Product Data Sheet
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Sikadur®-31 SBA S-02 MY

Segmental Bridge Adhesive

Sikadur®-31 SBA S-02 MY is a solvent-free, thixotropic, epoxy resin based, structural two part adhesive specially formulated for segmental bridge construction. Suitable for use in hot and tropical climatic conditions.

  • Easy to mix and apply
  • Good adhesion to most construction materials
  • Thixotropic: non-sag in vertical and overhead applications
  • Hardens without shrinkage
  • Different coloured components (for mixing control)
  • No primer needed
  • Abrasion resistant
  • Impermeable to liquids and water vapour
  • Chemical resistant
  • Lubricates the surfaces and makes location of the shear keys easier
  • High strength and high modulus of elasticity
  • High initial and ultimate strengths
  • Impermeable to liquids and water vapour
  • Minimal water absorption
  • Suitable for dry and damp concrete surfaces (moisture tolerant)
  • Hardening is not affected by humidity
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Product Data Sheet
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Usage

Segmental bridge adhesive for use on substrates at +30 °C to +50 °C.  

Advantages

  • Easy to mix and apply
  • Good adhesion to most construction materials
  • Thixotropic: non-sag in vertical and overhead applications
  • Hardens without shrinkage
  • Different coloured components (for mixing control)
  • No primer needed
  • Abrasion resistant
  • Impermeable to liquids and water vapour
  • Chemical resistant
  • Lubricates the surfaces and makes location of the shear keys easier
  • High strength and high modulus of elasticity
  • High initial and ultimate strengths
  • Impermeable to liquids and water vapour
  • Minimal water absorption
  • Suitable for dry and damp concrete surfaces (moisture tolerant)
  • Hardening is not affected by humidity

Packaging

  • 6 kg (A+B) Pre-batched unit
  • 12 kg (A+B) Pre-batched unit

Colour

Part A

White

Part B

Dark grey

Part A+B mixed

Concrete grey

Product Details

Product Information

Composition

Epoxy resin

Shelf Life

24 months from date of production

Storage Conditions

Stored properly in original unopened, sealed and undamaged packaging, in dry conditions at temperatures between +10 °C and +30 °C. Protect from direct sun, heat and moisture.

Density

2.0 + 0.1 kg/l (part A+B mixed) (at +23 °C) (evacuated)
Technical Information

Compressive Strength

1 day

~75 N/mm²

7 days

~87 N/mm²

Modulus of Elasticity in Compression

Instantaneous Modulus in Compression

~8 860 N/mm²

Deferred Modulus in Compresion (1 hour creep)

~7 930 N/mm²

Tensile Strength in Flexure

100 % concrete failure

(FIP/9/2, Clause 5.14)

Modulus of Elasticity in Shear

Instataneous Shear Modulus

~2 200 N/mm²

Deferred Shear Modulus

~1 700 N/mm²

Shear Adhesion

1 day

~27 N/mm²

7 days

~37 N/mm²

Shrinkage

~0.017 %

(FIP/9/2:1978, Clause 5.7)

Heat Deflection Temperature

~55.4 °C

(FIP/9/2:1978, CLause 5.10)

Application

Application Information

Mixing Ratio

Part A : Part B = 3 : 1 by weight or volume

Layer Thickness

20 mm max.

When using multiple units, one after the other. Do not mix the following unit until the previous one has been used in order to avoid a reduction in handling time.

Sag Flow

~9.5 mm thickness non sagging

(FIP/9/2:1978, Clause 5.3)

Squeezability

Squeezing Load

Squeezability Area

0.15 kN

~5 205 mm²

2.00 kN

~7 629 mm²

4.00 kN

~11 029 mm²

Product Temperature

+20 °C min. / +50 °C max.

Ambient Air Temperature

+30 °C min. / +50 °C max.

Dew Point

Beware of condensation!

Substrate temperature during application must be at least 3 °C above dew point.

Substrate Temperature

+20 °C min. / +50 °C max.

Pot Life

~59 min.

(FIP/9/2:1978, Clause 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.

Open Time

> 75 min.

(FIP/9/2 March 1978, Clause 5.2 and 5.14)
Consumption

Consumption

~2.0 kg/m² per mm of thickness
Application steps

SUBSTRATE QUALITY

Mortar and concrete must be older than 28 (depends on minimal requirement of strengths). Verify the substrate strength (concrete, masonry, natural stone). The substrate surface (all types) must be clean, dry and free from contaminants such as dirt, oil, grease, existing surface treatments and coatings etc. Steel substrates must be de-rusted similar to Sa 2.5. The substrate must be sound and all loose particles must be removed.

SUBSTRATE PREPARATION

Concrete, mortar, stone, bricks
Substrates must be sound, dry, clean and free from laitance, ice, standing water, grease, oils, old surface treatments or coatings and all loose or friable particles must be removed to achieve a laitance and contaminant free, open textured surface.

Steel
Must be cleaned and prepared thoroughly to an acceptable quality i.e. by blast cleaning and vacuum. Avoid dew point conditions.

MIXING

Mix parts A+B together for at least 3 minutes with a mixing spindle attached to a slow speed electric drill (~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 ~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® Colma Cleaner immediately after use. Hardened or cured material can only be mechanically removed.

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