Sikadur®-32 Normal
Sikadur®-32 Normal is a moisture tolerant, structural, two part bonding agent, based on a combination of epoxy resins and special fillers, designed for use at temperatures between +10 °C and +30 °C.
- Easy to mix and apply
- Suitable for dry and damp concrete surfaces
- Very good adhesion to most construction materials
- High bond strength
- Hardens without shrinkage
- Different coloured components (for mixing control)
- No primer needed
- High initial and ultimate mechanical strength
- Impermeable to liquids and water vapour
- Good chemical resistance
Usage
Sikadur®-32 Normal is used as a structural bonding agent and adhesive for:- Concrete elements
- Mortar, bricks, masonry
- Steel, iron, aluminium
- Polyester / fibreglass and epoxy resin materials
- Bonding of new concrete screeds to existing floors
- Bonding of plaster toppings and overlays to existing substrates
- Bonding new concrete to old at construction joints
- Bonding of tile bedding mortars to existing substrates
Advantages
Sikadur®-32 Normal has the following advantages:- Easy to mix and apply
- Suitable for dry and damp concrete surfaces
- Very good adhesion to most construction materials
- High bond strength
- Hardens without shrinkage
- Different coloured components (for mixing control)
- No primer needed
- High initial and ultimate mechanical strength
- Impermeable to liquids and water vapour
- Good chemical resistance
Packaging
3 litre unit and 18 litre unit. (Refer to Sikadur®-32+ for a 1kg unit)
Colour
Component A: white
Component B: dark grey
Components A+B mixed: light grey
Product Details
APPROVALS / STANDARDS
- Structural bonding agent tested according to EN 1504-4, provided with the CE-mark
Chemical Base
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
1.4 ± 0.1 kg/l (component A+B mixed) (at +23 °C) |
Compressive Strength
Curing time | Curing temperature | ||
+10 °C | +23 °C | +30 °C | |
1 day | − | ~24 N/mm2 | ~30 N/mm2 |
3 days | ~13 N/mm2 | ~28 N/mm2 | ~41 N/mm2 |
7 days | ~32 N/mm2 | ~39 N/mm2 | ~52 N/mm2 |
14 days | ~42 N/mm2 | ~49 N/mm2 | ~56 N/mm2 |
Compressive strength at 4 % elongation
Modulus of Elasticity in Compression
~ 3 250 N/mm2 (14 days at +23 °C) | (ASTM D 695-95) |
Flexural Strength
Curing time | Curing temperature | ||
+10 °C | +23 °C | +30 °C | |
1 day | − | ~29 N/mm2 | ~52 N/mm2 |
3 days | ~12 N/mm2 | ~48 N/mm2 | ~57 N/mm2 |
7 days | ~24 N/mm2 | ~50 N/mm2 | ~60 N/mm2 |
14 days | ~42 N/mm2 | ~56 N/mm2 | ~65 N/mm2 |
Modulus of Elasticity in Flexure
~ 3 600 N/mm2 (14 days at +23 °C) | (DIN EN ISO 178) |
Tensile Strength
Curing time | Curing temperature | ||
+10 °C | +23 °C | +30 °C | |
1 day | − | ~16 N/mm2 | ~24 N/mm2 |
3 days | − | ~25 N/mm2 | ~30 N/mm2 |
7 days | ~20 N/mm2 | ~32 N/mm2 | ~33 N/mm2 |
14 days | ~25 N/mm2 | ~33 N/mm2 | ~34 N/mm2 |
Tensile Adhesion Strength
Curing time | Substrate | Curing temperature | Adhesion strength |
7 days | Concrete dry | +10 °C | > 3 N/mm2 * |
7 days | Concrete moist | +10 °C | > 3 N/mm2 * |
1 day | Steel | +10 °C | ~8 N/mm2 |
3 days | Steel | +10 °C | ~12 N/mm2 |
3 days | Steel | +23 °C | ~13 N/mm2 |
3 days | Steel | +30 °C | ~15 N/mm2 |
*100% concrete failure
Shrinkage
Hardens without shrinkage.
Coefficient of Thermal Expansion
8.2 × 10−5 1/K (Temperature range +23 °C − +60 °C) | (EN 1770) |
Heat Deflection Temperature
Curing time | Curing temperature | HDT |
7 days | +23 °C | +46 °C |
(thickness 10 mm)
Application
Mixing Ratio
Component A : component B = 2 : 1 by weight or volume
Layer Thickness
~ 1 mm max.
Sag Flow
On vertical surfaces it is non-sag up to ~ 1 mm thickness. | (EN 1799) |
Product Temperature
Sikadur®-32 Normal must be applied at 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.
Pot Life
Temperature | Potlife* | Open time |
+10 °C | ~ 145 minutes | – |
+23 °C | ~ 55 minutes | ~ 120 minutes |
+30 °C | ~ 35 minutes | ~ 60 minutes |
*200 g
The potlife begins when the resin and hardener are mixed. It is shorter at high temperatures and longer at low temperatures. The greater the quantity mixed, the shorter the potlife. 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
The consumption of Sikadur®-32 Normal is ~ 1.3 kg/m2 per mm of thickness.
SUBSTRATE QUALITY
- Hardened mortar and concrete must be older than 28 days (depending on any minimal strength requirements).
- Verify the substrate strength by testing (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 to a condition similar to Sa 2.5.
- The substrate must be sound and all loose or friable particles must be removed.
SUBSTRATE PREPARATION
Concrete, mortar, stone and brick
Concrete and other hardened mineral substrates must be prepared by suitable means such as high pressure water jetting and / or blast cleaning, in order to obtain surfaces that are sound, clean, dry or mat damp (no standing water) and free from any cement laitance, ice, grease, oils, old coatings or other surface treatments. Any loose or friable particles must also be removed to achieve a contaminant free and open textured surface.
Steel
Steel surfaces must be cleaned and prepared thoroughly to the acceptable quality standard equivalent to Sa 2.5 i.e. normally by blast cleaning and then removing any dust by 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. 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 potlife.
CLEANING OF TOOLS
Clean all tools and application equipment with Sika® Thinner C immediately after use. Hardened / cured material can only be mechanically removed.