CARO-FK-flex Technical Data Sheet EN 3217.pdf
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<h1>CARO-FK-flex Technical Data Sheet EN 3217.pdf</h1> <p>SCHOMBURG GmbH & Co. KG <br />Aquafinstrasse 2 – 8 <br />D-32760 Detmold (Germany) <br />phone + 49 -5231- 953-00 <br />fax <br />+ 49 -5231- 953-108 <br />email export@schomburg.de <br />www.schomburg.com</p> <p>Technical Data Sheet</p> <p>CARO-FK-FLEX </p> <p>Art.-No 2 00613</p> <p>Flexibilized tile adhesive</p> <p>SCHOMBURG GmbH & Co. KG <br />Aquafinstrasse 2–8 <br />D-32760 Detmold <br />05 <br />2 00613 <br />EN 12004 <br />CARO-FK-FLEX <br />Cement-based adhesive with increased <br />performance for the installation of tiles <br />in interior and exterior areas <br />C2 <br />Reaction to Fire: <br />Bond strength, as <br />tensile adhesion strength after <br />dry storage: <br />Durability, as <br />tensile adhesion strength after <br />water immersion: <br />tensile adhesion strength after <br />warm storage: <br />tensile adhesion strength after <br />freeze/thaw cycles: </p> <p>Class A1/A1fl <br />≥ 1 N/mm²</p> <p>≥ 1 N/mm² <br />≥ 1 N/mm² <br />≥ 1 N/mm²</p> <p>• Tested to DIN EN 12004, C2 TE. <br />• For interior and exterior use. <br />• Easy application. <br />Areas of application: <br />CARO-FK-FLEX is used as a thin-bed adhesive for the <br />installation of vitrified tiles, ceramic tiles with low water <br />absorption ≤ 0.5 % (porcelain), earthenware tiles, clinker <br />tiles and mosaics. CARO-FK-FLEX is suitable for the <br />assured installation on all substrates in accordance with <br />DIN 18157, part 1, e.g. concrete, aerated concrete, <br />render, plaster, cement-based and calcium sulphate <br />based screeds/heated screeds, masonry work, moisture <br />resistant plasterboard etc. It is additionally suitable as an <br />adhesive for lightweight building boards, e.g. produced <br />from reinforcement covered extruded polystyrene. <br />Furthermore CARO-FK-FLEX is for use when installing <br />tiles on the dispersion based SCHOMBURG bonded <br />waterproof membrane SANIFLEX, in wet duty exposure <br />classes A and A0. For the installation of large format <br />tiles we recommend highly deformable or deformable <br />adhesives e.g. UNIFIX- 2K, UNIFIX 2K/6, MONOFLEX-XL <br />or LIGHTFLEX.</p> <p>Technical Data: <br />Basis: sand/cement, additives <br />(polymer- modified) <br />Colour: <br />cement grey <br />Filler composition: fine graded sand <br />Bulk density: <br />1.4 kg/dm3 <br />Substrate-/ <br />Application temp.: +5 °C to +25 °C <br />Pot life*): <br />approx. 2 hrs <br />Open time*): <br />approx. 30 mins. <br />Grout after*): <br />approx. 24 hrs <br />Traffic after*): <br />approx. 24 hrs <br />Fully loaded after*): approx. 7 day <br />Cleaning: <br />Immediately after use with water. <br />Testing: DIN EN 12004, MPA Dresden, <br />Test certificate 2005-4-1603/1 <br />Reaction to Fire: <br />A1/ A1fl <br />Consumption: min. 1.13 kg/m2/mm <br />layer thickness <br />approx. 2.4 kg/m2 <br />with a 6 mm notched trowel <br />approx. 3.2 kg/m2 <br />with a 8 mm notched trowel <br />approx. 4.0 kg/m2 <br />with a 10 mm notched trowel <br />Packaging: <br />25-kg bag <br />Storage: When stored dry, 12 months in <br />original unopened packaging. Use <br />opened packaging promptly. <br />*) The values relate to +23 °C and 50 % relative humidity; higher <br />temperatures shorten and lower temperatures lengthen the stated times.</p> <p>Surface preparation: <br />The substrate must be dry, load-bearing, sufficiently <br />flat and free from continuous cracks and separating <br />substances such as oil, paint, laitance and loose <br />particles. It must have a largely closed surface with <br />a surface condition and strength appropriate to its <br />type. When laying tiles the substrate preparation and</p> <p>1/3</p> <p>32/17</p> <p>application must follow DIN 18157, part 1. <br />Prime porous substrates with ASO-Unigrund. <br />Calcium sulphate screeds must be abraded, vacuumed <br />and as with all calcium sulphate based substrates, <br />primed with ASO-Unigrund / ASO-Unigrund-S (mix ratio <br />1 : 1 with water). If large format tiles are to be laid on <br />calcium sulphate screeds, we recommend priming with <br />ASODUR-V360W due to its greater barrier function. <br />Heated screeds must be heated up prior to laying <br />finishes in accordance with recognised technological <br />regulations. To determine whether the substrate is <br />ready for tiling carry out a moisture measurement with <br />a carbide hygrometer (CM device). The CM moisture <br />measurements may not exceed <br />• cement screeds ≤ 2.0 % <br />• anhydrite screeds without underfloor heating ≤ 0.5 % <br />• anhydrite screeds with underfloor heating ≤ 0.3 %. <br />The CM measurements are to be carried out in <br />accordance with current working instructions from FBHAD from the technical information “coordination of cut <br />out areas for heated floor construction”. <br />Product preparation: <br />Mix CARO-FK-FLEX with clean water in a clean mixing <br />bucket and with an appropriate mixing device (approx. <br />300 -700 min-1) until a homogenous mass is achieved. <br />Mixing ratio: <br />Approx. 6.75 – 7.5 l water : 25 kg CARO-FK-FLEX <br />After a maturing time of 3 minutes mix through again. <br />Do not mix more adhesive than can be used within the <br />pot life. Spread the mixed adhesive onto the substrate <br />and comb through with a suitable notched trowel <br />dependent on tile format. Lay finishing materials within <br />the adhesive open time (finger test). <br />For installing large format tiles or tiles where there are <br />increased loads or large temperature fluctuations, we <br />recommend modifying CARO-FK-FLEX with UNIFLEX-B. <br />The deformability and the tensile adhesion strength in</p> <p>accordance with DIN EN 12004 are considerably <br />increased. Dependent on the modification, deformability <br />class S2 is achieved, which is especially recommended <br />for tiles larger than 60 × 60 cm. This considerably <br />compensates for shear stresses, which can lead to <br />debonding in unfavourable exterior conditions. To <br />improve product workability, mix UNIFLEX-B with <br />water and then add to the CARO-FK-FLEX and mix until <br />homogenous. <br />Mixing ratio, highly deformable (conforms to <br />class C2 S2, deformation > 5 mm): 4.17 kg UNIFLEX-B: <br />approx. 4.0 l water : 25 kg CARO-FK-FLEX. <br />Important Advice: <br />• When laying tiles in heavy duty exterior areas <br />(balconies and terraces) install in conjunction with the <br />highly elastic waterproofing system AQUAFIN-2K/M <br />and UNIFIX-S3 or UNIFIX-2K. <br />• Prime calcium sulphate based substrates with <br />ASO-Unigrund-GE or ASO-Unigrund-K (mix ratio 1:3 <br />with water). In order to avoid ettringite formation on <br />calcium sulphate based substrates UNIFIX-AEK is <br />suited for adhering onto these substrates, with up to <br />residual moisture content of 1% on heated construction <br />or 1.5 % on unheated construction. <br />• Do not add water to adhesive that has already begun <br />to set in order to restore workability. There is a risk of <br />inadequate strength development. <br />• When installing large format tiles greater than <br />50 x 50 cm, in order to improve the adhesion, a <br />scratch coat should be applied to the rear of the <br />tile or they should be fixed in the buttering-floating <br />method. <br />• When installing natural and synthetic stone tiles pay <br />particular attention to the specific product properties <br />of the material to be fixed (tendency to discolour, <br />risk of curling etc) and follow the manufacturer’s <br />installation recommendations. We recommend that <br />a trial area is carried out.</p> <p>2/3</p> <p>32/17</p> <p>• To avoid curling effects due to water absorption <br />when installing agglomerate/synthetic stone tiles <br />we recommend the use of ASODUR-EK98 or <br />ASODUR-Design. <br />• Direct contact between cement-based adhesives and <br />magnesium-based screeds leads to the destruction <br />of the screed through a chemical reaction, which is <br />known as “magnesium driving”. Negative moisture <br />pressure from the substrate must be prevented with <br />appropriate measures. Mechanically abrade the <br />magnesite substrate and prime with the epoxy <br />ASODUR-V360W plus maximum addition of 5 % <br />water (approx. 250 g/m2). <br />Leave for between 12 and 24 hours at +20 °C, <br />and then apply a second coat of ASODUR-V360W <br />(approx. 300 – 350 g/m2). Broadcast the wet second <br />coat with quartz sand of particle size 0.5 – 1.0 mm to <br />excess. After waiting time for a further 12 – 16 hours <br />carry out the floor finish. <br />• In continually wet areas (swimming pools, containers, <br />etc.) we recommend the use of the thin bed adhesive <br />UNIFIX-2K, UNIFIX-2K/6 system on top of suitable <br />the SCHOMBURG waterproofing compound for the <br />particular installation. <br />• CARO-FK-FLEX is a hydraulically setting adhesive and <br />should be protected from the influences of water and <br />frost until fully cured which may take a few days under <br />unfavourable weather conditions. <br />• Protect areas not to be treated from the effects of <br />CARO-FK-FLEX. <br />• Heed the relevant current regulations. E.g. <br />DIN 18157, DIN 18352, DIN 18560 <br />DIN 18202, EN 13813, DIN 1055 <br />The BEB information sheets, distributed by the <br />Bundesverband Estrich und Belag e.V. <br />The technical information “coordination of cut out <br />points in heated floor constructions”. <br />The ZDB information sheets, distributed by the <br />professional association of the German tile industry:</p> <p>[*1] “Bonded waterproof membranes” <br /> [*2] “Finishes on calcium sulphate screeds” <br /> [*3] “Movement joints in wall and floor tile finishes” <br /> [*5] “Ceramic tiles, natural stone and cementbound composite slabs on cement-based floor <br />constructions with insulation” <br /> [*6] “Ceramic tiles, natural stone and cement-bound <br />composite slabs on heated cement-based floor <br />constructions” <br /> [*7] “Finishes in exterior areas” <br /> [*8] “Finishes on poured asphalt” <br /> [*9] “Tolerances in level” <br /> [*10] “Tolerances” <br /> [*11] “Cleaning, protecting, maintenance” <br /> [*12] “Swimming pool construction” <br />Please observe current valid EU safety data sheet. <br />GISCODE: ZP1</p> <p>* Information about the emission level of volatile compounds in indoor <br />air, which pose a health risk by inhalation, on a scale from class A+ <br />(very low emissions) to C (high emissions).</p> <p>This technical data sheet does not consider local building codes or legal requirements. It shall be used as general reference for the product, based on our current knowledge and experience. <br />Legally binding is only the latest Data Sheet from one of our foreign subsidaries inside their sales territory. In any case of uncertainty please consult our technical department for further <br />information. <br />3/3</p> <p>WKD/CoS/TM</p> <p>32/17</p>
