Product Data Sheet Show all documents

Sikadur®-41 CF Normal

HIGH STRENGTH EPOXY RESIN PATCHING MORTAR

Sikadur®-41 CF Normal is a 3-component thixotropic mortar based on epoxy resin and selected aggregates. Sikadur®-41 CF Normal is made up of Sikadur-31 Part A and B and Sikadur Aggregates 501. The fully cured mortar exhibits physical and mechanical properties. Sikadur®-41 CF Normal is easy to apply and is ideally suited to site application.

Sikadur®-41 CF Normal has the following advantages:
  • Easy to mix and apply
  • Very good adhesion to most construction materials
  • High strength
  • Thixotropic: Non-sag in vertical and overhead applications
  • Hardens without shrinkage
  • Different coloured components (for mixing control)
  • No primer needed
  • High initial and ultimate mechanical strength
  • Good abrasion resistance
  • Good chemical resistance
Product Data Sheet Show all documents

Usage

As a repair and bonding mortar for:
  • Concrete elements
  • Hard natural stone
  • Ceramics, fibre cement
  • Mortar, Bricks, Masonry
  • Steel, Iron, Aluminium
  • Wood
  • Polyester, Epoxy
  • Glass
As a repair mortar:
  • Filling of cavities and voids
  • Vertical and overhead use
  • Corners and edges
As an abrasion and impact resistant wearing course:
  • Joint and crack arris / edge repair
 

Advantages

Sikadur®-41 CF Normal has the following advantages:
  • Easy to mix and apply
  • Very good adhesion to most construction materials
  • High strength
  • Thixotropic: Non-sag in vertical and overhead applications
  • Hardens without shrinkage
  • Different coloured components (for mixing control)
  • No primer needed
  • High initial and ultimate mechanical strength
  • Good abrasion resistance
  • Good chemical resistance

Packaging

11 kg, net pre-proportioned kits. Sikadur®-41 CF Normal consists of Sikadur-31 Parts A and B, plus Sikadur Aggregates 501.

Colour

Component A: white
Component B: dark grey
Component C: sand
Components A+B+C mixed: concrete grey

Product Details

Sustainability / Certifications / Approvals

CERTIFICATES AND TEST REPORTS

Mortar for structural and non-structural repair, tested according to EN 1504-3, provided with the CE-mark
Product Information

Composition

Epoxy resin

Shelf life

24 months from date of production

Storage conditions

Store in original, unopened, sealed and undamaged packaging in dry conditions at temperatures between +5 °C and +30 °C. Protect from direct sunlight.

Density

1.98 ± 0.1 kg/l (component A+B+C mixed) (at +21 °C)
Technical Information

Compressive strength

Curing time

Curing temperature

+10 °C

+23 °C

+30 °C

1 day~18 N/mm2~62 N/mm2~72 N/mm2
3 days~50 N/mm2~79 N/mm2~81 N/mm2
7 days~64 N/mm2~82 N/mm2~82 N/mm2

Modulus of elasticity in compression

~ 9,000 N/mm2 (14 days at +23 °C)(ASTM D 695)

Flexural-strength

Curing time

Curing temperature

+10 °C

+23 °C

+30 °C

1 day~9 N/mm2~22 N/mm2~25 N/mm2
3 days~19 N/mm2~26 N/mm2~30 N/mm2
7 days~31 N/mm2~38 N/mm2~38 N/mm2

Tensile strength

Curing time

Curing temperature

+25 °C

+35 °C

+45 °C

1 day~4 N/mm2~15 N/mm2~17 N/mm2
3 days~15 N/mm2~17 N/mm2~19 N/mm2
7 days~16 N/mm2~19 N/mm2~21 N/mm2

Tensile adhesion strength

Curing timeSubstrateCuring temperature

Adhesion strength

7 days

Concrete dry

+10 °C

> 4 N/mm2 *

7 days

Concrete moist

+10 °C

> 4 N/mm2 *

7 daysSteel+10 °C~6 N/mm2
7 daysSteel+23 °C~15 N/mm2

*100% concrete failure

Shrinkage

Hardens without shrinkage.

Coefficient of thermal expansion

3.5 x 10−5 1/K (Temp. range +23 °C − +60 °C)

(EN 1770)

Heat deflection temperature

Curing time

Curing temperature

HDT

7 days+23 °C+49 °C

(thickness 10 mm)

Application

Application Information

Mixing ratio

Component A : B : C = 2 : 1 : 2.5 by weight
Component A : B : C = 2 : 1 : 3.4 by volume

Layer thickness

3 mm min. / 60 mm max.
 

Sag flow

On vertical surfaces it is non-sag up to 20 mm thickness.(EN 1799)
 

Material temperature

Sikadur®-41 CF Normal must be applied at a temperatures between +10 °C and +30 °C.

Ambient air temperature

+10 °C min. / +30 °C max.

Dew point

Beware of condensation.
Substrate temperature during application must be at least 3 °C above dew point.

Substrate temperature

+10 °C min. / +30 °C max.

Substrate moisture content

Substrate must be dry or mat damp (no standing water)
Brush the adhesive well into the substrate

Pot Life

Temperature

Pot life*

Open time

+10 °C

~ 180 minutes

+23 °C

~ 60 minutes

+30 °C~ 40 minutes~ 50 minutes

*200 g

The pot life begins when the resin and hardener are mixed. It is shorter at high temperatures and longer at low temperatures. The larger the quantity mixed, the shorter the pot life. To obtain longer workability at high temperatures, the mixed adhesive may be divided into portions. Another method is to chill components A+B before mixing them (not below +5 °C).
Consumption

Consumption

The consumption of Sikadur®-41 CF Normal is ~ 2.0 kg/m2 per mm of thickness.
Application steps

SUBSTRATE QUALITY

Mortar and concrete must be older than 28 days (depends on minimal requirement of strengths). Verify the substrate strength (concrete, masonry, natural stone). The substrate surface (all types) must be clean, dry or mat damp (no standing water) and free from contaminants such as dirt, oil, grease, existing surface treatments and coatings etc. Steel substrates must be de-rusted similar to Sa 2.5 The substrate must be sound and all loose particles must be removed.

 

SUBSTRATE PREPARATION

Concrete, mortar, stone, bricks:
Substrates must be sound, dry or mat damp (no standing water) , clean and free from laitance, ice, grease, oils, old surface treatments or coatings and all loose or friable particles must be removed to achieve a laitance and contaminant free, open textured surface.
Steel:
Must be cleaned and prepared thoroughly to an acceptable quality i.e. by blast-cleaning and vacuum. Avoid dew point conditions.

MIXING

Pre-batched units:
Mix components A+B together for at least 3 minutes with a mixing spindle attached to a slow speed electric drill (max. 300 rpm) until the material becomes smooth in consistency and a uniform grey colour. Then add part C and continue until mixture is homogeneous. Avoid aeration while mixing. Then, pour the whole mix into a clean container and stir again for approx. 1 more minute at low speed to keep air entrapment at a minimum. Mix only that quantity which can be used within its pot life.

CLEANING OF EQUIPMENT

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

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