Sikadur®-31 SBA S-02 IN
Segmental bridge adhesive for use at +25 °C to +45 °C
Sikadur®-31 SBA S-02 IN is a 2-part epoxy based moisture tolerant, thixotropic, solvent-free, 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 +25 °C to +45 °C.
- Meets and / or exceeds International and National Standards (such as FIP, BS, ASTM etc.)
- Lubricates the surfaces and makes positioning of the shear keys easier
- High strength and high modulus of elasticity
Usage
Sikadur®-31 SBA S-02 IN is used as segmental bridge adhesive for use on substrate temperatures of +25 °C to +45 °C. Sikadur®-31 SBA S-02 IN in segmental bridge construction:
- Provides a watertight joint between segments
- Lubricates the surfaces
- Transfers the loading stresses between segments
Packaging
Part A+B prebatched unit | 6 kg × 2 sets |
| Part A | 4.50 kg container |
| Part B | 1.50 kg container |
Advantages
- Meets and / or exceeds International and National Standards (such as FIP, BS, ASTM etc.)
- 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
- Suitable for dry and damp concrete surfaces (moisture tolerant)
- Hardening is not affected by humidity
- Thixotropic: non-sag in vertical and overhead applications
- Solvent free
- Hardens without shrinkage
- Different coloured components (for mixing control)
- No primer needed
Colour
| Part A+B mixed | Concrete grey |
| Part A | Off white |
| Part B | Black |
Product Details
APPROVALS / STANDARDS
Test report on Sikadur®-31 SBA S-02 IN, Bureau Veritas (India) Pvt Ltd, February 2018
Product declaration
According to FIP / fib 9/2 Proposal for a standard for acceptance tests and verification of epoxy bonding agents for segmental construction
Chemical base
Epoxy resin and selected fillers
Shelf life
12 months from date of production
Storage conditions
The product must be stored properly in original, unopened and undamaged sealed packaging in dry conditions at temperatures between +5 °C and +40 °C. Protect from direct sunshine.
Density
| Part A+B mixed : (1.9 ± 0.1) kg/L (at +30 °C) | (EN ISO 2811-1) |
System structure
A full range of Sikadur®-31 SBA segmental bridge epoxy adhesives covering application temperatures between +10 °C and +50 °C is available:
| Application temperature | Segmental bridge epoxy adhesive |
| +20 °C to +50 °C | Sikadur®-31 SBA S-09 IN |
| +10 °C to +20 °C | Sikadur®-31 SBA S-04 IN |
| +15 °C to +35 °C | Sikadur®-31 SBA S-03 |
| +25 °C to +45 °C | Sikadur®-31 SBA S-02 IN |
Compressive strength
Curing time | Curing temperature | Compressive strength |
24 hours | +25 °C | ≥ 60 N/mm2 |
7 days | +25 °C | ≥ 75 N/mm2 |
~14 000 N/mm2 (Instantaneous modulus) | (FIP 5.13) |
| ≥ 12 N/mm2 (7 days / +25 °C) | (FIP 5.15) |
Tensile adhesion strength
| Bond strength on wet concrete | 100 % concrete failure (24 hours / +25 °C) |
| Tensile bending on wet concrete | 100 % concrete failure (24 hours / +25 °C) |
Creep
| Deferred modulus in compression (1 hour) | ~7500 N/mm2 |
Shrinkage
Hardens without shrinkage
| ≤ 0.4 % (7 days / +45 °C) | (FIP 5.7) |
Heat resistance
Meets the requirements of FIP 5.10, DIN 53458 and ASTM D648
≥ +50 °C (7 days / +45 °C) | (FIP 5.10) |
Heat deflection temperature
| ≥ +50 °C (7 days / +45 °C) | (ASTM D648) (DIN 53458) |
Water absorption
| Water absorption | ≤ 0.5 % |
| Solvability in water | ≤ 0.1 % |
Application
Mixing ratio
Part A : Part B = 3 : 1 (by weight)
Layer thickness
30 mm max.
Sag flow
| < 10 mm (+45 °C) | (FIP 5.3) |
| No sag flow at min. thickness of 3 mm (+45 °C) | (ASTM D2730) |
Squeezability
| Squeezing load | Surface area | Temperature |
| 15 kg | ≥ 3000 mm2 | +25 °C |
| 200 kg | ≥ 7500 mm2 | +25 °C |
Product temperature
Sikadur®-31 SBA S-02 IN must be at a temperature of between +25 °C and +45 °C for application.
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 moisture concrete, brush the adhesive well into substrate.
Pot life
| ~35 minutes (100 g mass at +45 °C) | (FIP 5.1) |
The potlife 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 potlife.
Open time
| ~65 minutes (100 g mass at +45 °C) | (FIP 5.2) |
Curing rate
| Curing time | Curing temperature | Compressive strength |
| 12 hours | +25 °C | ≥ 20 N/mm2 |
| 24 hours | +25 °C | ≥ 40 N/mm2 |
| 7 days | +25 °C | ≥ 75 N/mm2 |
SUBSTRATE QUALITY
Concrete must be at least 28 days old and have an open textured profile. Any cement laitance must 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 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 immediately after use. Hardened / cured material can only be mechanically removed.