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THE FORMWORK NOE board ® Dated: 12.2011 Technical Information Technical Information NOEboard NOEboard – innovative construction 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 Thermoplastic facing, Fibreglass loadbearing layer, 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 surface. 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 well: 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 Transverse 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 2 example, their bending deflec- 2.43 m . Thus a lower weight per 2 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 2 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 formwork. 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 2 kg/m . And against other fully synthetic formwork facings, NOEboard is between 0.8 and 2.3 2 kg/m lighter. 4 Dated: 12.2011 TI NOEboard Subject to technical modifications. Technical Information NOEboard NOEboard – nailed or screwed 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 clean 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 Repair: The frequency of repair is re- duced and the repair itself is simple. 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 differences. NOEboard – sustainable 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 surface 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: components. 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 – points 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 site 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 NOE-Schaltechnik Georg Meyer-Keller GmbH + Co. KG Kuntzestr. 72, 73079 Suessen, Germany Tel. +49 7162 13-1 Fax +49 7162 13-288 firstname.lastname@example.org www.noe.de www.noeplast.com Austria Croatia Poland NOE-Schaltechnik NOE oplatna tehnika d.o.o. NOE-PL Sp. Zo.o. ww.noe-schaltechnik.at www.noe.hr www.noe.com.pl email@example.com firstname.lastname@example.org email@example.com Belgium Czech Republic Russia NOE-Bekistingtechniek n.v. ISD-NOE NOE St. Petersburg www.noe.be www.isd-noe.cz firstname.lastname@example.org email@example.com firstname.lastname@example.org Serbia Brasil France NOE Sistemske Oplate d.o.o. Mills do Brasil NOE-France www.noe-scg.com Estruturas e Serviços Ltda www.noefrance.fr email@example.com www.mills.com.br firstname.lastname@example.org email@example.com Switzerland Netherlands NOE-Schaltechnik Bulgaria NOE-Bekistingtechniek b.v. www.noe.ch NOE-Schaltechnik www.noe.nl firstname.lastname@example.org www.noebg.com email@example.com firstname.lastname@example.org NS/e 5337400 12.11 2000 RR Subject to technical modifications.
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