Basalt Fiber Reinforced Concrete Fatigue Study
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Questions and Answers

Why is studying the fatigue performance of concrete materials important?

  • To increase the ductility of concrete
  • To improve the compressive strength of concrete
  • To enhance the tensile strength of concrete
  • To design anti-fatigue structures (correct)
  • What is the significance of the direct tensile fatigue tests conducted in this study?

  • To explore the effects of fiber content and stress level on the fatigue life of concrete (correct)
  • To analyze the compressive strength of concrete
  • To measure the density of basalt fibers in concrete
  • To investigate the elastic modulus of concrete
  • What is the failure mode of basalt fiber reinforced concrete under cyclic loading?

  • Brittle failure (correct)
  • Tensile failure
  • Shear failure
  • Ductile failure
  • How does the fatigue life of concrete change with an increase in basalt fiber content?

    <p>It first increases and then decreases</p> Signup and view all the answers

    What type of tests are commonly used to study the fatigue performance of basalt fiber reinforced concrete?

    <p>Indirect tensile or compressive strength tests</p> Signup and view all the answers

    How were direct tensile fatigue tests conducted in this study?

    <p>Using a self-developed concrete axial tensile device</p> Signup and view all the answers

    What is the effect of stress level on the fatigue life of basalt fiber concrete?

    <p>The fatigue life decreases with the increase of stress level</p> Signup and view all the answers

    What are the three stages into which the fatigue deformation process of basalt fiber reinforced concrete can be divided?

    <p>The stage of fast strain growth, the stage of uniform strain growth, and the stage of rapid strain growth</p> Signup and view all the answers

    What are some of the dynamic effects on concrete structures mentioned in the text?

    <p>Repeated impacts of waves on oil extraction platforms</p> Signup and view all the answers

    Why is conducting research on the fatigue performance of concrete materials considered significant?

    <p>For the anti-fatigue design of concrete structures</p> Signup and view all the answers

    What is the primary reason for adding fiber materials to concrete?

    <p>To significantly improve the mechanical properties and durability of concrete</p> Signup and view all the answers

    What is a characteristic property of basalt fiber according to the text?

    <p>Produced through environmentally friendly melting process of volcanic rocks</p> Signup and view all the answers

    Which type of fiber reinforced concrete has been increasingly used due to its excellent mechanical properties?

    <p>Basalt fiber reinforced concrete</p> Signup and view all the answers

    What has been achieved by domestic and foreign scholars in the past decade according to the text?

    <p>Relatively rich research results on the fatigue performance of fiber reinforced concrete</p> Signup and view all the answers

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