Product Data Sheet Safety Data Sheet Show all documents
Sikafloor®-91

Sikafloor®-91

3-PART EPOXY screed

Sikafloor®-91 is a coloured 3-component solvent free epoxy resin based mortar for patching and screeding industrial floors subject to heavy traffic.  All components are prebatched in the correct mixing ratio.

  • Very high abrasion resistance
  • Very high impact resistance
  • High compressive and flexural strength
  • High bond strength
  • Supplied in prebatched units
  • Efficient and easy application
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Product Data Sheet Safety Data Sheet Show all documents

Usage

Epoxy screeds with a layer thickness of 3–40 mm in areas requiring resistance to heavy mechanical wear such as:
 
  • Warehouses
  • Machine shops
  • Workshops
  • Chemical plants
  • Water treatment plants
  • Storage areas
  • Plant rooms
  • Breweries
  • Pharmaceutical plants
  • Steel works
 

Advantages

  • Very high abrasion resistance
  • Very high impact resistance
  • High compressive and flexural strength
  • High bond strength
  • Supplied in prebatched units
  • Efficient and easy application

Packaging

Part A:

1.875 kg containers

Part B:

0.625 kg containers

Part A+B:

2.5 kg unipacks

Part C:25 kg bag
Part A+B+C:27.5 kg ready to mix units

Colour

Resin - Part A

transparent, liquid

Hardener - Part B

brownish, liquid

Quartz sand - Part C

grey, powder

Grey

Product Details

Product Information

Chemical Base

Epoxy

Shelf Life

24 months from date of production

Storage Conditions

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

Density

Part A:

~ 1.10 kg/l at +23°C

Part B:

~ 1.02 kg/l at +23°C

Mixed mortar:

~ 2.2 kg/l at +23°C

Solid content by weight

~100 %

Solid content by volume

~100 %
Technical Information

Compressive Strength

~ 80 N/mm² (7 days / +23°C)

(EN 196-1)

Flexural Strength

~ 40 N/mm² (7 days / +23°C / 50% R.H.)

(EN 196-1)

Tensile Adhesion Strength

> 1.5 N/mm2 (failure in concrete)

(EN 4624)

Thermal Resistance

Exposure

Dry Heat

Permament+50 °C
Short Term Max7 d +80 °C

Short Term Max

12 h +100 °C

Short-term moist/wet heat* up to +80°C where exposure is only occasional (i.e. during steam cleaning etc.). *No simultaneous chemical and mechanical exposure".

Application

Application Information

Mixing Ratio

Part A : part B : part C= 7.5 : 2.5 : 100 (by weight)

Ambient Air Temperature

+10°C min. / +30°C max.

Relative Air Humidity

80 % r.h. max.

Dew Point

Beware of condensation!
The substrate and uncured mortar must be at least 3ºC above the dew point to reduce the risk of condensation or blooming on the mortar finish.

Substrate Temperature

+10°C min. / +30°C max.

Substrate Moisture Content

< 4 % pbw moisture content.
Test method: Sika®-Tramex meter, CM - measurement or Oven-dry-method.
No rising moisture according to ASTM (Polyethylene-sheet).

Pot Life

Temperatures

Time

+10 °C

~ 60 minutes

+20 °C~ 40 minutes

+30 °C

~ 25 minutes

Curing Time

Before applying Sikafloor coating on Sikafloor®-91 allow:

Substrate Temperature

Minimum

Maximum

+10 °C24 hours

4 days

+20 °C

14 hours

2 days

+30 °C

8 hours

1 day

Times are approximate and will be affected by changing ambient conditions particularly temperature and relative humidity.
Consumption

Consumption

~2.2kg/m2/mm
These figures are theoretical and do not allow for any additional material due to surface porosity, surface profile, variations in level or wastage etc.
Application steps

MIXING

Prior to mixing, stir part A mechanically. When all of part B has been added to part A, mix continuously for 2 minutes until a uniform mix has been achieved.
When parts A and B have been mixed, the quartz sand or if required the Extender T must be mixed with part A and B for a further 2 minutes until a uniform mix has again been achieved.  To ensure thorough mixing pour materials into another container and mix again to achieve a consistent mix.  Over mixing must be avoided to minimise air entrapment.


Mixing Tools
Sikafloor®-91 (part A + B) must be thoroughly mixed using a low speed electric stirrer (300 - 400 rpm) or other suitable equipment.
For Sikafloor®-91 (part A + B + C) mortars use a forced action mixer of rotating pan, paddle or tough type.

APPLICATION

Prior to application, confirm substrate moisture content, relative humidity and dew point.
If substrate moisture content is more than 4 % pbw, Sikafloor® EpoCem® may be applied as a temporary
moisture barrier (T.M.B.) system.
For strongly absorbent substrates apply a primer coat.
The primer has to be cured tack free before the bonding bridge is applied.
Primer:
Make sure that a continuous, pore free film covers the substrate.
Apply Sikafloor®-150/-151 by brush, roller or squeegee.
Preferred application is by using a squeegee and then backrolling crosswise.
Bonding bridge / impregnation:
Make sure that a continuous, pore free film covers the substrate.
Apply Sikafloor®-150/-151 by brush, roller or squeegee.
Preferred application is by using a squeegee and then backrolling crosswise.
Mortar screed:
Apply the mortar screed evenly on the tacky bonding bridge, using levelling boards and guide rails as necessary.
After a short waiting time compact and finish the mortar with a trowel or Teflon coated power float
(usually 20 - 90 rpm). Power floats can only be used on mortar layers > 8 mm.

CLEANING OF TOOLS

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

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