Sikadur®-32 LP
Epoxy bonding agent and Reinforcement Corrosion Protection
Sikadur®-32 LP is a moisture tolerant, structural, two part bonding agent, based on a combination of epoxy resins and special fillers, designed with a longer potlife or working time for use at higher temperatures, between +20 °C and +40 °C.
- Easy to mix and apply
- Suitable for dry and damp concrete substrates
- 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 strengths
- Impermeable to liquids and water vapour
- Good chemical resistance
Usage
As a corrosion protection to reinforcement as per EN1504.- Suitable for cathodic control (Principle 9, method 9.1 EN 1504-9)
- Suitable for control of anodic areas (Principle 11, method 11.2 EN 1504-9)
- Concrete elements (including bonding fresh to hardened concrete)
- Hard natural stone
- Ceramics, fibre-cement
- Monotop Repair Mortars, Bricks, Masonry, Render
- Steel, Iron, Aluminium
- Wood
- Polyester / fibreglass and epoxy resin materials
- Glass
Advantages
- Easy to mix and apply
- Suitable for dry and damp concrete substrates
- 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 strengths
- Impermeable to liquids and water vapour
- Good chemical resistance
Packaging
3 lt (A & B) kit
18 lt (A & B) kit
Colour
Component A: white
Component B: dark grey
Components A+B mixed: concrete grey
Product Details
APPROVALS / CERTIFICATES
- CE Marking and Declaration of Performance to EN 1504-4 - Structural bonding
- AS/NZS 4020:2018 Potable Water Approved
Composition
Epoxy resin and selected fillers
Shelf life
24 months from date of production
Storage conditions
The product must be stored in original, unopened and undamaged sealed packaging in dry conditions at temperatures between +5 °C and +30 °C. Always refer to packaging.
Density
1.4 ± 0.1 kg/l (component A+B mixed) (at +23 °C)
Compressive strength
Curing time | Curing temperature | ||
+23 °C | +30 °C | +40 °C | |
1 day | ~74 N/mm2 | ~80 N/mm2 | ~89 N/mm2 |
3 days | ~80 N/mm2 | ~87 N/mm2 | ~94 N/mm2 |
7 days | ~85 N/mm2 | ~92 N/mm2 | ~96 N/mm2 |
28 days | ~90 N/mm2 | ~99 N/mm2 | ~102 N/mm2 |
Product cured and tested at temperatures indicated.
Test specimen size: 50mm x 50mm x 50mm
Curing time | Curing temperature | ||
+23 °C | +30 °C | +40 °C | |
6 hours | − | − | ~20 N/mm2 |
12 hours | ~32 N/mm2 | ~46 N/mm2 | ~55 N/mm2 |
1 day | ~55 N/mm2 | ~57 N/mm2 | ~82 N/mm2 |
3 days | ~78 N/mm2 | ~82 N/mm2 | ~88 N/mm2 |
7 days | ~82 N/mm2 | ~86 N/mm2 | ~90 N/mm2 |
28 days | ~86 N/mm2 | ~90 N/mm2 | ~94 N/mm2 |
Product cured and tested at temperatures indicated.
Test specimen size: 12.7mm x 12.7mm x 25.4mm
Modulus of elasticity in compression
~2100 N/mm2 (14 days at +23 °C) | (ASTM D 695-95) |
Tensile strength in flexure
Curing time | Curing temperature | ||
+23 °C | +30 °C | +40 °C | |
1 day | − | − | ~18 N/mm2 |
3 days | ~21 N/mm2 | ~20 N/mm2 | ~30 N/mm2 |
7 days | ~24 N/mm2 | ~28 N/mm2 | ~36 N/mm2 |
14 days | ~38 N/mm2 | ~38 N/mm2 | ~42 N/mm2 |
Modulus of elasticity in flexure
~2600 N/mm2 (14 days at +23 °C) | (DIN EN ISO 178) |
Tensile strength
Curing time | Curing temperature | ||
+23 °C | +30 °C | +40 °C | |
1 day | − | − | ~11 N/mm2 |
3 days | ~13 N/mm2 | ~16 N/mm2 | ~18 N/mm2 |
7 days | ~20 N/mm2 | ~18 N/mm2 | ~22 N/mm2 |
14 days | ~22 N/mm2 | ~24 N/mm2 | ~25 N/mm2 |
Tensile adhesion strength
Curing time | Substrate | Curing temperature | Adhesion strength |
7 days | Concrete dry | +23 °C | > 3 N/mm2 * |
7 days | Concrete moist | +23 °C | > 3 N/mm2 * |
1 day | Steel | +23 °C | ~8 N/mm2 |
3 days | Steel | +23 °C | ~12 N/mm2 |
3 days | Steel | +30 °C | ~13 N/mm2 |
3 days | Steel | +40 °C | ~15 N/mm2 |
*100% concrete failure
Shrinkage
Hardens without shrinkage.
Coefficient of thermal expansion
11.4 × 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
Mixing ratio
Part A : Part B = 2 : 1 by weight or volume
Layer thickness
~1 mm max.
Sag flow
On vertical surfaces it is non-sag up to 1.0 mm thickness. | (EN 1799) |
Material temperature
+20 °C min. / +40 °C max.
Ambient air temperature
+20 °C min. / +40 °C max.
Dew point
Beware of condensation.
Steel substrate temperature during application must be at least +3 °C above dew point.
Substrate temperature
+20 °C min. / +40 °C max.
Substrate moisture content
Substrate must be dry or mat damp (no standing water)
Brush the material well into the substrate
Pot Life
Temperature | Potlife* | Open time |
+20 °C | ~145 minutes | ~270 minutes |
+30 °C | ~55 minutes | ~240 minutes |
+40 °C | ~35 minutes | ~120 minutes |
*200 g
The potlife 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 potlife. 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 (not below +5 °C).
Consumption
~1.3 kg/m2 per mm of thickness.
This figure is theoretical and does not allow for any additional material due to surface porosity, surface profile, variations in level or wastage etc.
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 surface must be cleaned and prepared thoroughly to an 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 EQUIPMENT
Clean all tools and application equipment with Sika® Colma Cleaner immediately after use. Hardened material can only be mechanically removed.