Why black soils are treated with cement or hydrated lime during Roadways and railways construction C...........

Geography World - Soil and Vegetation

Download Solution PDF

Why black soils are treated with cement or hydrated lime during Roadways and

railways construction? Consider the reasons

1. To overcome problems of volume changes due to alternate expansion and shrinkage

of soils.

2. To prevent soil erosion during wet season.

3. To improve bearing capacity of the soil.

Choose the correct reason from the codes below.

1&2 only

2&3 only

1&3 only

All of the above

छोटे Courses बड़े Results

Master World - Soil and Vegetation

Prepare through Micro-courses

Try Now

Explanation:

The cement or lime treatment is being utilized for the following purposes:
1. To provide a pavement foundation of marginally weaker in strength than that of
concrete pavement, but much improved strength than natural Black cotton soil (BC
soil).
2. To consolidate subgrades and base courses for concrete pavement in order to make
them resistant to volume changes and displacement or erosion in the presence of
moisture even under the rocking action of curled slabs, if any.
3. To overcome the susceptibility of foundations to volume change
4. and to increase their shearing resistance and bearing capacity.