Sikafloor®-22 PurCem®
Sikafloor®-22 PurCem® is a multi-component, water-based coloured polyurethane hybrid flooring screed with self-smoothing properties. It is typically installed at 4 - 6 mm thickness.
- Good chemical resistance.
- High impact and mechanical resistance.
- High glass transition point.
- Excellent chemical resistance.
- Non-tainting / odourless.
- VOC free and environmental friendly.
- Can be applied to substrates with high moisture content (7 days old, or mature damp, concrete).
Usage
Sikafloor®-22 PurCem® is used as a scratch coat primer or basecoat in Sikafloor® PurCem® anti-slip system build ups, in areas of medium to heavy loading, high chemical exposure and abrasion.Advantages
- Good chemical resistance.
- High impact and mechanical resistance.
- High glass transition point.
- Excellent chemical resistance.
- Non-tainting / odourless.
- VOC free and environmental friendly.
- Can be applied to substrates with high moisture content (7 days old, or mature damp, concrete).
Packaging
Part A (pre-tinted) | 3.00 kg plastic pail |
Part A (neutral) | 2.500 kg plastic pail |
Part B | 3.00 kg plastic jerry can |
Part C | 17.00 kg plastic lined, double paper bags |
Part D | 0.500 kg plastic pouch for substrate A neutral |
Part A (pre-tinted)+B+C: 23.0 kg ready to mix units
Part A (neutral)+B+C+D: 23.0 kg ready to mix units
Colour
Part A (pre-tinted) | coloured liquid |
Part A (neutral) | light beige liquid |
Part B | brown liquid |
Part C | natural grey powder |
Part D | colourpack as per list below for part A neutral |
Standard colours: Agate Grey, Beige, Dusty Grey, Yellow Green , Golden Yellow, Carmine Red, Pebble Grey, Ultramarine Blue
Product Details
ENVIRONMENTAL INFORMATION
- Conformity with LEED v4 MRc 2 (Option 1): Building Product Disclosure and Optimization – Environmental Product Declarations.
- Conformity with LEED v4 MRc 4 (Option 2): Building Product Disclosure and Optimization - Material Ingredients.
APPROVALS / STANDARDS
- Polyurethane screed for concrete protection according to the requirements of EN 1504-2:2004 and conforms to the requirements of EN 13813: 2002, DoP 02 08 02 02 001 0 000014 1088, certified by Factory Production Control Body, 0086, certificate 541325, and provided with the CE-mark.
- EN1186, EN 13130, and prCEN/TS 14234 standards, and the Decree on Consumer Goods, representing the conversion of directives 89/109/EEC, 90/128/EEC and 2002/72/EC for contact with food stuffs, according to test report by ISEGA, 32758 U11 and 32759 U11, both dated December 6th, 2011. (Tests performed on Sikafloor® -20/21/22/29 and 31 PurCem® in standard and LP versions).
- British Standards Specifications (BSS) acceptance for use in the UK.
- Campden and Chorleywood Food Research Association, Ref. S/REP/125424/1a and 2a, dated 8th February, 2012.
- Fire classification report according to EN 13501-1 from Exova Warrington Fire for Sikafloor®-21 PurCem® No.317047, dated 24th of March, 2012.
- Liquid water transmission rate test report from the Technology Centre, Ref. 15456 dated January 25th, 2012.
- Thermal expansion coefficient and freeze-thaw cycle resistance performed at RWTH / IBAC, report nº M-1614 dated May 29th, 2012.
Chemical Base
Water-based polyurethane cement hybrid
Shelf Life
Part A | 12 months from date of production. Protect from freezing. |
Part B | 12 months from date of production. Protect from freezing. |
Part C | 6 months from date of production. Must be protected from humidity. |
Part D | 24 months from date of production. Protect from freezing. |
Storage Conditions
Original, unopened and undamaged sealed packaging, in dry conditions at temperature between +5 C° to +30 °C.
Density
Part A (pre-tinted)+B+C mixed: ~ 1.93 kg/l ± 0.03 (at +20°C)
Part A (neutral)+B+C+D mixed: ~ 1.93 kg/l ± 0.03 (at +20°C)
Compressive Strength
> 50 N/mm2 after 28 days at +23°C / 50% r.h. | (BS EN 13892-2) |
Flexural Strength
> 15 N/mm2 after 28 days at +23°C / 50% r.h. | (BS EN 13892-2) |
Tensile adhesion strength
Concrete failure | (EN 1542) |
Application
Mixing Ratio
- Part A (pre-tinted) : B : C = 1 : 1 : 5.67 (packaging size = 3.0 : 3.0 : 17) by weight
- Part A (neutral) : B : C : D = 0.87 : 1 : 5.67 : 0.13 (packaging size = 2.615 : 3.0 : 17 : 0.385) by weight
Mix full units only.
Layer Thickness
Base coat 4 – 6 mm
Ambient Air Temperature
+10°C min. / +40°C max.
Relative Air Humidity
85% max.
Dew Point
Beware of condensation!
The substrate and uncured floor must be at least 3°C above dew point to reduce the risk of condensation or other disturbance of the surface on the floor finish.
Substrate Temperature
+10°C min. / +40°C max.
Substrate Moisture Content
Can be installed on substrates with higher moisture content. No ponding water. Check rising moisture. The substrate needs to be visibly dry and have adequate pull-off strength min 1.5 N/mm2.
Pot Life
Temperatures | Time |
+10°C | ~35 - 40 minutes |
+20°C | ~22 - 25 minutes |
+30°C | ~15 - 18 minutes |
+35°C | ~12 - 15 minutes |
Waiting Time / Overcoating
Before overcoating a broadcasted Sikafloor® -22 PurCem® with other Sikafloor® PurCem® products, allow:
Substrate Temperature | Minimum | Maximum |
+10°C | 24 hours | No restriction |
+20°C | 24 hours | No restriction |
+30°C | 12 hours | No restriction |
+35°C | 12 hours | No restriction |
Times are approximate and will be affected be changing ambient and substrate conditions, particularly temperature and relative humidity.
If using primers other than a scratch coat, refer to the Technical Data Sheet of the respective product. Make sure that the primer and the scratch coat layer is fully cured before application of Sikafloor® PurCem® previous layer.
Consumption
~1.93 kg/m2/mm
MIXING
Premix part A with a low speed electric stirrer and then add part B and mix for 30 seconds. For the colourpack version, premix part A neutral with a low speed electric stirrer and add part D to it. Mix until a uniform colour is achieved. Add part B and mix for 30 seconds.
Use a double paddle (axis) mixer and gradually add part C (aggregate) to the mixed resin. Allow part C to blend for at least a further 2 minutes, to ensure complete mixing and a uniform moist mix is obtained. During the operations, scrape down the sides and bottom of the container with a flat or straight edge trowel at least once (parts A+B+C) to ensure complete mixing.
Mixing Tools
Use a low speed electric stirrer (300 - 400 rpm) for mixing parts A and B. For preparation of the mortar mix use a double paddle mixer.
APPLICATION
Prior to application, confirm substrate moisture content, relative humidity and dew point. As a scratch coat, Sikafloor®-22 PurCem® can be applied using a steel trowel. As a body coat, Sikafloor®-22 PurCem® can be applied using a toothed trowel or pin screed, to the desired thickness, or a steel trowel. Remove air with a spike roller.
For further details please refer to the related System Data Sheet.
CLEANING OF TOOLS
Clean all tools and application equipment with Thinner C immediately after use. Hardened / cured material can only be mechanically removed.