What is not possible yesterday is possible today
By
Dr.V.V.Deshmukh
We have laid concrete overlay 150mm thick on 150mm
thick GSB with the help of Thane unit of
Prime Minister Gram Sadak Yogana at Murbad
The road is in good condition since two years
The road has been accepted widely across the PMGSY
official but it could not progress further because of the high initial cost ,
though it has many advantages and life cycle study has proved it’s economical
It has made us work further on optimisation of mix
design. we found that if we reduce the cost of admixture we will be
able to reduce the concrete cost
We approach BASF construction chemical company and they have
promised us to give the admixture at half the rate.
The surprise:
ONE TIME IMPOSSIBLE IS POSSIBLE TODAY
CONCRETE ROAD AT THE SAME COST OF BITUMINOUS ROAD
|
Cement
|
260
|
5.5
|
1430
|
|||
|
Flyash
|
200
|
2
|
400
|
|||
|
Crushsand
|
850
|
0.8
|
680
|
|||
|
Metalii
|
500
|
0.6
|
300
|
|||
|
metal i
|
450
|
0.6
|
270
|
|||
|
Admix
|
0.075
|
70
|
5.25
|
|||
|
Watwr
|
160
|
0.4
|
64
|
|||
|
|
|
|
|
|||
|
2420.075
|
3149.25
|
|||||
|
RMC+TAXES+PROFIT
|
1400
|
|||||
|
cost of M-35 CONCRETE
|
4549.25
|
|||||
|
Less
|
400
|
|||||
|
4149.25
|
||||||
|
COST OF 1KM ROAD WITH DIFFERENT
THICKNESS
|
||||||
|
length
|
Breadth
|
thickness
|
|
|
||
|
1000
|
3.75
|
0.15
|
562.5
|
2558953
|
||
|
|
|
0.1
|
375
|
1705969
|
||
|
|
|
0.075
|
281.25
|
1279477
|
||
|
BITUMINOUS ROAD
|
|
|
||||
|
BM
|
50MM
|
3800
|
||||
|
AC
|
20MM
|
4800
|
||||
|
|
DENSITY KG/M3
|
2400
|
|
|
||
|
|
|
|
|
|
|
|
|
1000
|
3.75
|
0.05
|
187.5
|
450000
|
450
|
1710000
|
|
1000
|
3.75
|
0.02
|
75
|
180000
|
180
|
864000
|
|
|
|
|
|
|
|
|
|
|
COST OF 1 KILOMETER OF BM ROAD
|
|
|
|
|
2574000
|
|
cost per kilometer of concrete road
|
||||||
|
Thickness
|
mm
|
rs
|
||||
|
150
|
2558953
|
|||||
|
100
|
1705969
|
|||||
|
75
|
1279477
|
|||||
For every 10kg cement replaced by microfine flyash, there is saving of rs 25 per meter cube
concrete 
