This document discusses the use of bitumen in road construction. It notes that bitumen has unique properties that make it suitable for use in flexible roads. There are four main types of bitumen: paving grade, modified, cutback, and emulsion. The document outlines several factors that influence how bitumen hardens over time when used in roads, including oxidation, loss of volatiles, and physical hardening. It lists some advantages as a smooth ride surface, quick repair ability, staged construction, lower life costs, and temperature resistance. Disadvantages include less durability, lower tensile strength compared to concrete, and higher construction costs during extreme temperatures.

1. GROUND IMPROVEMENT
TECHNIQUES
SEMINARTOPIC:-BITUMEN
GUIDE BY : SUNIL HALDANKAR DONE BY : SOUJITH K P
4MW16CV410

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5. Why is Bitumen Used in Road Construction?
• Bitumen gain certain unique properties that are inbuilt in it
during its manufacture.The bitumen as a raw material in flexible
road construction and bitumen as a mix (composing other
materials i.e. aggregates/ pozzolans) serves certain advantages,
that prompt to use bitumen widely in road construction.
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6. TYPES
1) PAVING GRADE BITUMEN
2) MODIFIED BITUMEN
3) CUTBACK BITUMEN
4) BITUMEN EMULSION
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7. Factors Influencing Bitumen
• Oxidative hardening: ...
• Hardening due to loss of volatiles: ...
• Physical hardening: ...
• Exudative hardening: ...
• Hardening of bitumen during storage: ...
• Hardening of bitumen on road
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29. Advantages of Bitumen
• A smooth Ride Surface
• Quick Repair
• Staged Construction
• Life Cost is Less
• Temperature Resistant
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30. Disadvantages of Bitumen
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•Bituminous pavements are less durable
•Low tensile strength compared to concrete pavement
•Cost of construction high during extreme conditions of temperature
•Bitumen with impurities can cause pollution to soil

31. THANK U…
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