NOE board NOE Schaltechnik by ihuangpingba


									                        THE FORMWORK

NOE board

                                 Dated: 12.2011

Technical Information
Technical Information NOEboard

NOEboard –
NOEboard is a high-tech
formwork facing consisting of a
thermoplastic facing, a fibreglass
loadbearing layer and a PU-foam
core. This material combination
gives NOEboard a number of out-
standing properties. One of the
most important is minimal water
absorption, which prevents swell-
ing and means the dreaded rip-
pling effect is now a thing of the
past. In addition, the innovative
NOEboard sandwich construction
combines low weight with good
loadbearing capacity and ease of
processing and handling.

                                     Figure 1: Construction of NOEboard formwork facing
                                     Œ Thermoplastic facing,  Fibreglass loadbearing layer, Ž PU foam

           NOEboard –
           no swelling

Water has no effect on NOEboard
formwork facing.
Conventional formwork facings
usually consist of plywood. Ply-
wood absorbs moisture and
swells. This causes dimensional
change. A 10% increase in mois-
ture content brings with it expan-
sions of 0.15% longitudinally (4
mm for l = 2650 mm) and 4% in
thickness (0.8 mm for d = 21 mm)
A further unpleasant accompani-
ment of swelling is rippling. This
happens when the wood swells
up at unprotected spots, for
example where damage has
occurred to the surface coating
or the board edges have been
left unvarnished. Bulges protrude
parallel to fibres and leave ugly    Figure 2: Rippling in plywood formwork facing
marks in the concrete.

2 Dated: 12.2011                               TI NOEboard              Subject to technical modifications.
Technical Information NOEboard

There is no danger of this with
NOEboard because it does not
absorb water.
Plywood facings are usually
coated with phenolic resin. This
coating becomes worn to various
degrees after time. As a result,
the plywood facing has varying
suction properties. The conse-
quence is that new plywood
formwork facing creates a differ-
ent surface colouration to that of
used facing. In contrast, the con-
crete colouration does not
change when NOEboard is used,
because the suction of the
formwork facing remains consis-
tently low.
NOEboard does not swell, which
allows the board to be an extra
1 mm thick, thus increasing the
stiffness of the formwork panels.
Further plus points include a less
noticeable impression of the
                                      Figure 3: Rippling impressions in concrete
formwork frame in the concrete
and an improved concrete

Figure 4: NOEboard formwork
facing absorbs no moisture and
therefore does not swell

Figure 5: With increasing age and
damage, plywood formwork fac-
ing absorbs moisture and swells

Subject to technical modifications.             TI NOEboard                        Dated: 12.2011 3
Technical Information NOEboard

           NOEboard –                 Facing         Approx.       Bending       Shear        Bending
           low weight                 thickness      weight        modulus       modulus      stress
                                      mm             ca. kg        N/mm²         N/mm²        N/mm²

                                           10           07,40          4400        137,90          83
NOEboard weighs less than ply-
wood formwork facing.                      10           07,40          3800        137,90          74
This is an important factor in
how well formwork handles on               13           08,22          6100        111,50          80
site is its weight. With its very
                                           13           08,22          4400        111,50          47
favourable weight characteristics,
NOEboard excels on this point as           16           09,50          5400        087,50          78
A typical 21-mm-thick plywood              16           09,50          3900        087,50          45
formwork facing weighs 14.7 kg
                                           22           12,80          5300        057,20          82
per square metre. In comparison,
the 1-mm-thicker NOEboard (22              22           12,80          3300        057,20          47
mm) is almost two kilos lighter
per square metre (12.8 kg/m²)!
The maximum board format is                                       Longitudinal
1500 x 4000 mm for thicknesses
between 10 and 22 mm. As a
rule, board thicknesses are cho-
sen to be 1 mm thicker than ply-     Table 1: Technical data NOEboard
wood panels, because NOEboard
does not swell.
The structural stiffness of tradi-
tional plywood panels depends        The following example makes
on their moisture content. In        clear the difference in weight:
other words, the higher the mois-
ture content of the plywood pan-     A formwork element 2.70 m high
els, the lower their strength. For   and 0.90 m wide has an area of
example, their bending deflec-       2.43 m . Thus a lower weight per
tion increases by 20% when their     unit area of 1 kg/m of formwork
moisture content rises by 12%.       facing approximates to an ele-
NOEboard, on the other hand,         ment weight reduction of 2.4 kg,
absorbs no water and therefore       while a higher weight per unit
water cannot affect its strength!    area of 2.1 kg/m leads to a
                                     formwork element weighing 5 kg
Despite its higher loadbearing ca-   more.
pacity, NOEboard is lighter than
many other formwork facings.
The importance of this should not
be underestimated when it comes
to handling manually erected
The weight advantage gained
from NOEboard varies, depend-
ing on the material type and fac-
ing thickness.
Compared with traditional birch
plywood formwork facing, the
advantage can be up to 1.9
kg/m . And against other fully
synthetic formwork facings,
NOEboard is between 0.8 and 2.3
kg/m lighter.

4 Dated: 12.2011                                  TI NOEboard            Subject to technical modifications.
Technical Information NOEboard

           NOEboard –
           nailed or
Just like plywood panels,
NOEboard can be nailed or
screwed in place.
As the holding force on fixings is
somewhat below that of wood,
we recommend the use of ap-
proximately 30% more nails or
screws with NOEboard.

                                      Figure 6: NOEboard can be nailed or screwed. The advantages:
                                      It does not splinter and absorbs no water

                                      Figure 7: Plywood facing splinters on the back. Water entering
                                      through the nail hole causes the facing to swell.

Subject to technical modifications.             TI NOEboard                               Dated: 12.2011 5
Technical Information NOEboard

          NOEboard –
          simple to
NOEboard can be cleaned in sev-
eral ways.
Cleaning the NOEboard surface is
extremely simple and can be
done on site in the same way as
for plywood panels. Cleaning
with water is an excellent option
in the factory or building yard.
There are two methods:
1. High-pressure cleaning
   A high-pressure cleaner with
   a fan jet nozzle or a
   high-pressure surface cleaner
   with flat nozzles is suitable.
                                    Figure 8: Cleaning with a high-pressure cleaner fitted with
   Max. pressure 500 bar.           a fan nozzle
2. Surface cleaning
   A rotation cleaner with
   cleaning pad and water is a
   suitable method.

                                    Figure 10: Cleaning with a high-pressure surface cleaner fitted with a
                                    fan nozzle

Figure 9: Rotation cleaner with
cleaning pad

6 Dated: 12.2011                              TI NOEboard               Subject to technical modifications.
Technical Information NOEboard

           NOEboard –
           easy to use

The frequency of repair is re-
duced and the repair itself is
NOEboard offers another advan-
tage over conventional plywood
formwork facing: Drilled holes
and screw holes do not have to
be repaired. Smaller holes close
themselves during the next con-
creting operation, while project-
ing defects can be repaired sim-
ply using a hotmelt process. A
suitable repair kit is available
from NOE.
Note: NOEboard is made from
polyurethane (PU) and can be re-
paired by gluing.
Release agent:                        Figure 11: By using NOEboard, the silicone joint can be smaller
                                      than it would be with plywood formwork facings
Any release agent on the market
can be used for NOEboard, so far
all have been found to be com-
patible. However, we recommend
that you carry out a test first. In   Installation:                          Large formwork elements:
addition, the release agent film
                                      NOEboard has a host of charac-         Large formwork elements with
should be applied evenly and
                                      teristics that make its handling       widths greater than 1500 mm can
thinly over the formwork facing,
                                      considerably simpler. It does not      be fabricated using tongue and
exactly as with plywood.
                                      swell and has a coefficient of         groove joints, which allows com-
                                      thermal expansion similar to that      pliance with very tight flatness
                                      of steel. Therefore the silicone       tolerances.
                                      joints can be thinner than is possi-
                                      ble with plywood.
                                      In contrast to other synthetic
                                      formwork facings, NOEboard pro-
                                      vides a good bonding substrate
                                      for silicone. This means the joints
                                      between frame and panel can be
                                      filled or sealed with silicone.

Subject to technical modifications.              TI NOEboard                                Dated: 12.2011 7
Technical Information NOEboard

           NOEboard –                             NOEboard – has a particularly
           resistant to                           scratch-resistant surface
           heat and cold
NOEboard formwork facing can           Resistance:                            face changes due to swelling. No
be used in a temperature range         Resistant to mechanical                rippling either.
of –20 °C to + 80 °C.                  effects
                                                                              In contrast, moisture penetrating
Within this range, NOEboard can        NOEboard is very resistant to nor-     plywood formwork facings or
be used without limitations. Even      mal mechanical effects encoun-         synthetic composite boards with
at –20 °C, NOEboard can be             tered on site and has a particu-       timber cores can cause them to
nailed or screwed without tem-         larly scratch-resistant surface. The   swell and can give rise, in some
perature-related embrittlement.        innovative facing skin has no ten-     circumstances, to rippling.
                                       dency to splinter.
The coefficient of thermal expan-
sion of the formwork facing is ex-     With NOEboard, sites of minor
tremely small at 11 µStrain/K. The     damage, such as nail holes, close
change in length is comparable         themselves during the next con-
with that of steel, which results in   crete pour. There is no risk of sur-
no gaps forming in the steel
frame as a result of temperature

           NOEboard –

The best way to recycle                Figure 12: Nail or screw holes close themselves during the next
NOEboard formwork facing is to         concrete pour
use its energy content.
NOEboard can be simply disposed
of by incineration with ordinary
refuse at temperatures of over
800 °C. The waste gases gener-
ated by this process are harmless
to health.
European Waste Code EWC
170203 applies to the panels.

           NOEboard –
           UV resistant

The resistance of the surface to
ageing caused by UV radiation
has been proved in tests.

                                       Figure 13: Poker vibrator damage to a NOEboard formwork facing

8 Dated: 12.2011                                  TI NOEboard                 Subject to technical modifications.
Technical Information NOEboard

“Burns” caused by internal poker       loadbearing capacity (bending          that act on the formwork facing
vibrators to plywood formwork          stresses in the direction of span).    when concrete is poured and
facings normally lead to the top                                              compacted. The second objective
                                       Thermal expansion:
veneer being damaged beyond                                                   was to investigate other mechani-
repair. The contractor usually opts    The low coefficient of thermal ex-     cal effects that occur on a con-
to replace the facing or under-        pansion of NOEboard, differing         struction site. This includes con-
take a major repair.                   by less than 10% from that of          tact with reinforcement and
                                       steel, minimises temperature-re-       poker vibrators, which can come
With NOEboard, although the
                                       lated stresses and the gaps be-        into direct contact with formwork
poker roughens the surface, the
                                       tween the facing and steel             facings, and the effect of stacking
formwork facing can continue to
                                       frames, providing that a silicone      formwork elements on top of
be used. The facing skin can be
                                       joint filler is not used.              one another. In addition, a fur-
made smooth again using a K 60
                                                                              ther in-house test determined the
or K 80 sanding pad.                   Durability:
                                                                              effect of a water jet from a
Compressive strength:                  NOEboard is one of the newer           high-pressure cleaner striking the
                                       products in the NOE-Schaltechnik       facing.
NOEboard has a high compressive
                                       range and has been in use on
strength. This has been proved by                                             The results of this series of tests
                                       sites since 2008. Several years of
NOE in countless tests to deter-                                              showed that NOEboard is very
                                       experience has shown that the
mine the impression depth under                                               suitable for resisting the loads
                                       durability of this fully synthetic
practical conditions.                                                         from concreting and from other
                                       facing is considerably greater
                                                                              site operations. This leads to us to
Chemical resistance:                   than conventional plywood
                                                                              expect a correspondingly long
                                       formwork facings.
The surface has a very good resis-                                            service life and confirms the find-
tance to aqueous media including       NOE developed and carried out          ings of years of practical experi-
dilute acids/alkalis and washing li-   load tests to investigate the          ence.
quors. It also has good resistance     long-term performance of the
to oils/grease, alcohols and           formwork facing. As part of these
aliphatic hydrocarbons. Discolour-     tests, NOEboard was placed in a
ation of the concrete surface due      drum along with other facings
to the formwork facing skin does       under identical conditions and
not occur with NOEboard.               subjected to the effects of falling
                                       and abrading concrete and steel
Loadbearing capacity:
Despite its light weight,
                                       The first objective of these practi-
NOEboard excels in its
                                       cal tests was to simulate the loads

Figure 14: Damage to the surface of plywood facing caused by a                Figures 15 and 16: Test apparatus
poker vibrator                                                                to determine wear

Subject to technical modifications.               TI NOEboard                                  Dated: 12.2011 9
Technical Information NOEboard

NOEboard – three important                     How do                               NOEboard –
                                               you repair                           simple to
n NOEboard excels in particular                NOEboard?                            repair
  because of its good
  loadbearing capacity (bending      NOEboard has the advantage          1. Mill out the repair site to a
  in the direction of span) com-     that considerably fewer repairs        depth of 3 mm using a router.
  bined with low weight.             have to be carried out compared
                                     with plywood formwork facings.
n Because the fully synthetic        The reason for this is that
  board does not shrink or swell     NOEboard does not absorb water
  and its coefficient of thermal     and therefore does not swell. For
  expansion differs by less than     this reason, nail holes do not
  10% from that of steel, stresses   have to be repaired. They close
  and gaps between the               themselves during the next con-
  formwork facing and frame are      crete pour Only major damage
  minimised.                         needs to be repaired. The
n Many years of practical experi-    hotmelt method of repair is very
  ence has shown that NOEboard       simple and is used in the same
  is very compatible with the        way as for plywood formwork
  loads encountered on site. Fur-    facings.
                                                                         2. Fill the repair site with
  ther in-house tests indicate it                                           NOEboard repair filler (Part
  has a correspondingly long                                                No. 844070). To reduce the
  service life.                                                             cooling time, we recommend
                                                                            that the repair site is cooled
                                                                            with a NOEboard cooling
                                                                            block (Part No. 397010).

                                                                         3. Allow to cure for one minute.
                                                                            Then smooth the repair site
                                                                            using a NOEboard trimming
                                                                            cutter (Part No. 397000).

10 Dated: 12.2011                              TI NOEboard               Subject to technical modifications.
Technical Information NOEboard

                                                    Figure 17: Milling out the repair

                                                    Figures 18 and 19: Filling the
                                                    repair site with NOEboard repair
                                                    filler and removing the heat with
                                                    NOEboard cooling blocks.

                                                    Figures 20 and 21: Smoothing the
                                                    repair site with a NOEboard trim-
                                                    ming cutter

Subject to technical modifications.   TI NOEboard                  Dated: 12.2011 11
                                                              THE FORMWORK

Georg Meyer-Keller GmbH + Co. KG
Kuntzestr. 72, 73079 Suessen, Germany
Tel. +49 7162 13-1
Fax +49 7162 13-288

Austria                          Croatia                          Poland
NOE-Schaltechnik                 NOE oplatna tehnika d.o.o.       NOE-PL Sp. Zo.o.                           

Belgium                          Czech Republic                   Russia
NOE-Bekistingtechniek n.v.       ISD-NOE                          NOE St. Petersburg                                  
Brasil                           France                           NOE Sistemske Oplate d.o.o.
Mills do Brasil                  NOE-France             
Estruturas e Serviços Ltda                 noe-scg@eunet.yu                                                      Switzerland
                                 Netherlands                      NOE-Schaltechnik
Bulgaria                         NOE-Bekistingtechniek b.v.

                                                                  NS/e 5337400 12.11 2000 RR
                                                                  Subject to technical modifications.

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