Mr
Sanjay Mukherjee / Mr Sanjay Deshmukh / Ms Pallavi Darade
Bombay
Municipal Corporation
-----------------------------------------------------------------------------------------------------------------------------------
Dear Sirs / Madam :
Over the past 2 months , there have been lots of reports in
news papers re the unsolved problem of effective filling up of pot holes on roads of Mumbai
A report appearing in Times of India ( 02 Aug ) tells about
Municipal Corporation trying out some pot hole filling material imported from Austria
My following blog / suggestion is based on my interactions /
negotiations with a French Company COLAS , way back in 1987-88 , for a Technical Collaboration with L&T , ( where I was , at that time ,
General Manager - Planning & Development )
After lapse of 28 years , I have no idea if COLAS still continue
to supply Plants ( very simple that can be manufactured by a decent workshop in
Mumbai ) and the process knowhow showing how to mix 90 % water with 9 %
asphalt in presence of a catalyst
But you may want to send out an inquiry to COLAS , to whom , I
am marking a copy of this mail
May be , they will contact
you on their own !
If I can help in any way , do not hesitate to phone or write
with regards,
(
click to view my profile )
Marol
, Mumbai , India
( M
) +91 - 98,67,55,08,08
---------------------------------------------------------------------------------------------------------------------------------------------
Cold Asphalt is THE
ANSWER
Hindustan
Times ( 19 July ) carries a news report
titled :
"
BMC to test new materials to fix potholes "
Report
goes on to say :
"
The BMC has identified five private companies , each of which will need to fill
50 sq meters of potholes on various roads. They will be using their own
technology on trial basis .
Sources
said the five firms had given presentations in which a ready mix of
POWDERED BITUMEN stored at normal ROOM
TEMPERATURE
in 25 kg bags, could be DIRECTLY POURED onto the
potholes. Using this mix, potholes can be LEVELED QUICKLY and roads THROWN
OPEN TO TRAFFIC IN 20 MINUTES.... according to these companies , their materials
will work on
a WET SURFACE TOO "
I
am glad that someone in BMC managed to hack into my mail-box and downloaded my following email to Shri
Nitin Gadakari-ji :
----------------------------------------------------------------------------------------------------------------------------
Sunday, 21 February 2016
Shri Nitin Gadkari likes to
experiment and take the accompanying risks
He is not afraid to stick out
his neck for fear of it getting chopped off
He is not paralyzed into
inaction by " fear of failure "
He like to tell his officers
, " Forget the history - what is your problem ? "
Then offers solutions such as
:
* Logistic parks around
big cities to decongest roads and reduce pollution
* RFID sensor embedded
vehicles , paying toll amount electronically without stopping / needing humans
* E-rickshaws to be
treated on par with petrol driven rickshaws
* By passing Bharat V
emission standards to directly jump to Bharat VI standards for all vehicles
* Introducing hybrid
model of financing for attracting private participation in Highway construction
* Use of slag cement in
construction of highways ( use of waste by-products of Steel Industry )
Dear Shri Gadkariji :
Allow me to suggest use of
" COLD ASPHALT
" technology for building new roads / filling pot holes
Use of hot asphalt requires a
very narrow temperature range within which it must be spread on roads before
rolling
Any hotter and it will just
stick to the roller . Any colder and it just won't set
It is difficult to maintain
such narrow range ( of temperature ) after asphalt carrying truck travels
hundreds of kilometers - even when that truck has a heating jacket ( consuming
lots of fuel ! )
If solidified asphalt (
usually stored in steel drums ) is used at the construction site , then it
needs to be heated / melted locally ( usually by creating a wood fire ) -
causing pollution and consuming trees !
And hot asphalt would just
not adhere to a wet surface , rendering it useless for use in monsoon -
especially for repair of pot holes
" COLD ASPHALT " technology
overcomes ALL of these problems !
* It consists of mixing
water ( 90 % ) with hot asphalt ( 9 % ) in presence of a specialty chemical ( 1 %
) , in a
very simple Mixing Machine which can be
transported anywhere on a trolley
* This liquid mixture
can remain stored in steel drums at ROOM
TEMPERATURE for over ONE YEAR !
* Drums
containing liquid can be transported and stored at road construction sites and
COLD ASPHALT mixed
with sand
/ aggregates as and when required . No ripping / destroying of drums and
breaking of solid asphalt
* There
is no need for ANY temperature control as mixture / aggregate can remain at
AMBIENT temperature
* Since
Cold Asphalt is basically water ( 90 % ) , it is ideally suited for filling wet
pot holes or laying on wet roads
* After
laying / spreading , as soon as a heavy roller is driven over Cold Asphalt
mixed aggregate , chemical bond
between water
and asphalt is broken due to heavy pressure and setting process starts ,
causing the layer to
solidify .
Within a matter of MINUTES , regular traffic can flow over the road
! or over the filled pot holes !
* Use of Cold Asphalt
technology results in a HUGE COST SAVING
( remember , it is 90 % water ! )
* Cold Asphalt roads
are much easier to repair , with no pollution , and very little energy
consumption
* Using Cold Asphalt technology, 3 machines ( leveler / spreader / roller ) can lay 1 KM road in a day !
* Using Cold Asphalt technology, 3 machines ( leveler / spreader / roller ) can lay 1 KM road in a day !
I have personally seen NATIONAL HIGHWAYS being constructed with Cold
Asphalt technology in France , way back
in 1988 !
You may turn around and ask :
" With these
advantages , how come our PWD / Municipalities have not adopted this
revolutionary technology ? "
My guess :
Because those responsible for
drawing up tender documents , insist on use of Hot Asphalt !
------------------------------------------------------------------------------------------------------------------------------
20
July 2016
www.hemenparekh.in / blogs
---------------------------------------------------------------------------------------------------------------------------------
A page from www.Colas.com
Production of construction materials
Production of construction materials (15% of total Group revenue)
Upstream from the construction and maintenance activity, Colas
also does significant business in the production and recycling of
construction materials (aggregates, emulsions and binders, asphalt mix, ready-mix
concrete and bitumen) across all its sites around the world. Some of these
materials are used by the Group while others are sold to third parties.
Colas operates via a dense international network consisting
of:
More
than 700 quarries and gravel pits
130 emulsion and binder plants
More
than 550 asphalt plants
Nearly
200 ready-mix concrete plants
1
bitumen production plant in Malaysia
Total volumes produced by Colas in 2015 were as follows:
95
million tons of aggregates
1.8
million tons of emulsions and binders
39
million tons of asphalt mix
2
million cubic meters of ready-mix concrete
1
million tons of bitumen
The Group’s global authorized reserves of
aggregates are estimated at 2.6 billion tons.
--------------------------------------------------------------------------------------------------------------------------------
hemen
parekh
(
click to view my profile )
Marol
, Mumbai , India
( M
) +91 - 98,67,55,08,08
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