Asphalt and Bitumen Properties Quiz
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Asphalt and Bitumen Properties Quiz

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Questions and Answers

What can cause blistering in asphalt and bitumen layers?

  • Biological agencies
  • Trapped moisture vapor pressure (correct)
  • Direct exposure to moisture
  • Contact with oil
  • Which of the following is true about mastics?

  • They harden with age
  • Remain pliable for a number of years (correct)
  • Can accommodate large structural movements
  • Are only used for small cracks
  • What should be correctly specified and detailed for long term durability of sealants?

  • Poor material preparation
  • Correct gap width, minimum depth, adhesive properties, and surface preparation (correct)
  • Maximum depth
  • High gap width
  • Which material is unacceptable for accommodating the movement associated with large structural elements?

    <p><em>Cement</em></p> Signup and view all the answers

    What metals are commonly used in buildings according to the text?

    <p><em>Steel, aluminium, copper, lead, and zinc</em></p> Signup and view all the answers

    Which of the following is NOT affected by biological agencies or pollution?

    <p><em>Metals</em></p> Signup and view all the answers

    What is a common cause of loss of adhesion in cementitious waterproofing systems?

    <p>Poor surface preparation</p> Signup and view all the answers

    What can lead to the embrittlement of membrane in factory-produced membranes?

    <p>Atmospheric oxidation of the bitumen</p> Signup and view all the answers

    What is a common cause of leakage in polymer roofing?

    <p>Inadequate bonded joints</p> Signup and view all the answers

    What can cause blistering in liquid membranes?

    <p>Expansion of entrapped air or moisture by solar heat</p> Signup and view all the answers

    What issue arises from cracks causing shrinkage deflection in structural substrate panels?

    <p>Loss of adhesion causing a weak undercoat</p> Signup and view all the answers

    What is a likely consequence of improper bonding material in cementitious waterproofing systems?

    <p>Excessive deformation and stresses in the substrate</p> Signup and view all the answers

    What property of bitumen makes it a suitable material for waterproofing?

    <p>Adhesive properties</p> Signup and view all the answers

    How does asphalt react when exposed to sunlight and heat?

    <p>It hardens slowly</p> Signup and view all the answers

    What should be incorporated between asphalt and supporting structure in horizontal situations to allow for differential movements?

    <p>Insulating layer</p> Signup and view all the answers

    To prevent cracking of asphalt due to continuous expansion and contraction, what should be included in vertical applications?

    <p>Screed protection</p> Signup and view all the answers

    What should be specified to lessen the effect of sunlight and solar heat on asphalt?

    <p>Reflective covering with light-colored stone aggregate</p> Signup and view all the answers

    How can mastic asphalt be protected from impact damage?

    <p>By adding a screed or similar coating</p> Signup and view all the answers

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