Building Materials Questions

• Building materials—mortar composition: In a standard cement mortar used for masonry, which ingredient acts as the binding material that holds the sand particles together after hydration?
• Cupola furnace practice for foundry: For melting approximately one tonne (1,000 kg) of cast iron in a conventional cupola, which of the following material and air requirements are commonly cited together?
• Ferrous materials—composition identification: Wrought iron typically contains carbon in which approximate range by percentage?
• Engineering geology—rock classification: Quartzite belongs to which category based on its origin and transformation history?
• Concrete technology—selecting correct statements: Which of the following statements about concrete materials and joints are valid in standard practice?
• Polymer science—effect of polymerization: Increasing the degree of polymerization (and appropriate crosslinking where relevant) most commonly improves which mechanical properties of engineering polymers?
• Ironmaking—Bessemer steelmaking feedstock: The variety of pig iron preferred for use in the Bessemer converter process is known by which specific name?
• In engineering geology, identify the polymineralic rock (i.e., a rock composed of multiple distinct minerals) from the following list of common materials.
• Metallurgy application — vanadium steel is commonly selected for which automotive or machine components due to its high strength, fatigue resistance, and toughness?
• Cementitious by-products — identify the principal constituent of power-plant fly ash commonly utilized in concrete and pozzolanic blends.
• Timber pathology — due to the biological attack known as dry rot, what characteristic degradation is observed in affected wood components?
• Polymer science — elastomers (rubber-like polymers) can typically be stretched up to approximately what multiple of their original dimensions and still recover substantially on unloading?
• Polymerization mechanisms — in condensation (step-growth) polymerization, which of the following statements about by-product evolution and mass balance is correct?
• Properties of asbestos cement products — which of the following statements correctly describe typical behaviour of asbestos–cement sheets and pipes in service?
• Classification of ferrous materials — based on chemical composition and mechanical properties, iron-based materials are grouped into which of the following categories?
• Igneous petrology — select the hypabyssal (subvolcanic) rock from the list, i.e., an intrusive rock that solidified at shallow depth with typically medium grain size.
• Ironmaking — identify the variety of pig iron typically used as the charge stock for manufacturing wrought iron in traditional processes.
• Fibre glass
• Brittleness of cold is due to an excess of
• The process of manufacturing steel by heating short lengths of wrought iron bars mixed with charcoal in fire clay crucibles and collecting the molten iron into moulds, is known as