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.
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 containers | Refer 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
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 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 Structure
- Substrate primer: Sikadur®-300 / Sikadur®-330.
- Impregnating / laminating resin: Sikadur®-300.
- Structural strengthening fabric: SikaWrap® (type to suit requirements).
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
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
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.
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.