Sikafloor®-81 EpoCem®

• 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.
• Conformity with LEED v2009 IEQc 4.2: Low-Emitting Materials - Paints and Coatings.
• IBU Environmental Product Declaration (EPD).

• CE Marking and Declaration of Performance to EN 1504-2 - Surface protection product for concrete - Coating
• CE Marking and Declaration of Performance to EN 1504-3 - Concrete repair product for structural repair
• CE Marking and Declaration of Performance to EN 13813 - Resin screed material for internal use in buildings
• Migration test EN 23270, Sikafloor^®-81 EpoCem, kiwa, Report No. P 8740a
• Water permeability test DIN 1048-5, Sikafloor^®-81 EpoCem, Polymer Institut, Report No. P 3439
• Fire testing EN 13501-1, Sikafloor^®-81 EpoCem, MPA Dresden, Report No. 041706
• Fire testing EN 13501-1, Sikafloor^®-81 EpoCem, Hoch, Report No. KB-Hoch-170138
• Sliding test DIN 51130, Sikafloor^®-264 N, Roxeler, Certificates No. 020044-17-7, 020044-17-7a, 020044-17-8a

Epoxy modified cementitious mortar

The product must be stored in original, unopened and undamaged packaging in dry conditions at temperatures between +5°C and +30°C. Always refer to packaging.

 
Part A, part B: Protect from frost

Part C: Protect from humidity

All Density values at +20 °C.       

EN 1504-2 - Surface protection product for concrete - Coating

Complies with the general requirements of EN 1504-3: Class R4       

EN 13813 - Resin screed material for internal use in buildings

Values +23°C / 50 % r.h.

Values at +23 °C / 50 % r.h.

The Sikafloor® EpoCem® product range has improved chemical resistance over plain concrete in aggressive environments, but is not 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.

-30 °C to +80 °C for continuous exposure.

Carbonation resistance for 3 mm thickness: R ≈ 12.5 m

Packaging size:

Part A : Part B : Part C = 1.6 kg : 4.0 kg : 27.2 kg

TMB and Self-smoothing screed

Concrete patch repair mortar
The standard Sikafloor®-81 EpoCem® mix can be bulked out with dry quartz sand.
For each 32.8 kg unit of Sikafloor®-81 EpoCem® prepared as indicated below, add:

For this application, to achieve a good bond of the mortar to the substrate, SikaTop®-Armatec®-110 EpoCem® must be used as bonding bridge. Apply the mortar wet on wet to the primer.

+8 °C min. / +30 °C max.

20 % min. / 80 % max.

+8 °C min. / +30 °C max.

Can also be applied on green or damp concrete with no standing water. Although the system can be applied onto green concrete surfaces (> 24 hours), it is advised to allow at least 3 days for early concrete shrinkage to occur in order to prevent shrinkage cracks from appearing on the TMB / screed surface.

Values at 75 % R.H 

Once Sikafloor®-81 EpoCem® is tack free it is possible to apply vapour permeable resin finishes.
For the application of vapour tight resin finishes on Sikafloor®-81 EpoCem®, allow the substrate moisture content to fall below 4% and not earlier than:

Also refer to the following System Data Sheets: 

• Sikafloor® MultiDur ES-14 N ECC
• Sikafloor® MultiDur EB-24 N ECC
• Sikafloor® MultiDur ET-14 N ECC

These figures are theoretical and do not allow for any additional material due to surface porosity, surface profile, variations in level or wastage, etc.

Select the most appropriate equipment required for the project:

Substrate preparation

• Abrasive blasting cleaning equipment
• Planing machine
• Scarifying machine
• High pressure water blasting equipment

• Mechanical hand held tools for breaking out concrete

For other types of preparation equipment, contact Sika Technical Services

Mixing

• Electric single or double paddle mixer (300–400 rpm) with helix paddle
• Forced action / rotating pan / double paddle or trough type mixer (300–400 rpm).
• Scraper
• Clean mixing containers

For other types of mixing equipment, contact Sika Technical Services

Application: TBM & Self-levelling screed

• Mixed material carrier
• Pin leveller
• Trowels
• Spiked roller
• Squeegee
• Fleece rollers

Application: Concrete patch repairs

• Plasterers hawk
• Trowel

Finishing

• Trowel ( PVC or wooden)
• sponge

TMB and Self-levelling screed

Prior to mixing, shake Part A (white liquid) briefly until uniformly mixed. Then pour into Part B container and shake vigorously for at least 30 seconds. When dosing out of drums, uniformly mix Parts A and B separately before mixing together

Pour the mixed binder mixture (Parts A+B) into a suitable mixing container (capacity ~30 litres). Using an electric single or double paddle mixer or other similar equipment, gradually add Part C. Mix for a further 3.0 minutes until a uniform lump free mix has been achieved. Mix full units only. Do not add water. Mixing time for A+B = ~30 seconds. A+B+C = ~3.0 minutes 30 seconds.

Concrete patch repair mortar

Prior to mixing, shake Part A (white liquid) briefly until uniformly mixed. Then pour into Part B container and shake vigorously for at least 30 seconds. When dosing out of drums, uniformly mix Parts A and B separately before mixing together

Pour the mixed binder mixture (Parts A+B) into a suitable mixing container (capacity ~30 litres). Using an electric single or double paddle mixer or other similar equipment, gradually add Part C. Mix for a further 3.0 minutes until a uniform lump free mix has been achieved. When Parts A+B+C have been thoroughly mixed, gradually add the additional aggregates in the required quantities. Mix for a further 3.0 minutes until a uniform mix has been achieved. Mix full units only. Do not add water. Mixing time for A+B = ~30 seconds. A+B+C = ~3.0 minutes 30 seconds. A+B+C+ aggregate = ~6.0 minutes 30 seconds.

TMB and SELF- LEVELLING SCREED

Primer

Pour mixed Sikafloor®-80 EpoCem® Primer onto the prepared substrate and apply by brush, roller or squeegee then back roller in two directions at right angles to each other. Ensure a continuous, pore free coat covers the substrate.

Sikafloor®-81 EpoCem®

Pour mixed Sikafloor®-81 EpoCem® onto the prepared primed substrate and spread evenly using a suitable trowel or pin leveller to the required thickness.
Spike roller immediately in two directions at right angles to each other to remove trowel marks, aid air release, ensure an even thickness and obtain the required surface finish. A seamless finish can be achieved if a ‘wet’ edge is maintained during application.

CONCRETE PATCH REPAIR

Bonding primer

Apply the mixed SikaTop®-Armatec®-110 EpoCem® onto the prepared substrate by brush.

Repair Mortar

Place the mixed Sikafloor®-81 EpoCem® repair mortar onto the bonding primer 'wet on wet' by gloved hand or trowel between the minimum and maximum layer thicknesses without the formation of voids.

Surface finishing

Finishing must be carried out to the required surface texture using trowel and / or sponge as soon as the repair mortar has started to harden.

Clean all tools and application equipment with water immediately after use. Hardened / cured material can only be removed mechanically.