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Sikadur®-31 SBA (h) S-02

SEGMENTAL BRIDGE ADHESIVE FOR USE AT +25 °C TO +45 °C

Sikadur®-31 SBA (h) S-02 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 and hardens without shrinkage. Application temperature range +25 °C to +45 °C.

  • Follows International and National Standards (FIP, ASTM, AASHTO, etc.)
  • Follows the requirements of 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
  • No primer required
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Usage

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

Advantages

  • Follows International and National Standards (FIP, ASTM, AASHTO, etc.)
  • Follows the requirements of 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
  • No primer required

Packaging

6 kg (A+B) Prebatched units

12 kg (A+B) Prebatched units

Part A: 4 kg container

Part B: 2 kg container

Part A: 8 kg container

Part B: 4 kg container

Colour

Part A

White

Part B

Black

Part A+B

Concrete Grey

Product Details

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. Protect from direct sun exposure.

Density

Mixed resin ~1,80 ±0,1 kg/l
Part A+B mixed. Density value at +27 °C.

 
Technical Information

Compressive Strength

Curing

time

Curing

temperature

Compressive

strength

24 hours

+25 °C

> 60 N/mm²

7 days

+25 °C

> 75 N/mm²

Modulus of Elasticity in Compression

~10 000 N/mm2 (Instantaneous Modulus)

(FIP 5.13)

Tensile Adhesion Strength

100 % Concrete failure

(FIP 5.5)

(FIP 5.14)

Shear Strength

Temperature

Shear strength

+25 °C

>12 N/mm2

Shrinkage

Hardens without shrinkage

~0.13 % after 7 days

(FIP 5.7)

Creep

Deferred modulus in

compression (1 h)

~10 000 N/mm2

Deferred modulus in

shear (1 h)

~3 500 N/mm2

Temperature Resistance

Follows the requirements of FIP 5.10 and ASTM D648.

Heat Deflection Temperature

Curing conditions

HDT

7 days / +25 °C

> 50 °C

Water Absorption

Water absorption

Solvability

< 0,5 %

< 0,1 %

Application

Application Information

Mixing Ratio

Part A : Part B = 2 : 1 (by weight)

Layer Thickness

30 mm max.

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

Sag Flow

Flow at 9.5 mm

Requirements: Flow at minimum thickness of 3mm

(ASTM D2730)
(FIP 5.3)

Squeezability

Squeeze loadSqueeze area
15 kg

> 4000 mm2

Product Temperature

+5 °C min. / +30 °C max.

Ambient Air Temperature

+25 °C min. / +45 °C max.

Dew Point

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

Substrate Temperature

+25 °C min. / +45 °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

+20 °C

> 50 min
+25 °C~50 min
+30 °C~30 min
+35 °C~20 min
+40 °C~15 min

Note: 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

TemperatureOpen Time

+30 °C

> 60 min

+35 °C

~50 min

+40 °C~45 min

Curing Rate

Time

Compressive Strength

12 hours

≥ 40 N/mm2

24 hours

≥ 60 N/mm2
7 days≥ 75 N/mm2

All values at +30 °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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