slump may be too low leading to low flow.