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

University	University of Oxford (UO)
Subject	Engineering

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.

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