Sikafloor®-81 EpoCem®

Sikafloor®-81 EpoCem®
SELF-LEVELLING EPOXY-CEMENT FLOOR TOPPING
DESCRIPTION
Sikafloor®-81 EpoCem® is a three part, epoxy modified cementitious, fine textured mortar for selfsmoothing floor screeds in thin layers of 1.5 to 3
mm.
USES
Sikafloor®-81 EpoCem® may only be used by experienced professionals.
As a Temporary Moisture Barrier (TMB)
(min. 2 mm thick) allowing the application of Epoxy,
Polyurethane and PMMA* resin floors requiring dry
substrates, over high moisture content substrates,
even green concrete, for a lasting solution.
As a self-smoothing screed for:
Levelling or patching horizontal concrete surfaces,
in new work or repairs, in aggressive chemical environments
▪
Floor topping on non-ventilated damp substrates
without particular aesthetic requirements
▪
Levelling layer under Epoxy, Polyurethane and
PMMA* floor coatings / screeds, tiles, sheet floors,
carpets or wooden floors
▪
Repair and maintenance of monolithic and vacuum
concrete floors
▪
Extended with quartz sand, as a patching and repair
mortar:
Under Epoxy, Polyurethane and PMMA floor coatings / screeds
▪
Designed for use on cementitious substrates:
Suitable for moisture control (Principle 2, method
2.3 of EN 1504-9)
▪
Suitable for physical resistance (Principle 5, method
5.1 of EN 1504-9)
▪
Suitable for restoration work (Principle 3, method
3.1 of EN 1504-9).
▪
▪ Suitable for preserving or restoring passivity (principle 7, method 7.1 and 7.2 of EN 1504-9).
Suitable for increasing resistivity (Principle 8, method 8.3 of EN 1504-9)
* See Notes on Application / Limitations
▪
1 / 7
CHARACTERISTICS / ADVANTAGES
Can be top coated with resin based floors after 24
hours (+20ºC, 75% r.h.)
▪
Prevents osmotic blistering of resin based coatings
over damp substrates
▪
▪ Economical and fast, easy application
▪ Class R4 of EN 1504-3
▪ Good levelling properties
Impervious to liquids but permeable to water vapour
▪
▪ Frost and de-icing salt resistant
▪ Good chemical resistance
▪ Thermal expansion properties similar to concrete
Excellent bond to green or hardened concrete
whether damp or dry
▪
▪ Excellent early and final mechanical strengths
▪ Excellent resistance to water and oils
▪ Ideal preparation for smooth surface finishes
▪ For internal use
▪ Contains no solvents
▪ Will not corrode reinforcement steel
APPROVALS / CERTIFICATES
ITT reports (*) for EN 1504-2 Ref. 09/349-963,
dated May 6th 2009 and EN 1504-3 Ref. 09/351-
965 dated May 4th, 2009 by Applus Laboratory,
Barcelona, Spain.
▪
Epoxy modified cementitious mortar for selfsmoothing floor screeds according to EN 1504-2:
2004 , EN 1504-3: 2005 and EN 13813:2002, DoP 02
08 02 01 001 0 000001 1001, certified by Factory
Production Control Body No. 2116 and provided
with the CE-mark
▪
PRODUCT INFORMATION
Composition Epoxy modified cementitious mortar.
Packaging Pre-batched 23 kg units.
Part A 1.14 kg plastic container
Part B 2.86 kg plastic container
Part C 19 kg plastic bags
Appearance / Colour Part A-resin: white liquid
Part B – hardener transparent yellow liquid
Part C – filler: natural grey aggregate powder
Colour: light grey
Finish Colour: Matt grey
Shelf life
Part A, B, C: 12 months
PRODUCT DATA SHEET
Sikafloor®-81 EpoCem®
October 2019, Version 02.01
020814010020000001
2 / 7
Storage conditions The product must be 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
Part C: Protect from humidity
Density
Part A ~ 1.05 kg/l (at +20°C)
Part B ~ 1.03 kg/l (at +20°C)
Mixed resin ~ 1.72 kg/l (at +20°C)
Mixed A+B+C: ~ 2.10 kg/l (at +20°C)
(EN 1015-6)
TECHNICAL INFORMATION
Compressive Strength +23ºC / 50% r.h.
1 day ~15 N/mm2
7 days ~50 N/mm2
28 days ~60 N/mm2
(EN 13892-2)
Tensile Strength in Flexure +23ºC / 50% r.h.
1 day ~5.8 N/mm2
7 days ~11.1 N/mm2
28 days ~14 N/mm2
(EN 13892-2)
Freeze Thaw De-Icing Salt Resistance Resistance factor WFT-L 98% (High) D-R (SN / VSS 640 461)
Carbonation Resistance Carbonation resistance for 3 mm thickness: R ≈ 12.5 m
PRODUCT DATA SHEET
Sikafloor®-81 EpoCem®
October 2019, Version 02.01
020814010020000001
3 / 7
SYSTEMS
Systems 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)
▪ Damp concrete (> 14 days old)
▪ Damp aged concrete (rising moisture)
Patching and repair:
Layer thickness: 3 – 9 mm
Primer: SikaTop®-Armatec®-110 EpoCem®
Mortar: Sikafloor®-81 EpoCem® -Extended mortar mix. (See mixing for
details)
Levelling screed for medium substrate roughness:
Layer thickness: 1.5 – 3 mm
Primer: Sikafloor®-155 WN
Screed: Sikafloor®-81 EpoCem®
Top coat: Suitable product from the Sikafloor® and Sikagard® range.
Interlayer priming for Sikafloor -81/82 EpoCem:
Bonding bridge: Sikafloor®-155 WN
Please refer to the System Data Sheet of :
Sikafloor® MultiDur ES-14 ECC Low textured epoxy hybrid screed
with coloured epoxy roller coat
Sikafloor® MultiDur EB-24 ECC Broadcast unicolour epoxy floor
covering over epoxy hybrid screed
Sikafloor® MultiDur EB-25 ECC Broadcast unicolour epoxy floor
covering over epoxy hybrid screed
Sikafloor® MultiDur ET-14 ECC Textured unicolour epoxy roller
coat over epoxy hybrid screed
APPLICATION INFORMATION
Part A : part B : part C – packing size : 1.14 : 2.86 : 19 kg
Flooring Screed:
At temperatures between +12ºC to +25ºC:
1 : 2.5 : 17 (by weight)
Parts (A+B) : C = 4 kg : 19 kg
At temperatures between +8ºC to +12ºC and +25ºC to +30ºC:
The amount of Part C can be reduced to 18 kg in order to improve
workability.
Please note:
Never reduce Part C by more than this amount.
1 : 2.5 : 15.8 (by weight)
Parts (A+B) : C = 4 kg : 18 kg
Extended mortar mix. Repair mortar:
To repair surface irregularities and holes 3 to 5 cm in diameter and deeper
than
3 mm and up to 9 mm the standard Sikafloor®-81 EpoCem® mix can be
extended with dry quartz sand.
For each 23 kg unit of Sikafloor®-81 EpoCem® prepared as indicated
below, add:
▪ Sikadur®-509 (quartz sand 0.7 – 1.2 mm) 5 – 10 kg and
▪ Sikadur®-510 (quartz sand 2.0 – 3.0 mm) 5 – 10 kg
Final mix will be : 33 – 43 kg
For this application, to achieve a good bond of the mortar to the substrate,
Mixing Ratio
PRODUCT DATA SHEET
Sikafloor®-81 EpoCem®
October 2019, Version 02.01
020814010020000001
4 / 7
SikaTop®-Armatec®-110 EpoCem® must be used as bonding bridge. Apply
the mortar wet on wet to the primer.
Ambient Air Temperature +8°C min. / +30°C max.
Consumption Self smoothing screed: Sikafloor®-81 EpoCem®
~2.25 kg/m2/mm
Extended mortar mix: Sikafloor®-81 EpoCem®
~2.4 kg/m2/mm
Please refer to the System Data Sheet of :
Sikafloor® MultiDur ES-14 ECC Low textured epoxy hybrid screed
with coloured epoxy roller coat
Sikafloor® MultiDur EB-24 ECC Broadcast unicolour epoxy floor
covering over epoxy hybrid screed
Sikafloor® MultiDur EB-25 ECC Broadcast unicolour epoxy floor
covering over epoxy hybrid screed
Sikafloor® MultiDur ET-14 ECC Textured unicolour epoxy roller
coat over epoxy hybrid screed
These figures are theoretical and do not allow for any additional material
due to surface porosity, surface profile, variations in level or wastage, etc.
Layer Thickness 1.5 mm min. / 3.0 mm max.
If Sikafloor®-81 EpoCem® is used as a Temporary Moisture Barrier (TMB), a
minimum of 2 mm must be applied.
Relative Air Humidity 20% min. / 80% max.
Substrate Temperature +8°C min. / +30°C max.
Substrate Moisture Content Can be applied on green or damp concrete, without any standing water.
Although the product can be applied onto green concrete surfaces (> 24
hours), it is advised to allow at least 3 days for early shrinkage of concrete
to occur in order to prevent concrete shrinkage cracks from appearing on
the screed surface.
Pot Life Temperature / R.H 75% Time
+10°C ~ 40 minutes
+20°C ~ 20 minutes
+30°C ~ 10 minutes
23 kg units
Curing Time Once Sikafloor®-81 EpoCem® is tack free it is possible to apply vapour
permeable seal coats.
For the application of vapour tight coatings on Sikafloor®-81 EpoCem®,
allow the surface moisture to fall below 4%, not earlier than:
Substrate Temperature Waiting Time
+10°C ~ 2 days
+20°C ~ 1 day
+30°C ~ 1 day