Use of fly ash in the embankment of
Okhla Fly over Bridge, New Delhi, has been completed successfully. In line
with the Mission Project’s objective to promote demonstrated technologies
for large-scale utilization, action has been initiated. The project was
implemented by PWD(Public Works Department),Delhi and CRRI(Central Road
Research Institute).
This has lead to the use of fly ash
in the embankment of Hanumaan
setu, the fly
over near Yamuna Bazar, Delhi. This has been possible with the support
of PWD (public Work Departments), Delhi; CRRI(Central Road Research Institute),NTPC
(National Thermal Power Corporation), and the Ministry of Power.
Construction of road (experimental
basis about 1.00 Km length) using fly ash, at Raichur,Karnataka.This Project
was implemented by PWD(Public Works Department),Raichur and CRRI.(Central
Road Research Institute)
Development of dwelling unit on the
abandoned fly ash pond at the NFL(National Fertilizers Limited), Panipat
and CBRI (Central Building Research Institute)
Use of Roller Compacted concrete technology
using high doses of fly ash for construction of Saddle Dam and upper Dam
of Ghatghar pumped storage Scheme near Nashik, have been implemented in
joint co operation of Maharashtra Irrigation Department,Central Soil and
Mineral Research Station,University of Roorkee.
Recently the ministry of power ,Maharashtra
government has entered with an agreement with a British company for manufacturing
of cement using fly ash ,this would generate revenue from waste (fly ash
is waste from power station),this cement producing facility shall be set
up at Eklehare Thermal power station, Nashik
INTERNATIONAL
FLYASH USE:
Fly ash has been used in
Water Tower Place in Chicago,
the Eisenhower Expressway in Chicago,
Picasso Tower in Madrid, the Commerzbank
Tower in Frankfurt,
Puylaurent dam in France,
the Channel Tunnel between France and
United Kingdom,
the Underground railway tunnel in Vienna,
in the East Bridge in Copenhagen,
and the Eindhoven Airport landing strip
in the Netherlands.
River City is an example where a high
cost material, portland cement, can be replaced at some percentage by a
lowcost material, fly ash. For example, all concrete in River City has
a structural function. The concrete that defines the shapes of the rooms
also provides the building's structural support. Each S-shaped building
is created by a series of vertical concrete tubes (or pods) spaced at intervals
along an S-shaped line made from two semicircles. 22 different types of
apartment shapes are created by the tube's curvilinear layout and from
ways spaces enclosed by the tubes are combined with spaces between tubes.
In Germany, it is an ingredient in
sand-lime bricks. These are produced using boiler slag, fly ash, lime and
water. These bricks are pressed into a brick mold and autoclaved at 190
Celcius.
It is used as an industrial mineral
filler. The hollow spheres in fly ash, cenospheres, are used in plastics,
paints, varnishes and in refractory applications like the U.S. Space Shuttle's
heat shield.
