How do you stabilize black cotton soil?

How do you stabilize black cotton soil?

The most common and most widely used method for doing so is the addition of lime. It has been observed that the addition of lime to soil improves the engineering properties of the soil as a result of cation exchange, flocculation and pozzolanic reaction (Narasimha and Rajasekaran, 1996).

What are the problems of foundations on black cotton soil?

Black cotton soils and other expansive soils have typical characteristics of shrinkage and swelling due to moisture movement through them. Black cotton soils and other expansive soils are dangerous due to their shrinkage and swelling characteristics.

Which type of stabilization is best for black cotton soil?

Based on the soaked CBR tests on black cotton soil, 4% lime content is taken as optimum lime content for stabilization as the soaked CBR value for 4% lime content is higher compared to that of other contents of lime.

In which course can additive be added with lime to stabilize black cotton soil?

8. In which course can additives be added with lime stabilized black cotton soil? Clarification: Subgrade is treated with a small amount of lime. Then the sub0base is treated with 4-6% of lime and compacted well.

How can black cotton soil be improved for farming?

  1. Amending Clay Soil. The main aim of amending black cotton soil is to improve the structure of the soil.
  2. Watering Clay Soil. Your soil’s ability to absorb and retain water is closely related to its composition.
  3. Tilling Clay Soil. Tilling is the initial critical step in soil preparation.
  4. Plants for Clay Soil.

What is the plastic limit of black cotton soil?

The test shows the Liquid limit for BC Soil samples are ranging 55-60 and Plastic Limit for the same ranges 30-40. Thus Plasticity Index of BC Soil found to the range of 20-35. At the liquid limit, the volume change is of the order of 200 to 300% and results in swelling pressure as high as 8 kg/cm2 to 10 kg/cm2.

How can we increase the bearing capacity of black cotton soil?

The following techniques can be used for improving bearing capacity of soil as per the site condition.

  1. Increasing depth of foundation.
  2. Draining the soil.
  3. Compacting the soil.
  4. Confining the soil.
  5. Replacing the poor soil.
  6. Using grouting material.
  7. Stabilizing the soil with chemicals.

What is the safe bearing capacity of black cotton soil?

Detailed Solution

Types of Soil Bearing Capacity (kg/m2) Bearing Capacity (kN/m2)
Black cotton soil 15000 150
Moist clay and sand clay Mixture 15000 150
Loose gravel 25000 250
Medium clay 25000 250

How can we use black soil?

This type of soil is used for rice, wheat, sugarcane, and cotton. It is additionally used to produce groundnut, millet, and oilseeds. Black soil is ideal for growing crops that are cotton, sugarcane, tobacco, wheat, millets, and oilseeds. Black soil is to be the best variety of soil for the cultivation of cotton.

Which crop is best for black soil?

A Wheat.

  • B Groundnut.
  • C Cotton. Wheat, Groundnut and cotton are few of the crops which require black soil for their growth. Cotton requires highly fertile black soil for maximum production. Groundnuts require moderate black sand mixed soils for growth. Wheat is grown in black and loamy soils.
  • Why does black cotton soil swell?

    The black cotton soils contain the Montmorillonite as a clay mineral, which causes the swelling nature in soil, due to water bond between the particles of soil.

    Is black cotton soil good for construction?

    Of India. Black cotton soil, a cohesive soil, is considered a problematic soil for civil engineers. It has characteristics of swelling during rains and shrinking during summer. In both the conditions, it poses problems.

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