Civil Engineering (CE) Exam > Civil Engineering (CE) Videos > Transportation Engineering > Soil in Highway Engineering
Soil in Highway Engineering Video Lecture | Transportation Engineering - Civil Engineering (CE)
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FAQs on Soil in Highway Engineering Video Lecture - Transportation Engineering - Civil Engineering (CE)
| 1. What is the role of soil in highway engineering? |  |
Ans. Soil plays a crucial role in highway engineering as it serves as the foundation for road construction. It provides support for the pavement structure, helps in distributing the load from traffic, and aids in drainage. The properties of the soil, such as its strength, compaction, and permeability, are important factors in determining the stability and durability of the highway.
| 2. What are the different types of soil used in highway engineering? | |
Ans. In highway engineering, different types of soil are used based on their properties. Some commonly used soils include:
- Granular soils: These are composed of sand and gravel particles and are often used as base or subbase materials due to their good drainage characteristics.
- Cohesive soils: These soils, such as clay and silt, have fine particles that can retain water. They are used in embankments and subgrades for their high load-bearing capacity.
- Organic soils: These soils are rich in organic matter and are unsuitable for highway construction due to their poor load-bearing capacity and high compressibility.
| 3. How is soil compaction performed in highway engineering? | |
Ans. Soil compaction is a crucial process in highway engineering to increase the density of soil and improve its load-bearing capacity. It involves the use of heavy compaction equipment, such as rollers or vibratory compactors, to reduce air voids and increase soil density. This is achieved by applying repeated mechanical force to the soil layers, ensuring proper compaction and stability of the highway.
| 4. What is the significance of soil testing in highway engineering? | |
Ans. Soil testing is essential in highway engineering to determine the properties and characteristics of the soil. It helps engineers understand the soil's behavior under different loading conditions and design appropriate pavement structures. Soil testing also helps in assessing the compaction requirements, identifying potential soil problems, and selecting suitable soil improvement techniques. This information is crucial for ensuring the durability, stability, and safety of the highway.
| 5. How does soil erosion affect highway engineering? | |
Ans. Soil erosion can have significant impacts on highway engineering. It occurs when the top layer of soil is washed away by water or wind forces. This can lead to the loss of valuable soil material, reduced stability of slopes and embankments, and increased sedimentation in drainage systems. To mitigate soil erosion, erosion control measures such as vegetation, geotextiles, and proper drainage systems are implemented during highway construction. Failure to address soil erosion can result in the deterioration of the highway infrastructure and increased maintenance costs.
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Nov 22, 2024 Last updated |
Video Description: Soil in Highway Engineering for Civil Engineering (CE) 2024 is part of Transportation Engineering preparation.
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