1. By :
ANKIT KUMAR

2. soil stabilized roads
 Step1 Stabilization
Soil stabilization is the process whereby soil and related
materials are made stronger and more durable by mixing
with stabilizing agents. The common method to achieve
soil stabilization are:
a) Stabilization by compaction
b) Mechanical stabilization
c) Stabilizing by the use of stabilizing additives like
cement, lime, bitumen and many other stabilizers available
in the market. Alternatively, you may use TopSeal-
SoilStabilizer a Soil Stabilizer & Strengthener.
 100% Environmentally safe
Non-toxic, non-flammable non-corrosive, non-allergenic
Water-based liquid form

4. Step 2 SeaIing

The stabilized soil surface is then sealed with TopSeal SOIL
SEALANT, providing a waterproof layer to prevent rain water
penetration into the soil and keep the road in condition at all
times. A stabilized soil road in dry condition will perform in its
best condition with TopSeal Soil Sealant covered on soil
surface, making it dust free and mud free at all times.
 Waterproof.
No erosion by rainwater & traffic
Maintain soil/gravel road strength even during rainy seasons
Dust & mud free
Minimum maintenance
Not slippery, overcoming hilly road problems
Seal stabilized soil surface using Top Seal Soil Sealant

6. Step 3Maintenance
 Patching any pothole or depression by mixing roadside
soil with TopSeal-SoilStabilizer, followed by sealing
a layer of TopSeal Soil Sealant on the affected area.
Maintenance can be done as and when required for
long-lasting road.
Pothole & Depression Maintenance

8. Geo-synthetic Road
Geosynthetics are a class of building materials, which
differ in structure, technology, performance
characteristics, composition of raw materials. They are
united by a convenient form of delivery
(rolls, blocks, tiles), the ability to ensure a high quality
geosynthetic materials in factory-built, that is, the
ability to create additional layers (strata) of assured
quality at the lowest labor costs for job site and
minimum relative transport costs.

9.  The advantages of prestressed concrete have been
known for some time. But the technique of
prestressing concrete for highway use has presented
problems. And although many authorities believe that
a prestressed concrete highway should have many
advantages over a conventional road, the problem has
been to find economical method of building it.

10. PRESTRESSED CONCRETE
 Prestressed concrete, invented by Eugene
Frevssinet in 1928 is a method for overcoming
concrete’’s natural weakness in tension . It can
be used to produce beams , floors or bridges
with a longer span than is practical with
ordinary reinforced concrete.
 It can be accomplished in three ways: pre-
tensioned concrete, and bonded or unbonded.
Pre-tensioned concrete
 Pre-tensioned concrete is cast around already
tensioned tendons.
 This method produces a good bond between the
tendon and concrete, which both protects the tendon
from corrosion and allows for direct transfer of
tension.
 The cured concrete adheres and bonds to the bars and
when the tension is released it is transferred to the
concrete as compression by static friction.
 However, it requires stout anchoring points between
which the tendon is to be stretched and the tendons
are usually in a straight line.
 Thus, most pretensioned concrete elements are
prefabricated in a factory and must be transported to
the construction site, which limits their size.
 Pre-tensioned elements may be balcony
elements, lintels , floor slabs, beams or foundation
piles.

11. PRESTRESSED CONCRETE
 PRINCIPLE – Using high tensile strength
steel alloys producing permanent pre-
compression in areas subjected to
Tension.
 A portion of tensile stress is counteracted
thereby reducing the cross-sectional area
of the steel reinforcement .
 METHODS :- a) Pretensioning
b)Post-tensioning
 PRETENSIONING :- Placing of concrete
around reinforcing tendons that have been
stressed to the desired degree.
 POST-TENSIONING :- Reinforcing
tendons are stretched by jacks whilst
keeping them in serted in voids left pre-
hand during curing of concrete.
 These spaces are then pumped full of
grout to bond steel tightly to the concrete.
STEEL BARS BEING
STRETCHED BY JACKS

12. THANK YOU
ANKIT KUMAR
CIVIL – 6B1