Creep of Concrete

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Questions and Answers

What is the definition of 'creep' in concrete?

  • Deformations of concrete only under self-weight
  • Deformations of concrete under temporary loads
  • Time dependent deformations of concrete under permanent loads (correct)
  • Immediate deformations of concrete under permanent loads

Which type of load causes creep in concrete?

  • Intermittent loads
  • Temporary loads
  • Permanent loads (correct)
  • Cyclic loads

What is the main factor influencing the creep of concrete?

  • Permanent loads (correct)
  • Humidity levels
  • Temporary loads
  • Temperature changes

How would you describe the deformations in concrete under creep?

<p>Time-dependent and permanent (C)</p> Signup and view all the answers

Which factor does NOT play a significant role in influencing the creep of concrete?

<p>Cyclic loads (C)</p> Signup and view all the answers

How does creep behave as the relative humidity decreases?

<p>Creep increases (B)</p> Signup and view all the answers

What is the relationship between ambient relative humidity and creep?

<p>Creep increases as humidity decreases (A)</p> Signup and view all the answers

In what way does creep respond to changes in relative humidity?

<p>Creep increases (A)</p> Signup and view all the answers

What happens to creep when relative humidity rises?

<p>Creep remains constant (C)</p> Signup and view all the answers

How is creep affected by higher levels of relative humidity?

<p>Creep increases (D)</p> Signup and view all the answers

What happens to creep as the water-cement ratio increases?

<p>Creep increases (B)</p> Signup and view all the answers

What happens to concrete if the load is maintained for a considerable period of time?

<p>It undergoes additional deformations. (A)</p> Signup and view all the answers

How does the age of concrete affect the rate of creep?

<p>The rate of creep rapidly decreases with time (B)</p> Signup and view all the answers

How does concrete behave when subjected to a constant load over time?

<p>It experiences additional deformations. (D)</p> Signup and view all the answers

What effect does a high water-cement ratio have on the strength of concrete?

<p>Decreases strength (A)</p> Signup and view all the answers

What change occurs in concrete if the load is kept constant for an extended period?

<p>It undergoes creep deformation. (A)</p> Signup and view all the answers

How does the rate of creep change with low w/c ratio?

<p>Decreases (A)</p> Signup and view all the answers

If a load is applied to concrete for a long time, what deformation can be expected?

<p>Creep deformation (C)</p> Signup and view all the answers

What impact does the age of concrete have on its durability?

<p>Improves durability (A)</p> Signup and view all the answers

What is the result of maintaining a load on concrete without any change for an extended period of time?

<p>Additional deformations (A)</p> Signup and view all the answers

How does creep affect internal stresses in concrete structures?

<p>Reduces them (B)</p> Signup and view all the answers

What is the impact of creep on the occurrence of cracking in concrete structures?

<p>Decreases cracking (D)</p> Signup and view all the answers

How does nonuniform shrinkage contribute to the reduction of cracking in concrete structures?

<p>It helps reduce cracking (A)</p> Signup and view all the answers

What is one of the benefits of creep in concrete structures?

<p>Reduces internal stresses (D)</p> Signup and view all the answers

How does creep contribute to the overall durability of concrete structures?

<p>Improves long-term performance (B)</p> Signup and view all the answers

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