Describe the different particle shapes and surface textures of aggregate and discuss their importance: Engineering Assignment, OU, UK

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  • Describe the different particle shapes and surface textures of aggregate and discuss their importance.
  • Discuss and evaluate why knowledge of the particle size distribution of aggregate samples would be useful to materials engineering, particularly when making concrete.
  • Describe and discuss the grading of fine and coarse aggregate in accordance with the current BS. What is a gap-graded aggregate and what are its influences on the performance of concrete?
  • Describe and discuss the different conditions of moisture in aggregate:
    (i) bone-dry,
    (ii) air-dry,
    (iii) saturated surface dried, and
    (iv) wet. Discuss the influence of the moisture content of aggregates on the performance of hardened concrete.
  • Aggregate has pores and its porosity and absorption influence the performance of hardened concrete. Discuss in detail this statement.