Sikadur®-32 LP IN
Epoxy based structural bonding agent for use at high temperatures
Sikadur®-32 LP IN is a solvent free, two-component, epoxy based structural bonding agent with long pot life for use at high temperatures. It is moisture tolerant and can bond wet or dry materials to damp or dry substrates. Complies with ASTM C 881-78 Type II, Grade 2 Class B+C.
- Easy to mix and apply
- Solvent free
- Very good adhesion to many construction materials
- Suitable for dry and damp concrete substrates
- Workable at low temperatures
- High initial and ultimate mechanical strengths
- Longer pot life
- Thickness up to 1 mm
- Impermeable to liquids and water vapour
- Hardens without shrinkage
- Different coloured parts (for mixing control)
- No primer needed
Usage
As a structural bonding agent and adhesive for:- Concrete elements (including bonding fresh to hardened concrete)
- Hard natural stone
- Ceramics, fibre-cement
- Mortar, bricks, masonry, render
- Steel, iron, aluminium
- Wood
- Polyester / fibreglass and epoxy resin materials
- Glass
Advantages
- Easy to mix and apply
- Solvent free
- Very good adhesion to many construction materials
- Suitable for dry and damp concrete substrates
- Workable at low temperatures
- High initial and ultimate mechanical strengths
- Longer pot life
- Thickness up to 1 mm
- Impermeable to liquids and water vapour
- Hardens without shrinkage
- Different coloured parts (for mixing control)
- No primer needed
Packaging
Part A+B pre-batched | 30 kg |
Part A | 20 kg container |
Part B | 10 kg container |
Part A+B pre-batched | 6 kg |
Part A | 4 kg container |
Part B | 2 kg container |
Colour
Part A+B mixed | concrete grey |
Part A | white |
Part B | dark grey |
Product Details
Product declaration
ASTM C881-78, Type II, Grade 2, Class B+C
Chemical base
Epoxy resin and selected fillers
Shelf life
12 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 +40 °C. Protect from direct sunshine.
Density
~1.70 kg/L (Part A+B mixed, at +27 °C) | (EN ISO 2811-1) |
Viscosity
≤ 5 m·Pa·s | (Brookefield viscometer) |
Compressive strength
Curing time | Compressive strength |
3 d | ≥ 35 MPa |
7 d | ≥ 55 MPa |
All values at curing temperature +30 °C
Tensile strength
≥ 18 MPa (14 days / +30 °C) | (ASTM D638) |
Tensile adhesion strength
≥ 10 MPa (14 days, moist cure / +30 °C) | (ASTM C882) |
Application
Mixing ratio
Part A : Part B = 2 : 1 (by weight)
Ambient air temperature
+5 °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
+5 °C min. / +40 °C max.
Substrate moisture content
Cementitious substrates must be dry or matt damp (no standing water).
Brush the adhesive well into the substrate if matt damp.
Pot life
> 4 hours at +30 °C | (FIP 5.1) |
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 parts A+B before mixing them (not below +5 °C).
Open time
> 7 hours at +30 °C | (FIP 5.2) |
Consumption
~0.3–0.5 kg/m2
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
Concrete / masonry / mortar / stone
Concrete and mortar must be at least 3–6 weeks old.
Substrate surfaces must be sound, clean, dry or matt damp. Free from standing water, ice, dirt, oil, grease, coatings, laitance, efflorescence, old surface treatments, all loose particles and any other surface contaminants that could affect adhesion of the bonding agent.
Steel
Surfaces must be clean, dry, free from oil, grease, coatings, rust, scale, all loose particles and any other surface contaminants that could affect adhesion of the bonding agent.
Wood
Substrate surfaces must be sound, clean, dry and free from dirt, oil, grease, coatings, all loose particles and any other surface contaminants that could affect adhesion of the bonding agent.
Polyester / epoxy / ceramics / glass
Surfaces must be clean, dry, free from oil, grease and any other surface contaminants that could affect adhesion of the bonding agent.
SUBSTRATE PREPARATION
Concrete / masonry / mortar / stone
Substrates must be prepared mechanically using suitable abrasive blast cleaning, needle gunning, light scabbling, bush hammering, grinding or other suitable equipment to achieve an open textured gripping surface profile.
Steel
Surfaces must be prepared mechanically using suitable abrasive blast cleaning, grinding, rotating wire brush or other suitable equipment to achieve a bright metal finish with a surface profile to satisfy the necessary tensile adhesion strength requirement. Avoid dew point conditions before and during application.
Wood
Surfaces must be prepared by planing, sanding or other suitable equipment.
Polyester / epoxy
Surfaces must be prepared by abrading using suitable equipment.
Ceramics / glass
Surfaces must be prepared by abrading using suitable equipment. Do not apply to siliconised substrates.
All substrates
All dust and loose material must be completely removed from all substrate surfaces before application of the product by vacuum / dust removal equipment.
MIXING
Prior to mixing all parts, mix part A (resin) and part B (hardener) briefly using a mixing spindle attached to a slow speed electric mixer (max. 300 rpm). Add part B (hardener) to part A and mix parts A+B continuously for at least 3 minutes until a uniformly coloured smooth consistency mix has been achieved. To ensure thorough mixing, pour materials into a clean container and mix again for approximately 1 minute. Over mixing must be avoided to minimise air entrainment. Mix full units only. Mixing time for A+B = 4.0 minutes. Mix only the quantity which can be used within its pot life.
CLEANING OF TOOLS
Clean all tools and application equipment with Sika® Colma Cleaner or suitable solvent immediately after use. Hardened material can only be mechanically removed.