Practice Strength Of Hardened Concrete (9.1) - Topics in Hardened Concrete

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9 questions

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Exercise
6 questions · about 4 min · pass mark 70%. Hints available.
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6 sample questions

Question 1.
Define compressive strength.
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Think about what happens when you push down on concrete.
Question 2.
What is a typical tensile strength of concrete?
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Recall the relationship between tensile and compressive strengths.
3Question 3.
What is the typical range of compressive strength for general construction?
- 15-60 MPa
- 60-100 MPa
- 100-150 MPa
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Recall the specific numeric range mentioned.
4Question 4.
Tensile strength is approximately what percentage of compressive strength?
- True
- False
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Think about the relationship between the two types of strength.
Question 5.
Calculate the expected tensile strength of a concrete mixture with a compressive strength of 50 MPa.
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Use the provided relationship of tensile to compressive strength.
Question 6.
Discuss the impacts on the strength of concrete if the water-cement ratio is increased from 0.4 to 0.6.
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Consider how extra water changes the concrete structure.

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