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Q: The lower water–cement ratio of concrete produces...................
  • A. More density
  • B. Small creep and shrinkage
  • C. More bond
  • D. All options are correct
Correct Answer: Option D - Water - cement ratio of 0.45 to 0.60 are more typically used for higher strength concrete, lower ratio are used, along with a plasticizer to increase flowability. To much water will result in segregation of the sand and aggregate components from the cement paste. The lower water-cement ratio of concrete have more density, small creep and shrinkage and more bond.
D. Water - cement ratio of 0.45 to 0.60 are more typically used for higher strength concrete, lower ratio are used, along with a plasticizer to increase flowability. To much water will result in segregation of the sand and aggregate components from the cement paste. The lower water-cement ratio of concrete have more density, small creep and shrinkage and more bond.

Explanations:

Water - cement ratio of 0.45 to 0.60 are more typically used for higher strength concrete, lower ratio are used, along with a plasticizer to increase flowability. To much water will result in segregation of the sand and aggregate components from the cement paste. The lower water-cement ratio of concrete have more density, small creep and shrinkage and more bond.