Amit Pawar (Proj. Scprt)

8/8/2019 Amit Pawar (Proj. Scprt)

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MODERN TECHNOLOGY AND CONSTRUCTION METHODS:

SOIL STABILISATION

SUB SURFACE DRAINAGE

USE OF MODIFIED BITUMEN

USE OF WATER BASED EMULSION

USE OF FLY ASH IN CONCRETE

REINFORCED EARTH WALL

QUALITY ASSURANCE CONCEPT

ECONOMICAL DESIGN USING MODERN TECHNOLOGY

MODERN TECHNOLOGY FOR CONSTRUCTION METHODS:

USE OF WATER BASED EMULSION

Bitumen emulsion is a liquid product in which bitumen is

suspended in a finely divided condition in an aqueous

medium and stabilized by suitable material

SOIL STABILISATION

using lime, concrete or ash to convert poorer soils into

a strong impermeable medium. SUB SURFACE DRAINAGE

Mapping subsurface drainage with infrared aerial

photographs

USE OF MODIFIED BITUMEN

Certain additives or blend of additives called as

bitumen modifiers can improve properties of Bitumen

and bituminous mixes. Bitumen treated with these

modifiers is known as modified bitumen USE OF FLY ASH IN CONCRETE

Fly ash, a residue of burning coal / lignite at thermal

power stations, has generally been considered as a

waste material is becoming resource material.


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Fly Ash based concrete

Fly ash, a residue of burning coal / lignite at thermal power

stations, has generally been considered as a waste material

is becoming resource material.

Following fly ash based innovative and commonly produced

building products are available in India

Cellular Light Weight Concrete (CLC) blocks.

Fly Ash Based Polymer Composites as Wood

substitute. Fly ash based Portland Pozzolana Cement.

Ready mixed fly ash concrete.

Fly ash Sand Lime Gypsum (Cement)

Bricks/Blocks.

Clay Fly Ash Bricks

Advantages of Fly Ash based concrete

Reduced heat of hydration.

Improved workability & Ease of pumping.

Superior microstructure leading to lower

permeability.

Higher long term strength.

Better performance in aggressive environment.

Higher Electrical Resistivity leading to lesser

chances of reinforcement corrosion


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Green Roads:

The rural roads constructed through the RCIW Programme use

Green Road principles that have evolved over the past twenty

years. The Green Roads approach is a road building technologythat is appropriate for Nepal's fragile mountain topography, that

aims to be low cost, and uses manual labour to generate off-farm

employment. "Green Roads could do so much throughout Nepal to

improve the standard of living of local people, and not damage the

environment," says Shankar Chaudari, a consultant Senior

Overseer. "A Green Road costs only Rs 10-12 lakh / km to build,

and the benefits go straight to the local people."

The Green Road concept aims to:

o Develop rural road and trail networks that reduce

transportation costs.

Use a participatory approach with local authorities and

stakeholder communities from the preparation phase onwards, to

promote a sense of local road ownership.

Concrete Roads:

Concrete roads have a life of 40 years or more, compared to

10 years for bituminious ones. In addition, concrete roads

require almost no maintenance, whereas bituminious ones

need frequent repairs due to damage by traffic, weather,

etc.

Concretising of existing roads in Mumbai, Nagpur, Calcutta

and other cities has shown that this leads to significant

gains in traffic speeds, making in turn for a notable


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reduction in congestion and jams on high traffic density

roads.

Concrete roads are neither damaged by rain ,nor softened

and distorted by heat

For the same traffic load conditions, concrete pavements

are thinner than bituminious ones

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Amit Pawar (Proj. Scprt)