2-part polymer modified flexible cement mortar for self-levelling floor screeds from 1 to 5 mm

Transcription

1 Product Data Sheet Edition 25/07/2013 Identification no: part polymer modified flexible cement mortar for self-levelling floor screeds from 1 to 5 mm Product Description is a two part, reactive hybrid resin modified, flexible cementitious mortar for self-levelling floor screeds in thin layers of 1 to 5 mm. It comprises a base / liquid and a hardener / powder component which must be mixed just before use and then applied immediately. Uses As a flexible levelling compound for surface renovation and for covering new or worn and cracked concrete, asphalt and steel surfaces, etc. It is intended for use on floors in industry, housing, agriculture, shipping, etc. Its flexible properties combine wearresistance and comfort in thin layers of 1 5 mm. It is a universal product within the HyCem product range *, designed for application on cementitious, bituminous, ceramic or metallic substrates, and which can be used as: Self-levelling screed Adhesive Formation of a vapour barrier Repair material and Protective coating Extended with quartz sand, as a patching and repair mortar: Under Epoxy, Polyurethane and PMMA floor coatings / screeds Suitable for moisture control (Principle 2, method 2.3 of EN ) Suitable for physical resistance (Principle 5, method 5.1 of EN ) Suitable for increasing resistivity (Principle 8, method 8.3 of EN ) * See Notes on Application / Limitations Characteristics / Advantages Excellent adhesion to a variety of surfaces, including freshly laid concrete and ceramic tiles, in addition to worn and cracked concrete, asphalt and steel. Withstands heavy mobile loads from lift trucks even when laid on bituminous surfaces and traditional asphalt Can be applied over damp substrates, even one day old concrete, improving hardening and strength development by restricting evaporation of moisture. Excellent bond to green or hardened concrete whether damp or dry Very good levelling properties Impervious to liquids but permeable to water vapour Frost and de-icing salt resistant For internal or external use Will not corrode reinforcement steel 1 1/1

2 Environmental Information Specific Characteristics Contains no solvents The product is both user and environmentally friendly safe Free from substances that can migrate. Low TVOC emissions, as tested according to AgBB guidelines EMICODE EC 1, Very low emissions Specific Approval/Standards Tested as build-up a) see item System Structure below. Specific Ratings TVOC/TSVOC 28d in µg/m 3 After 3 days 230 TVOC After 28 days 73 TVOC 5 TSVOC USGBC LEED Rating Conforms Section EQ (Indoor Environmental Quality), Credit 4.2 Low-Emitting Materials Paints and Coatings Calculated VOC content 50 g / l Tests Approval / Standards Product Data Form ITT reports for EN Ref. ITT/YP/01-12, dated January 2012 by, Sika, S.A.U, Technology Centre in Spain. All tests are internal tests except where here indicated. Fire rating test report, Ref. PX Rev. 2 dated May 12 th, 2011 by SP Technical Research Institute, Borås, Sweden - Fire rating. VOC emissions testing at Eurofins report Nº G10942 dated February 7, 2012, according to EMICODE requirements 1) Conforms to the requirements of EN 13813: 2002 as CT C16 F6 A16* Conforms to the requirements of EN for principles 2 (MC) and 5 (PR) and 8 (IR) as a Coating (C). *) without sealer Appearance / Colours Part A - resin: white liquid Part B - filler: natural grey aggregate powder Colour: Finish: light grey matt Packaging Pre-batched (16 kg) and kg units. Storage Part A: Part B: (4 kg) and 6.67 plastic bottle (12 kg) and 20 kg plastic lined double paper bags Storage Conditions/ Shelf-Life Part A, : Part B: 12 months 12 months From date of production if stored in original, unopened and undamaged sealed packaging, in dry conditions at temperatures between +5 C and +30 C. Part A: Part B: Protect from frost Protect from humidity 2 2/2

3 Technical Data Chemical Base Acrylic modified cementitious mortar. Density Part A: ~ 1.05 kg/l (at +20 C) Part B: ~ 1.72 kg/l (at +20ºC) Parts A+B mixed: ~1.89 kg/l (at +20 C) (EN ) Layer Thickness 1.0 mm min. / 5.0 mm max. Fire Rating Class A2 (fl) S1 (EN ) Service Temperature -20 C to +40 C for continuous exposure. (Additional tests on-going). Mechanical / Physical Properties Compressive Strength (EN ) +23ºC / 50% r.h. 1 day ~ 1 N/mm 2 7 days ~ 10 N/mm 2 28 days ~ 20 N/mm 2 Flexural Strength (EN ) +23ºC / 50% r.h. 1 day ~ 0.5 N/mm 2 7 days ~ 4 N/mm 2 28 days ~ 7 N/mm 2 Bond strength EN 1574 Age Concrete Steel 7 days 1,15 MPa (p.c) 1,74 MPa (p.c) 28 days 2.01 MPa (a) 1,77 MPa (p.c) p.c. = product cohesive Tested as individual product a = adhesive s.c. = substrate cohesive Shore Hardness D ~ 54 ISO 868 Elasticity 0.71 kn/mm 2 UNE EN ISO 178 Impact sound reduction 11,79 db Internal Airborne noise reduction 11,85 db Internal Slip Resistance Slip Resistance Values (EN ) Substrate SRV Dry SRV Wet TRRL Pendulum, Rapra 4S Slider Abrasion Resistance 16,32 cm 3 / 50 cm 2 (EN (Böhme abrasion) Crack bridging capacity > 0.1 mm Class A1 : 21ºC EN C mm crack width Resistance Chemical Resistance The Sikafloor HyCem product range has not been designed as a chemical protection. For specific chemical resistance, always overcoat with a suitable product of the Sikafloor range. For occasional exposure or spillages, please consult. 3 3/3

4 System Information System Structure The system configuration as described must be fully complied with and may not be changed. Primer indicated below is suitable for each of these substrates: Green concrete (as soon as mechanical preparation is possible (24 hr 14 days) Damp concrete (> 14 days old) Damp aged concrete (rising moisture) Patching and repair: Layer thickness: 5 10 mm Sikafloor -Primer MRW Mortar: -Extended mortar mix. (See mixing for details) Levelling screed: Layer thickness: Topping: Sealer: 1-5 mm Sikafloor -Primer MRW (in a single layer) Sikafloor -Hardtop DB The defined build-ups are as follows: Topping: Sealer: a) Industrial use Sikafloor -Primer MRW (in a single layer) Sikafloor -Hardtop DB impregnation surface hardener b) Decorative Industrial use / Commercial Sikafloor -Primer MRW Base layer (optional) (1 5 mm) Topping: Sikafloor -42 HyCem (for colour, 1 5 mm) Decorative flakes PVA flakes at will Sealer: Sikafloor - TC W surface sealer (1 k acrylic) c) Crack bridging / Problem solver / intermediate layer / primer onto wooden floors / Bituminous substrates Sikafloor Primer MRW Crack bridging layer: Sikalastic -45 HyCem (1-3 mm) Base layer: (1-5 mm) Sealer: EP/PU sealcoat or self levelling screed. d) Car-park system Sikafloor Primer MRW Crack bridging layer: Sikalastic -45 HyCem (1-3 mm) Base layer: (3-5 mm, broadcast in excess with clean quartz sand mm Sealer: Sikafloor -359N as sealcoat in one or two coats. Never to leave Sikalastic -45 HyCem exposed directly to traffic. Please refer to the Product Data Sheets of Sikafloor -40/42 HyCem for build-ups a) and b). Application Details Consumption / Dosage Sikafloor -Primer MRW ~ kg/m 2 dependent on the substrate conditions, when repairing monolithic or vacuum concrete, or without a broadcast finish or when Sikafloor -40/-42/ HyCem is over coated with itself. Self-levelling screed: Sikafloor -40/-42/ HyCem ~ 1.85 kg/m 2 /mm in a 1 5 mm thick screed. ~ 5.5 kg/ m 2 for application with a 5 mm V-notch trowel for a nominal 2.0 mm screed These figures are theoretical and do not allow for any additional material due to surface porosity, surface profile, variations in level or waste, etc. 4 4/4

5 Substrate Quality Substrate Preparation Concrete that is only one day old, or is damp or alkaline, does not pose a problem. Ceramic tiles, natural stone, terrazzo, bitumen surfaces, plaster, wood and steel surfaces are all acceptable. The concrete substrate must be sound and of sufficient compressive strength (minimum 25 N/mm 2 ) with a minimum pull off strength of 1.5 N/mm 2. For applications onto green concrete (1 14 days) old the substrate must have reached at least 8 10 N/mm 2, and must have a minimum design strength of C25 The substrate can be damp but must be free of loose material, laitance, dust, standing water and free of all contaminants such as oil, grease, coatings and surface treatments etc. If in doubt, apply a test area first. Concrete substrates must be prepared mechanically using abrasive blast cleaning or scarifying equipment to remove cement laitance and achieve an open textured surface. Weak concrete must be removed and surface defects such as blow holes and voids must be fully exposed. Repairs to the substrate, filling of blowholes/voids and surface levelling must be carried out using appropriate products from the Sikafloor, SikaDur and Sikagard range of materials. can be used to cover local irregularities up to 5 mm, as well as cracks of the same width. High spots can be removed by grinding. All dust, loose and friable material must be completely removed from all surfaces before application of the product, preferably by brush or vacuum. The substrate must be thoroughly primed with Sikafloor -Primer MRW to avoid the formation of pores and pin-holes in the compound as a result of very porous surfaces absorbing the binder from the compound too quickly. Application Conditions / Limitations Substrate Temperature Ambient Temperature Substrate Moisture Content Relative Air Humidity Dew Point +7 C min. / +30 C max. +7 C min. / +30 C max. Can be applied on green or damp concrete, without any standing water. 20% min. / 80% max. Beware of condensation! The substrate and uncured floor temperature must be at least 3 C above the dew point to reduce the risk of condensation or blooming on the floor finish. Application Instructions Mixing Mixing Time Mixing Tools Part A : part B - packing size: (4: 12 kg) or 6.67 : 20 kg Flooring Screed: 1 : 3.0 (by weight) Extended mortar mix. Repair mortar: To repair surface irregularities and holes 3 to 5 cm in diameter and deeper than 5 mm and up to 10 mm the standard mix can be extended with dry and clean quartz sand ( mm) up to150% by weight Prior to mixing, shake part A (white liquid) briefly until homogenous and free from bottom sediment. Then pour into an clean empty container and gradually add part B (powder) into the liquid while stirring with a power mixer. Mix thoroughly for 1 2 minutes until a uniform mix has been achieved. Let the mix remain in the container for 3 5 minutes until the bubbles on the top of the mix are released. Pour on the floor within 15 minutes at 20ºC. Never add the liquid on to the powder. When dosing with additional aggregates, add them after adding part B to the mix. Mix using a slow speed electric mixer ( rpm) with helical paddle or other suitable equipment. Recommended are single or counter rotating double mortar (basket type) and forced action (pan type) mixers. Free fall mixers must not be used. 5 5/5

6 Application Method / Tools Cleaning of Tools Potlife Place mixed onto the primed substrate within 15 minutes of mixing and spread evenly to the required thickness uniformly with a rubber or metal trowel, spatula or adjustable rake and immediately roll with a spike roller to remove entrapped air and obtain an even thickness layer. To avoid stripes from the rake, smooth the wet surface with a metal spiked roller or smoothing trowel. Do not use additional water, which would disturb the surface finish and cause discolouration. A seamless finish can be achieved if a wet edge is maintained during application. To avoid too quick a hardening, or early shrinkage, do not work in direct sunshine or draught. Allow to cure overnight with good ventilation. For outdoor use: to avoid shrinkage cracks do not apply each coat thicker than maximum 1 mm, because of fast drying caused by wind and high temperatures. Clean all tools and application equipment with warm water immediately after use. Hardened / cured material can only be removed mechanically. (16 kg) or kg unit Temperature / r.h. 75% +10 C +20 C +30 C Time ~ 60 minutes ~ 30 minutes ~ 15 minutes Waiting Time / Overcoating has to be sealed, otherwise it is difficult to keep clean. Please consult for the various options. Before applying on Sikafloor -Primer MRW allow: Waiting time Substrate temperature Minimum Maximum +10 C 6 hours 72 hours +20 C 3 hours 48 hours +30 C 1 hour 24 hours Before applying on other screed products in the range: Waiting time Substrate temperature Minimum Maximum +10 C 24 hours 72 hours +20 C 12 hours 48 hours +30 C 8 hours 48 hours Before applying Sikafloor Hardtop DB sealer on to Sikafloor 40 HyCem allow surface to be walkable or preferably overnight setting Waiting time Substrate temperature Minimum Maximum +10 C 24 hours No limit +20 C 12 hours No limit +30 C 6 hours No limit can be overcoated with vapour tight coatings when the surface humidity falls below 4%! Not earlier than : Substrate temperature +10 C Waiting time 2 days 6 6/6

7 +20 C +30 C 1 day 1 day Note: It is advised to prime with Sikafloor Primer MRW over each successive coat of to ensure no pinholes appear, and allowing at least the minimum times indicated above between applications. Times are approximate at 50% r.h. and will be affected by changing ambient and substrate conditions, particularly temperature and relative humidity. Notes on Application / Limitations Always ensure good ventilation when using in a confined space to remove excess moisture. Contains cement. Please take the necessary precautions when handling irritant substances. Please refer to the Material Safety Datasheet. Freshly applied must be protected from damp, condensation and water for at least 24 hours. Apply primer and on a falling temperature. If applied during rising temperatures pin holing can occur. Prevent premature drying by protecting from strong wind and do not expose to direct sun light while fresh. Applications under extreme conditions (high temperature and low humidity) which can cause fast drying of the product must be avoided as the product does not allow the use of curing compounds. Under no circumstances add water to the mix. Colour variations can occur on unsealed through variations in thickness, drying speeds, draughts, exposure to direct sun light,etc, just like all cement based screeds. This however, will not adversely influence the mechanical properties. When overlaying with PMMA screeds, the surface of must be fully broadcast with sand mm. Curing Details Applied Product ready for use Temperature Foot traffic Light traffic Full cure +10 C ~ 24 hours ~ 3 days ~ 14 days +20 C ~ 15 hours ~ 2 days ~ 7 days +30 C ~ 7 hours ~ 1 day ~ 4 days Note: Times are approximate and will be affected by changing ambient and substrate conditions. Cleaning / Maintenance Methods Due to the texture of its surface, is not suitable to be used as wearing layer where easy staining can occur. A seal coat of the Sikafloor range with suitable cleaning capabilities is advisable. Remove dirt using a brush and/or vacuum. Do not use wet cleaning methods until the product is fully cured. Do not use abrasive methods or cleaners. Value Base All technical data stated in this Product Data Sheet are based on laboratory tests. Actual measured data may vary due to circumstances beyond our control. Local Restrictions Please note that as a result of specific local regulations the performance of this product may vary from country to country. Please consult the local Product Data Sheet for the exact description of the application fields. Health and Safety Information Legal Notes For information and advice on the safe handling, storage and disposal of chemical products, users shall refer to the most recent Material Safety Data Sheet containing physical, ecological, toxicological and other safety-related data. The information, and, in particular, the recommendations relating to the application and end-use of Sika products, are given in good faith based on Sika's current knowledge and experience of the products when properly stored, handled and 7 7/7

8 applied under normal conditions in accordance with Sika s recommendations. In practice, the differences in materials, substrates and actual site conditions are such that no warranty in respect of merchantability or of fitness for a particular purpose, nor any liability arising out of any legal relationship whatsoever, can be inferred either from this information, or from any written recommendations, or from any other advice offered. The user of the product must test the product s suitability for the intended application and purpose. Sika reserves the right to change the properties of its products. The proprietary rights of third parties must be observed. All orders are accepted subject to our current terms of sale and delivery. Users must always refer to the most recent issue of the local Product Data Sheet for the product concerned, copies of which will be supplied on request. 8 8/8

9 Note The following chapter is only mandatory for European countries. CE Labelling The harmonized European Standard EN Screed material and floor screeds - Screed materials - Properties and requirements specifies requirements for screed materials for use in floor construction internally. Structural screeds or coatings, i.e. those that contribute to the load bearing capacity of the structure, are excluded from this standard. Resin floor systems as well as cementitious screeds fall under this specification. They have to be CE-labelled as per Annex ZA. 3, Tables ZA. 1.1 or 1.5 and Z.A. 3.3 and fulfil the requirements of the given mandate of the Construction Products Directive (89/106): 12 Sika Sverige AB, Kvarnbacksvägen 3 SE Vadstena Sweden Factory Number 1083 EN CT C16 F6 A16 Cementitious screed material for indoors in buildings (systems as per Product Data Sheet) 2) Reaction to fire: Release of corrosive substances (Cementitious Screed): A2 (fl) S1 CT Water permeability: NPD 1) Water vapour permeability Compressive strength Flexural strength Abrasion: Sound insulation: Sound absorption: Thermal resistance: Chemical resistance: NPD C16 F6 A16 NPD NPD NPD NPD 1) No performance determined 2) Tested as part of a full system Tested as part of a full system *) Please fill in your relevant producer address EU Regulation VOC - Decopaint Directive According EU-Directive 2004/42, the maximum allowed content of VOC (Product category IIA / Cat. J / Type wb) is, ready for use, 140 g/l (limit 2010). The maximum content of, is <140 g/l VOC for the ready to use product. 9 9/9

10 Note CE Labelling The following chapter is only mandatory for European countries. The harmonized European Standard EN Products and systems for the protection and repair of concrete structures Definitions, requirements, quality control and evaluation of conformity Part 2 : Surface protection systems for concrete gives specifications for products and systems based on methods hydrophobic impregnation, impregnation and coating for the various principles presented under EN Products which fall under this specification have to be CE-labelled as per Annex ZA. 1, Tables ZA1a to ZA 1g according to the scope and relevant clauses there indicated, and fulfil the requirements of the given mandate of the Construction Products Directive (89/106): For flooring systems not dedicated to protect or reinstate the integrity of a concrete structure, EN applies. Products acc. EN used as flooring systems with mechanical loads also must fulfil EN Here below indicated are the minimum performance requirements set by the standard. For the specific performance results of the product to the particular tests, please see the actual values above in the PDS. XXXX Sika Sverige AB, Kvarnbacksvägen 3 SE Vadstena Sweden Factory Number XXXX-AAA-YYYY EN Surface protection system for concrete, rigid coating 2) Abrasion resistance (Taber Test) Permeability to water vapour Capillary absorption and permeability to water Impact resistance Adhesion strength by pull-off test Weight loss < 3000mg H22, 1000c, 1000gr Class I: S D < 5 m (permeable to water vapour) < 0,1 kg / (m 2.h 0.5 ) After loading no cracks or delamination Class I: 4Nm (horizontal with trafficking) 1.5 N/mm 2 2) No performance determined Tested as part of a full system Sika Services AG Tüffenwies 16 CH-8048 Zurich Switzerland Phone Telefax wwww.sika.com 10 10/10