The New Indian Express 21.08.2012
Roads to be repaired with cold milling tech
GHMC engineer-in-chief R Dhan Singh said, “We have decided to go in for
milling process because of the increasing height of the roads on curbs.
Given the number of bumpy and damaged roads in the twin cities, one
wonders how many times do the authorities have to relay or recarpet the
same.
There are the obvious questions of quality as well.
Besides,
it might sound odd, but the fact is due to frequent relaying of roads,
their height has been increasing in several localities much to the
chagrin of the residents.It results in water-logging in houses due to overflowing drains or during rains.
Taking
these factors into consideration, the Greater Hyderabad Municipal
Corporation (GHMC) has decided to adopt what is called, the Milling
Technology, which is cost-effective, suitable and ecofriendly.
Speaking
to City Express, GHMC engineer-in-chief R Dhan Singh said, “We have
decided to go in for milling process because of the increasing height of
the roads on curbs. Drainage is becoming a problem and the ground-level of houses and shops is coming down.
The
GHMC has laid certain roads in Nampally, Abids and a few other places
on an experimental basis and it has yielded encouraging results.
”
The civic body proposes to recarpet 15-20 stretches using the milling
process by October 1 when the Conference of Parties to the Convention on
Biological Diversity begins.
Works of the same are expected to begin next week at GPO Abids-MJ Market (`49.90 lakh), Maithrivanam road (`49.95 lakh), Ameerpet Junction-Kanaka Durga Devi Temple (`23.10 lakh), Kanaka Durga Devi Temple to Meena Jewellers (`49.90 lakh), Khairatabad Junction to Rajiv Gandhi Statue, Somajiguda (`38 lakh) and Secretariat to Indira Gandhi statue (`32 lakh).
The works will also be taken up in Jubilee Hills, Liberty junction, Golconda Fort and Banjara Hills.
The
milling machines are designed to remove the carriageway pavement at
precisely the specified depth, asphalt as well as concrete with a
milling drum.
The milled material is lifted and conveyed into a tipper through an integrated discharge conveyor system.
The
reclaimed asphalt pavement (RAP) to a large extent can be reused and
recycled for producing new asphalt depending on its actual condition.
The
milled material is also suitable for reuse in trench construction,
owing to its excellent compaction properties and good bearing capacity. Cold
milling machines are capable of working on narrowly peggedout
construction sites, with traffic flowing uninterrupted on the adjacent
lane.
Cold milling machines give the road surface the desired
properties in one single pass, in which typically just a few millimetres
of the pavement are removed. The road can be reopened to traffic immediately afterwards.