Fresh Properties of Ultra-High-Performance Concrete Quiz
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Questions and Answers

What was the focus of the study on ultra-high-performance concrete (UHPC) enhanced with nanosilica?

  • Studying the impact of water-binder ratio on compressive strength
  • Optimizing the sand-binder ratio for flowability
  • Analyzing the setting time of UHPC with nanosilica
  • Investigating the effects of nanosilica and high chemical admixture dosages on rheological properties (correct)

    • What approach was employed to predict and optimize the properties of UHPC enhanced with nanosilica?

  • Statistical analysis approach
  • Empirical testing approach
  • Factorial design approach (correct)
  • Theoretical modeling approach

    • What issue can high chemical admixture dosages in UHPC mixtures potentially cause?

  • Slowing down early cement hydration (correct)
  • Reducing water demand
  • Shortening the setting time
  • Accelerating early cement hydration

    • What was the purpose of investigating the water-binder ratio (W/B) and sand-binder (s/b) ratio in the study?

    <p>To obtain the best flowability, setting time, and compressive strength</p> Signup and view all the answers

    What does the study represent an attempt to do?

    <p>Modeling and optimizing UHPC properties with nanosilica</p> Signup and view all the answers

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