Transportation Engineering - Vol 2 | 3. Bituminous mix design by Abraham | Learn Smarter
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3. Bituminous mix design

Bituminous mix design involves determining the proportions of bitumen, fillers, fine, and coarse aggregates to create a mix that is workable, strong, durable, and economical. Key objectives include ensuring durability, strength, flexibility, and workability of the mix, alongside considerations for stability, durability, flexibility, skid resistance, and workability. Various types of mixes, such as well-graded, gap-graded, and open-graded, as well as their respective requirements and compositions, are outlined for effective pavement construction.

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Sections

  • 24

    Bituminous Mix Design

    The section covers the principles and components involved in the design of bituminous mixes for pavement construction, emphasizing workability, durability, and economic efficiency.

    Learning Practice

  • 24.1

    Overview

    The section discusses the objectives and components of bituminous mix design, highlighting its significance in producing durable and economical pavements.

    Learning Practice

  • 24.2

    Evolution Of Road Surface

    This section discusses the historical development of road surfaces from unsurfaced pathways to advanced asphaltic concrete.

    Learning Practice

  • 24.2.1

    Objectives Of Mix Design

    The objectives of mix design aim to ensure a durable and workable bituminous pavement mix through proper component proportioning.

    Learning Practice

  • 24.2.2

    Constituents Of A Mix

    This section outlines the primary components of bituminous mixes, which include coarse aggregates, fine aggregates, fillers, and binders, emphasizing their respective roles in mix performance and durability.

    Learning Practice

  • 24.2.3

    Types Of Mix

    This section discusses the different types of bituminous mixes used in road construction, highlighting their characteristics and applications.

    Learning Practice

  • 24.2.4

    Different Layers In A Pavement

    This section outlines the different layers that make up a pavement structure, including the bituminous base course, binder course, and asphaltic concrete.

    Learning Practice

  • 24.3

    Requirements Of Bituminous Mixes

    This section outlines the essential requirements for effective bituminous mixes, including stability, durability, flexibility, skid resistance, and workability.

    Learning Practice

  • 24.3.1

    Stability

    Stability refers to the ability of a paving mix to resist deformation under traffic loads, influenced by inter-particle friction and binder content.

    Learning Practice

  • 24.3.2

    Durability

    Durability in bituminous mixes refers to their resistance against weathering and abrasion.

    Learning Practice

  • 24.3.3

    Flexibility

    Flexibility in bituminous mix design refers to the capacity of asphalt to bend under load and prevent cracking.

    Learning Practice

  • 24.3.4

    Skid Resistance

    Skid resistance refers to the ability of a finished pavement to resist skidding, determined by the surface texture and bitumen content.

    Learning Practice

  • 24.3.5

    Workability

    Workability refers to the ease with which a bituminous mix can be laid, compacted, and shaped.

    Learning Practice

  • 24.3.6

    Desirable Properties

    The desirable properties of a bituminous mix include stability, flexibility, and workability that cater to traffic demands.

    Learning Practice

  • 24.4

    Summary

    This section outlines the key characteristics and components required for effective bituminous mix design.

    Learning Practice

  • 24.5

    Problems

    This section addresses various problems associated with bituminous mix design.

    Learning Practice

References

24.pdf

Class Notes

Memorization

What we have learnt

  • The bituminous mix design e...
  • Different types of mix desi...
  • Desirable characteristics o...

Final Test

Revision Tests