Product Data Sheet Show all documents

Sikadur®-32 LP

Epoxy structural bonding agent for use at high temperatures

Sikadur®-32 LP is a 2-part, epoxy based structural bonding agent for use at high temperatures. It is moisture tolerant and can bond wet or dry materials to damp or dry substrates.

  • Application temperature range +20 °C to +40 °C
  • Thickness up to 1 mm
  • Easy to mix and apply
  • Suitable for dry and damp concrete substrates
  • Very good adhesion to many construction materials
  • Hardens without shrinkage
  • Different coloured parts (for mixing control)
  • No primer needed
  • High initial and ultimate mechanical strengths
  • Impermeable to liquids and water vapour
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Product Data Sheet Show all documents

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

  • Application temperature range +20 °C to +40 °C
  • Thickness up to 1 mm
  • Easy to mix and apply
  • Suitable for dry and damp concrete substrates
  • Very good adhesion to many construction materials
  • Hardens without shrinkage
  • Different coloured parts (for mixing control)
  • No primer needed
  • High initial and ultimate mechanical strengths
  • Impermeable to liquids and water vapour

Packaging

Parts A+B

5 kg ready to mix unit

Pallets of 390 units (450 kg)

Parts A+B

1,2 kg ready to mix unit

Box of 6 units (7,2 kg)

Refer to current price list for packaging variations

Colour

Part A

white

Part B

dark grey

Parts A+B mixed

concrete grey

Product Details

Sustainability / Certifications / Approvals

SUSTAINABILITY

  • Conformity with LEED v4 MRc 4 (Option 2): Building Product Disclosure and Optimization - Material Ingredients
  • Conformity with LEED v2009 IEQc 4.1: Low-Emitting Materials - Adhesives and Sealants

CERTIFICATES AND TEST REPORTS

  • CE Marking and Declaration of Performance to EN 1504-4 - Structural bonding
Product Information

Product declaration

EN 1504-4: Structural bonding

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

Mixed resin ~1,4 ± 0,1 kg/l

Value at +23 °C.
Technical Information

Compressive strength

Curing time

Curing temperature

+23 °C

+30 °C

+40 °C

1 day−~2 N/mm2~30 N/mm2
3 days~14 N/mm2~24 N/mm2~41 N/mm2
7 days~34 N/mm2~38 N/mm2~52 N/mm2
14 days~39 N/mm2~43 N/mm2~56  N/mm2

 Compressive strength at 4 % elongation

Modulus of elasticity in compression

~2100 N/mm2 (14 days at +23 °C)

(ASTM D 695-95)

Flexural-strength

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 timeSubstrate

Curing

temperature

Adhesion strength

7 days

Concrete dry

+23 °C

> 3 N/mm2 *

7 days

Concrete moist

+23 °C

> 3 N/mm2 *

1 daySteel+23 °C~8 N/mm2
3 daysSteel+23 °C~12 N/mm2
3 daysSteel+30 °C~13 N/mm2
3 daysSteel+40 °C~15 N/mm2

*100% concrete failure

Shrinkage

Hardens without shrinkage.

Coefficient of thermal expansion

11,4 × 10−5 1/K

(EN 1770)

(linear expansion between +23 °C and +60 °C)

Heat deflection temperature

Curing time

Curing

temperature

HDT

7 days+23 °C+49 °C

(thickness 10 mm)

Application

Application Information

Mixing ratio

Part A : Part B = 2 : 1 by weight or volume

Layer thickness

~1 mm max.

Sag flow

Non-sag up to 1,0 mm thickness on vertical surfaces

(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

Cementitious substrates must be dry or matt damp (no standing water).
Brush the adhesive well into the substrate if matt damp.

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

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.
Application steps

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) 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 EQUIPMENT

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

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