This document summarizes a technical seminar on soil stabilization using lime and polypropylene fibers. It discusses how soil stabilization helps strengthen soil to support structures by improving properties. The literature review examines previous research on using waste fibers for geotechnical applications. Details are provided on the materials used, including black cotton soil, lime, and polypropylene fibers. A series of experiments are outlined to determine the effects of different fiber percentages on soil properties like density, moisture content, and strength. The conclusion indicates that adding polypropylene fibers increases the strength of black cotton soil.

1. Technical seminar on
Soil stabilization using Lime & polypropylene
Fiber Material
by
M. HARISH & P

2. CONTENTS
1.Introduction
2.Literature review
3.Detail study of topic
4.conclusion

3. 1.Introduction
➢ For any land-based structure, the foundation is very
important and has to be strong to support the entir
structure.
➢ The process of soil stabilization helps to achieve the
required properties in a soil needed for the construction
work.
➢ soil stabilization has been done with the help of
randomly distributed polypropylene fibers obtained from
waste materials.

4. 2.Literature review
“Soil Stabilization Using Waste Fiber Materials”, and
investigated the use of waste fiber materials in
geotechnical applications and to evaluate the effects of
waste polypropylene fibers on shear
strength of unsaturated soil by carrying out direct shear
tests and unconfined compression tests ,
Based on Specific gravity of a soil-With mixing of 0.05%
fibers (PPF) specific gravity of the soil increases by 0.3%.
Strength of the soil is directly proportional to specific
gravity.

5. 3.Detail study of topice
3.1 Materials
Block cotton soil: Block cotton soil (BC soil) is a highly clayey
soil. They are of variable thickness, underlain by black sticky
material known as “Block soil”. Black cotton soil when comes in
contact with water it either swells or shrinks.
lime: Calcium oxide is a white crystalline solid with amelting point
of 2572c. It is manufactured by heating limestone , which are
mainly CaCO3 to drive off carbon dioxide. By using lime in the
method of soil stabilization it mainly increases strength and
reduces the swells or shrinks

6. .Polypropylene fiber:
Physical and chemical properties
Unit weight - 0.91 g/cm3
Average diameter - 0.034 mm
Average lenth - 12 mm
tensile strength- 350 M Pa
Burning point - 590 °C
Acid and alkali resistance

7. ,Preparation of samples:
The following steps are carried out while mixing the fiber to
the
1. All the soil samples are compacted at their respective
maximum dry density (MDD) and optimum moisture
content
(OMC) corresponding to the standard proctor compaction
test.
2. Content of fiber in the soil is depends on the weight of
soil we
have taken for conducting tests.
3. The different values adopted in the present study for the
percentage of fiber reinforcement are 0%, 0.25%, 0.5%,
0.75%, and 1% and lime is added constant about 4% for
different percentages of fiber.

8. .
EXPERIMENTAL INVESTIGATION:
Scope of work:.
The experimental work consists of the following steps:
1. Determine the specific gravity of the soil.
2. Determination of soil index properties
i. Liquid limit ,
ii. Plastic limit.
3. Particle size distribution by sieve analysis.
4. Determination of the maximum dry density (MDD) and the
corresponding optimum moisture content (OMC) of the soil
by compaction test.
5. Determination of strength by;
i. Unconfined compression test (UCS).
ii. Direct shear test (DST).

9. .steps involved in the experiments
Specific gravity of the soil: The specific gravity of the soil
is ratio between weight of the solids and weight of equal
volume of water. It is measured by the help of a volumetric
flask in a very simple experimental setup where the volume
of the soil if found out and its weight is divided by the
weight of equal volume of water. The specific gravity is
denoted by “G”.
Liquid limit : It is the water content of the soil between
liquid state and plastic state of the soil. It can be defined as
the minimum water content at which the soil, though in
liquid state, shows small shearing against

10. .
Particle size distribution by sieve analysis: The distribution
of particles of different sizes determines many physical
properties such as its strength, permeability, density etc.
Particle size distribution is done by sieve analysis which is
done only for coarse grained soils.
Proctor compaction test: The compaction process helps
in increasing the bulk density by removing of air from the
voids. The dry density depends upon the moisture content
in the soil. The maximum dry density (MDD) is achieved
when the soil is compacted at relatively high moisture
content and almost all the air is driven out, this moisture
content is called optimum moisture content.

11. .Needs And advantades:
➢ it improves the strength of the soil and incresing bearing
capacity of the soil
➢ It is more economical both in terms of cost and energy
to increase the bearing capacity of the soil ,
➢ It is also used to provide more stability to the soil in
slopes or other such places.
➢ Sometimes soil stabilization is also used to prevent soil
erosion
➢ Stabilization improves the workability and durability of
the soil

12. .4 . CONCLUSION:
This study investigated the effect of adding polypropylene
fiber and strength behaviour of black cotton soil ,The effect
of fiber reinforcement on black cotton soil was studied by
conducted diffrent tests , liquid limit, compaction and
unconfined compression test.
References:
1.Satyam Tiwari, (2016), “Soil stabilization using waste
fiber
materials”, IJITR journal, vol 04, No. 3, (2927-293MR.)
2.Naranagowda M J, et al (2016), “Effect of polypropylene
fiber on stability of expansive soil”, IJER journal, vol 05, No.
8, (651-653).