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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Engineering

Stich

31 October, 09:34

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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Aspen Barry · 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.