Product Data Sheet
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Sikadur®-300

Epoxy impregnating / laminating resin for SikaWrap® structural strengthening fabrics

Sikadur®-300 is a 2-part, epoxy based impregnating / laminating resin for SikaWrap® structural strengthening fabrics.

  • Easy to mix.
  • Application by impregnation roller.
  • Formulated for manual or mechanical saturation methods.
  • Good adhesion to many substrates.
  • High mechanical properties.
  • Extra long pot-life.
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Product Data Sheet
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Usage

  • As an impregnating / laminating resin for the SikaWrap® fabric reinforcement wet application method.
  • As a substrate primer for the wet application method.
 

Advantages

  • Easy to mix.
  • Application by impregnation roller.
  • Formulated for manual or mechanical saturation methods.
  • Good adhesion to many substrates.
  • High mechanical properties.
  • Extra long pot-life.

Packaging

Part A

22,305 kg pre-batched unit

Part B

7,695 kg pre-batched unit

Bulk containersRefer to current price list

Refer to current price list for packaging variations

Colour

Part A

~amber liquid

Part B

~pale yellow liquid

Parts A + B mixed

~light-yellow liquid

Product Details

Sustainability / Certifications / Approvals

APPROVALS / STANDARDS

  • Flat bars and composite mats PN-EN 196-1, DIN 53452, Sika CarboDur, IBDiM, Approval No. AT/2008-03-0336/1.
  • CE Marking and Declaration of Performance to EN 1504-4: Structural bonding.
Product Information

Product Declaration

EN 1504-4: Structural bonding

Chemical Base

Epoxy resin

Shelf Life

24 months from date of production

Storage Conditions

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.

Density

Mixed resin ~1,16 kg/l

Value at +23 °C.

 

Viscosity

Shear rate: 50/s

Temperature

Viscosity

+15 °C

~2000 mPa·s

+23 °C

~700 mPa·s

+40 °C~200 mPa·s
System information

System Structure

  • Substrate primer: Sikadur®-300 / Sikadur®-330.
  • Impregnating / laminating resin: Sikadur®-300.
  • Structural strengthening fabric: SikaWrap® (type to suit requirements).
Technical Information

Flexural E-Modulus

~2800 N/mm2 (7 days at +23 °C)(DIN EN 1465)

Tensile Strength

~45 N/mm2 (7 days at +23 °C)(ISO 527)

Tensile adhesion strength

Concrete fracture (> 4 N/mm2) on sandblasted substrate

(EN ISO 4624)

Coefficient of Thermal Expansion

~6,0 × 10−5 (±0,2 × 10–5) 1/K

(EN 1770)

(linear expansion between -20 °C and +40 °C)

Service Temperature

–40 °C to +45 °C

Glass transition temperature

Curing time

Curing temperature

TG

30 days

+30 °C

+53 °C

Heat deflection temperature

Curing time

Curing temperature

HDT

7 days+15 °C+43 °C
7 days+23 °C+49 °C
3 days+40 °C+60 °C
7 days+40 °C+66 °C

 Resistant to continuous exposure +45 °C.

Application

Application Information

Mixing Ratio

Part A : Part B = 100 : 34,5 by weight

Ambient Air Temperature

+15 °C min. / +40 °C max.

Dew Point

Beware of condensation.
The substrate and uncured applied resin must be at least +3 °C above dew point to reduce the risk of condensation or blooming on the resin surface.

Substrate Temperature

+15 °C min. / +40 °C max.

 

Substrate Moisture Content

≤ 4 % parts by weight

The following test methods can be used: Sika®-Tramex meter,
CM-measurement or Oven-dry-method. No rising moisture according to ASTM (Polyethylene-sheet).

Pot Life

Temperature

Pot-life

Open time

+15 °C

~3 hours~6 hours

+23 °C

-~4 hours
+40 °C~60 minutes~90 minutes

The pot-life begins when Parts A+B are mixed. It is shorter at high temperatures and longer at low temperatures. The greater the quantity mixed, the shorter the pot-life. To obtain longer workability at high temperatures, the mixed adhesive may be divided into smaller quantities. Another method is to chill Parts A+B before mixing (although not below +5 °C).
Consumption

Consumption

Guide: ~0,4–1,0 kg/m2

Also refer to:

  • Method Statement: SikaWrap® manual wet application - Ref. 850 41 03.
  • Method Statement: SikaWrap® saturator machine wet application - Ref. 850 41 04.
     
Application steps

SUBSTRATE QUALITY

Substrates must be structurally sound and of sufficient tensile strength to provide a minimum tensile strength of 1,0 N/mm2 or as required in the design specification.

Reference must be made to the Sika® Method Statements:

  • Method Statement: SikaWrap® manual wet application - Ref. 850 41 03.
  • Method Statement: SikaWrap® saturator machine wet application - Ref. 850 41 04.

SUBSTRATE PREPARATION

Reference must be made to the Sika® Method Statements:

  • Method Statement: SikaWrap® manual wet application - Ref. 850 41 03.
  • Method Statement: SikaWrap® saturator machine wet application - Ref. 850 41 04.

MIXING

Pre-batched unit

Prior to mixing all parts, mix Part A (resin) briefly using an electric single or double paddle mixer (maximum 300 rpm) with a spiral paddle.

Add Part B (hardener) to part A and mix Parts A+B continuously for at least 3 minutes until a uniform mix has been achieved. To ensure thorough mixing, pour materials into a clean container and mix again for approximately 1 minute. Overmixing must be avoided to minimise air entrainment. Mix full units only. Mixing time for A+B = ~4 minutes.

Bulk container
Add both parts in the correct proportion into a suitable clean, dry container and mix in the same way as for the pre-batched unit. Mix only the quantity which can be used within its pot-life.

CLEANING OF TOOLS

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

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