22. Pavement materials: Soil
This chapter discusses the various materials used in pavement construction, focusing primarily on soil and its properties. It emphasizes the importance of understanding soil types and their behaviors under different conditions to ensure adequate pavement performance. Additionally, the chapter elaborates on various tests used to evaluate soil strength and support capabilities, crucial for pavement design.
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21.2.3Tests On Soil
What we have learnt
- Pavement materials, particularly soil, significantly affect stability and durability.
- Different types of soil can be classified and tested for their suitability in pavement construction.
- The California Bearing Ratio (CBR) test and plate bearing test are essential for assessing the strength and support capacity of subgrade soils.
Key Concepts
- -- Subgrade Soil
- The supporting soil beneath the pavement, crucial for providing structural integrity.
- -- California Bearing Ratio (CBR)
- A test that determines the strength of subgrade soil by measuring its resistance to penetration.
- -- Plate Bearing Test
- A method used to evaluate the load-bearing capacity of subgrade soil or pavement layers.
- -- Soil Types
- Different classifications of soil, including gravel, moorum, silts, and clays, each with distinct properties.
- -- Desirable Soil Properties
- Characteristics such as compressibility, stability, drainage, and ease of compaction that are important for soil used in highways.
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