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Plastic Formwork
www.nilkamal.com
Nilkamal
WHY PLASTIC?
Geoplastthe GEOPLAST formwork system
Columns:
round, square or
rectangular
Walls:modular wall
panels
Slabs:full and
ribbed slabs
Nilkamal www.nilkamal.com
GEOTUBdia 25 – 100 cmSq. 20 to 60 cm
GEOPANEL GEOSKY & SKYRAIL
plastic formworkwhy plastic formwork?
why plastic formwork?
Nilkamal www.nilkamal.com
formwork?
why plastic?the history: wood formwork
Wood was the material traditionally used to form concrete. It has some disadvantages:
it is slow to erect and dismantle;
not more than 20 or 30 usages;
Nilkamal www.nilkamal.com
not more than 20 or 30 usages;
skilled labour required;
suffers moisture;
job-site waste is high;
environmental issues (deforestation).
why plastic?the history: steel-frame formwork
- Speed of erection and dismantling;
- Lifetime longer than wood;
- The concrete finish superior to wood.
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The biggest issues with steel?
Very heavy and expensive
High maintenance cost
High logistic cost
GeoplastGeoplast chose a special plastic for its formwork system:ABS (Acrylonitrile butadiene styrene):
- resistant and tough, very good shock absorbance
- mechanically stable under loads
Plastic formwork
Nilkamal www.nilkamal.com
- mechanically stable under loads
- very smooth and impervious surface
- temperature tolerant
- recyclable
Geoplastthe GEOPLAST formwork system
Principles common to the Geoplast formwork system:
- Very low weight
- Reusability – 100 pours at least
- Simplicity – “what ain’t there can’t break”
Nilkamal www.nilkamal.com
- Simplicity – “what ain’t there can’t break”
- Few, common accessories –one single pin/handle works for all systems
Geoplastplastic does the job
Horizontal displacement at the centreline of the panel - Eastern Side
instruments no. 6-7-8-9-10
1,30 1,33 1,87300
instrument no. 9
Horizontal displacement at the centerline of the panel - Northern Side
instruments n° 1-2-3-4-5
2,22
0,89
-0,16
0,65
2,88
0,92
1,80
-0,22
1,15
3,54
0,05
0,89
0,95
3,02
1,94
0
50
100
150
200
250
300
-1,00 -0,50 0,00 0,50 1,00 1,50 2,00 2,50 3,00 3,50 4,00
horizontal displacement [mm]
vert
ical p
osit
ion
of
the in
str
um
en
t [c
m]
t=10'
t=15'
t=30'
instrument no.
instrument
instrument no.3
instrument no.4
instrument
Independent testingmeasured that
Geoplast formwork resists
to a concrete pressure of 72 kN/m2.
Nilkamal www.nilkamal.com
1,67
2,12
1,03
2,86 3,65
1,42
2,74
2,03
3,16
1,21
2,45
2,00
0
50
100
150
200
250
-1,00 -0,50 0,00 0,50 1,00 1,50 2,00 2,50 3,00 3,50 4,00
horizontal displacement [mm]
ve
rtic
al
po
sit
ion
of
the
in
str
um
en
ts [
cm
] t=10'
t=15'
t=30'
instrument
instrument
no.10
instrument
instrument
no.7
Spostamenti orizzontali alla distanza L=135cm dall'angolo
strumenti n° 5-6-7
5,62
-1,71
-3,33
-4,11
-2,49
5,21
-3,56
-2,74
2,96
0
50
100
150
200
250
300
-6,00 -4,00 -2,00 0,00 2,00 4,00 6,00
spostamento orizzontale [mm]
qu
ota
vert
icale
str
um
en
to [
cm
]
t=10'
t=25'
t=180'
strumento
strumento
strumento
why plastic?Independent testingTensile strenght
Laboratory testing of the handles measured an
average tensile strenght (rupture) of 1,178.2 kg
Nilkamal www.nilkamal.com
why plastic?Weight: plastic formwork (Geopanel) weighs 18 kg/m2
wood = ca. 18 kg/m2 (±0%)
aluminium = ca. 30 kg/m2 (+67%)
steel frame + plywood = ca. 40 kg/m2 (+220%)
Speed: plastic formwork does not need heavy equipment, so
it is not necessary to wait for cranes, trucks or other
the ADVANTAGES of plastic
Nilkamal www.nilkamal.com
it is not necessary to wait for cranes, trucks or other
machinery.
Cost: - Long lifetime (lower amortisation per pour)
- lower operating cost (no crane time, less labour)
- lower maintenance cost (less cleaning, no or little oiling,
simple storage).
GEOTUB WOOD STEEL
Forming time: 15 to 20 min. 4 h 25 min
Stripping time: 5 min. 30 min. 20 min.
Total time: 25 min. max 4h 30 min. 45 min.
why plastic?Port Laoise, Ireland M7 Motorway extension
120 km of new highway, 45 new bridges, middle of the countryside
GEOTUB job sites
Nilkamal www.nilkamal.com
dia 900 mm
why plastic?GEOTUB PANEL Square and rectangular
Nilkamal www.nilkamal.com
45° integrated chamfer
why plastic?
One man20 minutes total time
GEOTUB PANEL job sites
San Fior, Italyresidential project
Light and handy, the ease of useis extreme.
Nilkamal www.nilkamal.com
Excellent temperature tolerance: -30°C / +70°C
why plastic?GEOTUB job sites - India
Adani port - Mundra
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IVRCL- Bangalore
AHURA - Pune B . G Shirke- Mumbai
why plastic?Technical characteristics:
Panel dimensions:
120 x 60 cm 11 kg weight
smaller compensation panels:
40 x 60 cm 3.68 kg
The characteristics of GEOPANEL
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40 x 60 cm 3.68 kg
30 x 60 cm 2.90 kg
25 x 60 cm 2.30 kg
20 x 60 cm 2.25 kg
walls thickness of 10 to 45 cm - thicker walls are
possible under certain conditions (foundations).
GeoplastGEOPANEL job sites
Gangform with GEOPANEL
3 m high x 12 m long 50 pcs. total36 m2 surface
Total weight 650 kg
Nilkamal www.nilkamal.com
GeoplastGEOPANEL job sites
San José, CostaricaIndustrial building
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GeoplastGEOPANEL job sites - India
MumbaiPratibha - Mumbai
Ahura - Pune
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Mumbai
IVRCL - Mumbai
Pratibha - Mumbai
Ahura - Pune
GeoplastGEOSKY® is a system of plastic formworks for the realization of concrete slabs.
Thanks to the sliding wedge on main beam, this new and innovative system makes
The GEOSKY slab system
Nilkamal www.nilkamal.com
innovative system makes installation and stripping quick, reduces casting time and increases equipment turnaround.
No special panels are needed with GEOSKY® because it uses the same panels (Geopanel) needed to pour walls.
GeoplastThe AVANTAGES of Geosky
Wood and steel slab formwork are the traditional systems.
The are time-proven, but they have some shortcomings:
- main and secondary beams are necessary
- the forming and stripping time is high:
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GEOSKY Wood Steel
0,35-0,40 � 0,9 0,8
h/man/m2 h/man/m2 h/man/m2
(traditional systems)
why plastic?Belgorod, RussiaApartement block.
Quick, easy and safe.No crane, no sweat.
GEOSKY job sites
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Laing – O’RourkeLondon, UK Anemon
Moskow, Russia
DakspolSt. Petersburg,
Russia
Da Vinci MallRome, Italy
M50 HighwayDublin, Ireland
BuygesParis, France
FibrexAbu Dhabi
Cap Cana projectDominican Rep.
Waiwera highwayNew Zealand
Italy
SantiagoChile
NilkamalIndia
Geoplast
Nilkamal www.nilkamal.com
thank you for your attention!