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.
