a. Explain about the role of microtexture and macrotexture on pavement surface. b. Explain what are the advantages and disadvantages of using gap graded aggregates, well graded aggregates, andunifomly graded aggregates. Also, explain how the usage of each grading affects the pavement design.

a. Explain about the role of microtexture and macrotexture on pavement surface. b. Explain what are the advantages and disadvantages of using gap graded aggregates, well graded aggregates, andunifomly graded aggregates. Also, explain how the usage of each grading affects the pavement design.

Traffic and Highway Engineering

5th Edition

ISBN:9781305156241

Author:Garber, Nicholas J.

Publisher:Garber, Nicholas J.

Chapter20: Design Of Rigid Pavements

Section: Chapter Questions

Problem 6P

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Concept explainers

Properties of Aluminium

Aluminum (or Aluminum) is a silvery-white in color metal. The chemical symbol of aluminum is Al and it has an atomic number (Z) of 13 in the periodic table. The aluminum name for this metal is derived from the Latin word ‘alumen’, which means bitter salt. Aluminum was discovered in the year 1825 by Hans Oersted, and later Friedrich Wöhler isolated aluminum. It is the most commonly found metal in the earth’s core, which is around 8% of the total core mass. Moreover, it is the third most commonly found element on earth after oxygen and silicon. Electron distribution of aluminum per shell is 2, 8, and 3 with a valency of 3. Atomic weight is nearly 26.9815 u.

Question

Please answer part a,b

1.
a. Explain about the role of microtexture and macrotexture on pavement surface.
b. Explain what are the advantages anddisa dvantages of using gap graded aggregates, well
graded aggregates, andunifomly graded aggregates. Also, explain howthe usage of each
gra ding affects the pavement designm.

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