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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
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GEOTUBdia 25 – 100 cmSq. 20 to 60 cm
GEOPANEL GEOSKY & SKYRAIL
plastic formworkwhy plastic formwork?
why plastic formwork?
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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;
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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
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- 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”
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- 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.
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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
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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
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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
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dia 900 mm
why plastic?GEOTUB PANEL Square and rectangular
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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.
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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
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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
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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
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thank you for your attention!
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