Impact of Waste Materials on Cement and Concrete Properties
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Questions and Answers

What has been a hindrance to studying fly ash composition in the past?

  • Excessive knowledge of mineralogical analysis techniques
  • Availability of reliable methodologies
  • Increased number of studies
  • A lack of quantitative analytical data (correct)

    • Which research group developed reliable methodologies for mineral quantification?

  • Manz
  • Winborn et al. (correct)
  • Dhir
  • Ward and French

    • What is the classification of Pulverized Fuel Ash based on its lime content?

  • Sialic and Calcic ashes
  • ASTM class F and C fly ashes (correct)
  • Spherical particles
  • Fly ash and C ash

    • Which method of classification for fly ash was proposed by Roy et al.?

    <p>Sialic, Calcic, and Ferric</p> Signup and view all the answers

    What are the three major groups of oxides defined in the text?

    <p>Sialic, Calcic, and Ferric</p> Signup and view all the answers

    What is the typical size range of the spherical particles in fly ash?

    <p>Less than 1 mm to 300 mm</p> Signup and view all the answers

    Which classes are defined next to the three major classes on the ternary diagram?

    <p>(Ferrocalcic, Ferrosialic, Calsialic)</p> Signup and view all the answers

    What do the spherical particles in fly ash form upon?

    <p>Rapid cooling of viscous droplets</p> Signup and view all the answers

    What is the alternative classification proposed by Roy et al. called?

    <p>SiO2 + Al2O3 + TiO2 (sialic); CaO + MgO + Na2O + K2O + (BaO) (calcic); Fe2O3 + MnO + P2O5 + SO3 (ferric)</p> Signup and view all the answers

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