Product Data Sheet
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Sikadur®-31 SBA S-08

Sikadur®-31 SBA S-08

Segmental bridge adhesive for use at +40 °C to +60 °C

Sikadur®-31 SBA S-08 is a 2-part epoxy based moisture tolerant, thixotropic, structural adhesive especially formulated for segmental bridge construction. It has good squeezability, high initial strength gain, hardens without shrinkage and complies with many international and national standards such as FIP, ASTM etc.  Application temperature range +40 °C to +60 °C.

  • Meets and / or exceeds International and National Standards (FIP, BS, ASTM etc.)
  • Complies with both ASTM C-881 and AASHTO M-235 for Type VI
  • Lubricates the surfaces and makes positioning 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
  • Thixotropic: non-sag in vertical and overhead applications
  • Hardens without shrinkage
  • Different coloured components (for mixing control)
  • No primer needed
Product Data Sheet
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Usage

  • Provides a watertight joint between segments
  • Lubricates the surfaces
  • Transfers the loading stresses between segments
 

Advantages

  • Meets and / or exceeds International and National Standards (FIP, BS, ASTM etc.)
  • Complies with both ASTM C-881 and AASHTO M-235 for Type VI
  • Lubricates the surfaces and makes positioning 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
  • Thixotropic: non-sag in vertical and overhead applications
  • Hardens without shrinkage
  • Different coloured components (for mixing control)
  • No primer needed

Packaging

Parts A+B: 5 kg  

Pre-batched unit

Pallets of 80 units

Colour

Part A

White

Part B

Black

Part A+B mixed

Concrete grey

Product Details

Sustainability / Certifications / Approvals

APPROVALS / CERTIFICATES

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

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 ~1,80 ±0,1 kg/l

Density value at +20 °C.

Product Declaration

  • EN 1504-4: Structural bonding
  • Declaration according to FIP / fib 9/2 Proposal for a standard for acceptance tests and verification of epoxy bonding agents for segmental construction

FIP Performance / Characteristics

Requirements and Criteria

5.1 Pot Life

≥ 20 min at upper limit of temperature range

5.2 Open Time

≥ 60 min at upper limit of temperature range, concrete failure

5.3 Thixotropy

Non sagging at 3 mm thickness

5.4 Squeezability

with 15 kg load: ≥ 3 000 mm2

with 200 kg load: ≥ 7 500 mm2

with 400 kg load: ≥ 10 000 mm2

5.5 Bond strength on concrete

100 % concrete failure

5.6 Curing rate

Compressive strength

12 hours: ≥ 20 N/mm2
24 hours: ≥ 40 N/mm2
7 days:  ≥ 75 N/mm2

5.7 Shrinkage

≤ 0,4 % after 7 days

5.8 Creep

Deferred modulus in compression:

after 1 hour: ≥ 6000 N/mm2

Deferred modulus in shear:

after 1 hour: ≥ 1200 N/mm2

5.9 Water absorption

Water absorption ≤ 0,5 %

Solvability ≤ 0,1 %

5.10 Heat resistance

≥ 50 °C

5.11 Colour

Same as concrete

5.12 Compressive strength

At lower temperature limit

after 24 hours: ≥ 60 N/mm2
after 7 days: ≥ 75 N/mm2

5.13 E-Modulus Compressive

≥ 8000 N/mm2

5.14 Tensilebending

100 % concrete failure

5.15 Shear strength

≥ 12 N/mm2

5.16 E-Modulus Shear

≥ 1500 N/mm2
System information

System Structure

A full range of Sikadur®-31 SBA segmental bridge epoxy adhesives covering application temperatures between +5 °C and +60 °C are available:

Application Temperature

Segmental Bridge Adhesive

+40 °C to +60 °CSikadur®-31 SBA S-08
+30 °C to +45 °CSikadur®-31 SBA S-02

+20 °C to +35 °C

Sikadur®-31 SBA S-03

+10 °C to +25 °C

Sikadur®-31 SBA S-04

+5 °C to +10 °CSikadur®-31 SBA S-07
Technical Information

Compressive Strength

Curing time

Curing temperature

Compressive strength

24 hours

+25 °C

~60 N/mm2

24 hours

+30 °C

~65 N/mm2

24 hours

+35 °C

~70 N/mm2

24 hours

+40 °C

~75 N/mm2

24 hours

+45 °C

~78 N/mm2

24 hours

+50 °C

~80 N/mm2

24 hours

+55 °C

~90 N/mm2

Modulus of Elasticity in Compression

~12 000 N/mm2

(Instantaneous Modulus)

Tensile Adhesion Strength

Bond strength on dry concrete

100 % concrete failure

Bond strength on wet concrete

100 % concrete failure

  

Tensile bending on dry concrete

100 % concrete failure

Tensile bending on wet concrete

100 % concrete failure

Shear Strength

Temperature

Shear strength1

+40 °C

~17 N/mm2

+45 °C

~18 N/mm2

+50 °C~19 N/mm2
+55 °C~20 N/mm2

1 Slant shear cylinder test

Modulus of Elasticity in Shear

~4000 N/mm2

(Instantaneous Modulus)

Shrinkage

Hardens without shrinkage

~0,02 % (after 7 days)

(FIP 5.7)

Creep

Deferred modulus in compression (1 hour)

~11 500 N/mm2

Temperature Resistance

Meets the requirements of FIP 5.10, DIN 53458 and ASTM D648.
 

Curing Conditions

Heat Resistance

+35 °C

+55 °C

+55 °C

+82 °C

Heat Deflection Temperature

Curing conditions

HDT

7 days / +35 °C

+55 °C (Martens point)

7 days / +55 °C

+82 °C

Water Absorption

Water absorption

~0,41 %

Solvability

~ –0,04 %

Application

Application Information

Mixing Ratio

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

Layer Thickness

30 mm max.
 

Sag Flow

Flow at 9,5 mm

(ASTM D2730)

(EN 1799)

Up to 9 mm (Thixotropy)

(FIP 5.3)

Squeezability

Squeeze load

Squeeze area

15 kg

~5100 mm2

200 kg~7600 mm2

Product Temperature

+5 °C and +30 °C

Ambient Air Temperature

+40 °C min. / +60 °C max.

Dew Point

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

Substrate Temperature

+40 °C min. / +60 °C max.

Substrate Moisture Content

When applied to matt damp concrete brush the adhesive well into substrate.

Pot Life

Quantity: 1 litre (~1,8 kg)

Temperature

Pot Life

+35 °C~90 minutes
+55 °C~30 minutes

The pot life starts when the resin and hardener are mixed. It is shorter at high temperatures and longer at low temperatures. The larger the quantity mixed, the shorter the pot life.

Open Time

Temperature

Open time

+35 °C>90 minutes
+55 °C~60 minutes

Curing Rate

Time

Compressive Strength

12 hours

~60 MPa

24 hours

~75 MPa

7 days~85 MPa

All values at +35 °C
Application steps

SUBSTRATE QUALITY

Concrete must be at least 28 days old (and have an open textured profile. Any cement laitance shall be removed.

Concrete surfaces must be clean, dry or matt damp. Free from standing water, ice, dirt, oil, grease, laitance, surface treatments, all loose particles and any other surface contaminants that could affect adhesion of the adhesive.

SUBSTRATE PREPARATION

Concrete surfaces must be prepared mechanically using suitable abrasive blast cleaning or other suitable approved equipment to achieve an open textured, laitance free, gripping surface profile. All dust and loose material must be completely removed from surfaces before application of the adhesive.

 

MIXING

Prior to mixing all parts, mix part A (resin) briefly using a mixing spindle attached to a slow speed electric drill (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 can only be mechanically removed.

 

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