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construction chemicals

MegaFlex Maxi Cement

MegaFlex Maxi Cement Based, High Performance, Highly Elastic, Large Size Ceramic Adhesive Mortar PRODUCT DESCRIPTION Cement based, elastic adhesive with reduced slippage, high adherence and elongated workable time for large size coating applications such as ceramic, granite ceramic, marble, natural rock and porcelain, which is resistant to temperature changes, water and frost. AREAS OF USE MegaFlex Maxi is used for the adhesion on such sound, dust free vertical and horizontal cement based plaster, trowel coating and prime coated concrete surfaces as well as prime coated ceramic tile coated surfaces with low water absorbance of such coating materials with low water absorbance as ceramic tiles in indoors and outdoors spaces. The product is used in such indoors and outdoors spaces that are exposed to busy traffic as hospitals, schools, stores and grocery stores, on such floors with floor heating, where extremely high temperature changes occur, and on the floors and walls of metro, terminal and coach stations which are characterized by vibration. The product is also used for the adhesion of coating materials on waterproofed surfaces and ceramic on ceramic application surfaces, to which MegaFilm Visko primer has been applied. PRODUCT ADVANTAGES • Lower consumption relatively to regular adhesives. • Ideal for the adhesion of large size coating materials. • Displays high performance in applications with all coating materials and on all types of surfaces. • Poses high elasticity and bonding strength thanks to the polymer additive. • Water and frost resistant. • Poses a longer workable time thanks to the elongated retention time thereof. • Prepared and applied easily. • Does not cause slippage in the case of vertical applications. PERFORMANCE Initial tensile adhesion strength ≥ 1 N/mm 2 TS EN 1348 Tensile adhesion strength after water immersion ≥ 1 N/mm 2 TS EN 1348 Tensile adhesion strength after thermal aging ≥ 1 N/mm 2 TS EN 1348 Tensile adhesion strength after freezing - thawing cycle ≥ 1 N/mm 2 TS EN 1348 Tensile adhesion strength after retention time (after 30 minutes) ≥ 0.5 N/mm 2 TS EN 1346 Transverse deformation S2 ≥ 5 mm TS EN 12002 Slippage ≤ 0.5 mm TS EN 1308 Reaction to fire A1 TS EN 13501 - 1 The foregoing values represent the results of the laboratory tests conducted at 23 ± 2°C temperature and 50% ± 5 relative humidity conditions. The values provided as per the table may vary depending on the surface and ambient conditions. REFERENCE STANDARDS Certifications/ Standards TS EN 12004/C2TES2 • In the case of ceramic tile coating application on old ceramic tile coating, the surface should, prior to the application, be prepared by applying MegaFilm Visko and to dry for minimum 3 hours. • In the case of wet space applications, waterproofing should be ensured with Megaİzo Lastik 10 on the surface, which should have been coated with the recommended primer, prior to ceramic flooring. Application Methods • MegaFlex Maxi should be applied to the surface with the notched trowel determined with respect to the size of the ceramic tile and the structural condition of the surface. • Due care must be taken to ensure that MegaFlex Maxi does not form a film layer on the surface during the application. In the cases of formation of film layer on the surface, the adhesive should be scraped off the surface and should never be used again. • The coating material should be placed on the surface and be ensured to settle thereon with a rubber tip hammer. • Joint filling should be initiated minimum 24 hours after the adhesion. • Minimum 3 mm joint gaps should be allowed amongst large size coating materials. • In the case of the applications with ceramic tiles with dimensions in excess of 33x33 cm in indoors and outdoors spaces; double side adhesion should be applied. • In the case of exterior and vertical surface applications, the product enables coating materials up to 45x45 cm in size to be safely adhered at such heights up to 10 meters. • Minimum 10 mm long expansion joint gap should be allowed for each 30 m 2 surface area, which gaps should be filled with Megaİzo PU Mastik HM. Application Recommendations • The wall and floor ceramic tiles in light colors are recommended to be adhered with MegaFlex Maxi in white color. • The product should, once mixed, be used before the expiration of its pot life. Any mortar, the pot life of which has expired, should not be used during the application. • Any such foreign substance as lime, cement or plaster should not be added to the mortar prepared. • Any extra water should not be added to the mixture. • The product should not be applied on unsound surfaces. The soundness and the load bearing capacity of old surfaces should be checked prior to adhesion. • The surface should be preserved from air currents and water contact during and after the application. • The product should not be applied to such surfaces, which are exposed to risk of freezing within the next 24 hours, which are frozen or the frost of which is thawing. • Due care should be taken to ensure that the material is not exposed to direct sunlight in hot weather conditions, and the product should be mixed with cold water. • The product should not be applied on extremely windy weather conditions or on hot surfaces, which are exposed to direct sunlight; and in the cases, where application is imperative under such conditions, the environment and the surface should be prepared for application in advance. • The product should not be applied in rainy weather conditions, and the application surface should be preserved from rain for a period of 24 hours. • Refer to our technical support hotline for recommendation on different surface applications. (PHONE: 444 4 595) Ministry of Public Works and Settlement Item No. Ministry of Public Works and Settlement Item No.: 04.013/1 Ministry of Public Works and Settlement Item No.: 04.013/4 QUALITY CERTIFICATES TSE CE APPLICATION PROCEDURE Application Surfaces Indoors and Outdoors Walls; - Cement based plaster (MegaFilm primer applied) - Concrete (MegaFilm or MegaFilm BB primer applied) - Old ceramic tile coating (MegaFilm Visko primer applied) Indoors and Outdoors Floors; - Cement based trowel coating (MegaFilm primer applied) - Concrete (MegaFilm or MegaFilm BB primer applied) - Old ceramic tile coating (MegaFilm Visko primer applied) Surface Preparation • The application surface should be dry, clean, sound and dust free, and should have been cleansed of oil, dirt or any materials that may prevent adhesion, and any such materials as mortar and cement residues should be scraped from the application surface. • The dusty surface on the reverse side of the ceramic tile should be moisturized and cleaned. • The surface defects, which are deeper than 1 cm, should be repaired with MegaTamir İ or MegaTamir K 24 hours in advance of the adhesive mortar application. In the cases, where structural repair mortar should be used; MegaTamir İ Yapısal or MegaTamir K Yapısal should be preferred. • Upon the completion of the surface cleaning, MegaFilm primer should be applied in a single coat with a brush and be left to dry for 1 to 2 hours in order to enhance the bonding strength and stabilize the surface absorption. • Exposed concrete surfaces should be applied MegaFilm BB exposed concrete primer in single coat and be left to dry for minimum 3 hours prior to the application of the adhesive mortar in order to enhance the adhesion strength. Surface and Ambient Temperature The surface and ambient temperature should be between +5°C and +35°C whilst at application. Application Limits Useful time for prepared mortar - Pot life Workable time Smoothing time Required standby time for joint application Opening the traffic The foregoing values represent the results of the laboratory tests conducted at 23 ± 2°C temperature and 50% ± 5 relative humidity conditions. The values provided as per the table may vary depending on the surface and ambient conditions. APPLICATION INSTRUCTIONS Mixing Ratio The product should be mixed with water, weighing equal to 26 - 30 % of the product. (4.0 - 4.5 liters of water for a 15 kg package) Mixing Equipment • Low speed electrical mixer (400 cycles/min.) • Special tip stirring equipment Maximum 4 hours Maximum 50 minutes 30 minutes 24 hours 24 - 48 hours Mixing Period The product should be stirred with a low speed mixer until any dry dust and globs are eliminated. The mortar should, then, be stirred once again for 1 to 2 minutes after being had settled for 5 to 10 minutes following preparation. Application Equipment • Steel notched trowel determined with respect to the size of ceramic tile and the structure of the surface • Rubber tip ceramic hammer 17

Equipment Cleaning The equipment used should be cleaned with water following the application before the mortar dries. TECHNICAL PROPERTIES Chemical Structure: Cement based ceramic tile adhesive mortar with polymer additive Dry Density: 1.35 ± 0.05 gr/cm 3 Mortar Density: 1.74 ± 0.05 gr/cm 3 Grain Size: ≤ 600 µm Color: Gray, white Temperature Resistance: -15°C to +80°C CONSUMPTION The consumption amount varies depending on the condition of the application surface and the coating material. Ceramic Tile Size Notch Size Consumption 10x10 cm to 10x15 cm or smaller 6x6x6 Single side adhesion: 3.5 - 4.0 kg/m 2 Double side adhesion: 4.5 - 5.0 kg/m 2 10x15 to 25x40 cm 10x15 to 33x33 cm 25x40 to 33x33 cm or larger 8x8x8 10x10x10 Single side adhesion: 4.0 - 4.5 kg/m 2 Double side adhesion: 5.0 - 5.5 kg/m 2 Single side adhesion: 5.0 - 5.5 kg/m 2 Double side adhesion: 6.0 - 6.5 kg/m 2 PACKAGING MegaFlex Maxi is delivered in net 15 kg kraft bags, which are stowed in 60 pcs. on a 80 cm x 100 cm palette (900 kg). SHELF LIFE The shelf life of the product is 12 months when stored within non tampered original packaging in dry (maximum relative humidity 60 %) and cool (ambient temperature between +5°C and +25°C) environment. STORAGE CONDITIONS The product should be stored within non tampered original packaging in dry (maximum relative humidity 60 %) and cool (ambient temperature between +5°C and +25°C) environment. It should not be exposed to direct sunlight. The container of the product should be closed firmly when not used. SAFETY PRECAUTIONS Please refer to the Safety Data Sheet (SDS) as appropriate for easy and safe application. 18

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