Sikafloor-81 EpoCem, Epoxy-Cement Slab, 2-3mm
SIKA
Sika is a global leader in specialty chemicals for the construction and industrial sectors. The company develops and supplies innovative products and systems for bonding, sealing, damping, reinforcing, and protecting structures. With a strong focus on sustainability and performance, Sika serves a wide range of applications including concrete production, waterproofing, roofing, flooring, and structural strengthening.
Read moreEpoxy-cement hybrid multipurpose flooring mortar and self-smoothing screed (1.5–3.0 mm (0.0591–0.118 in)) Sikafloor®-81 EpoCem® is a 3-part, epoxy modified cementitious, multipurpose flooring mortar. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||
UsageOn interior industrial flooring cementitious substrates including vacuum dewatered concrete floors as a: Temporary moisture barrier (TMB)
Self-smoothing screed
Repair mortar
Concrete repair and protection EN standards principle and method approach
Advantages
PackagingPre-batched 23 kg (50.7 lb) units.
Refer to current price list for packaging variations ColourFinal floor appearance: Smooth, matt finish
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Typical Product Data
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ApplicationMixing Ratio Packaging size: Part A : Part B : Part C = 1.14 kg (2.51 lb) : 2.86 kg (6.31 lb) : 19 kg (41.9 lb) 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 23 kg (50.7 lb) unit of mixed Sikafloor®-81 EpoCem® add 5–10 kg (11–22 lb) of: quartz sand 0.6–1.2 mm (0.0236–0.0472 in) and quartz sand 2.0–3.0 mm (0.0787–0.118 in) Final mix will be: 33–43 kg (72.8–94.8 lb) Ambient Air Temperature +8 °C (+46 °F) min. / +30 °C (+86 °F) max. Layer Thickness
Relative Air Humidity 20 % min. / 80 % max. Substrate Temperature +8 °C (+46 °F) min. / +30 °C (+86 °F) max. Substrate Moisture Content 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. Pot Life
23 kg (50.7 lb) units Values at 75 % R.H Curing Time 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:
Consumption
Also refer to the following System Data Sheets:
These figures are theoretical and do not allow for any additional material due to surface porosity, surface profile, variations in level or wastage, etc. EQUIPMENT Select the most appropriate equipment required for the project: Substrate preparation
For other types of preparation equipment, contact Sika Technical Services Mixing
For other types of mixing equipment, contact Sika Technical Services Application: TBM & Self-levelling screed
Application: Concrete patch repairs
Finishing
MIXING 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 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 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 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 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 minutes 30 seconds. A+B+C+ aggregate = ~6 minutes 30 seconds. APPLICATION TMB and SELF- LEVELLING SCREED Primer Pour mixed Sikafloor®-155 WN or Sikafloor® EpoCem® Module 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. CLEANING OF TOOLS Clean all tools and application equipment with water immediately after use. Hardened / cured material can only be removed mechanically. |