Product Data Sheet
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Sikadur®-31 SBA Slow Set

Segmental Bridge Adhesive High-modulus, high-strength, moisture tolerant, epoxy paste adhesive

Sikadur®-31 SBA Slow Set is a unique high-modulus 2- component, moisture-tolerant, solvent-free, epoxy resin system available in three application temperature ranges. A unique high-modulus, structural adhesive for bonding hardened concrete to hardened concrete for segmental bridge construction. The mixed material has the consistency of paste and is a concrete gray color. It conforms to the current ASTM C-881, Type VII requirements, and ASBI guidelines.

  • Moisture tolerant before, during and after cure
  • High-modulus, high-strength, structural paste adhesive
  • Range of curing times to meet assembly and strength gain requirements
  • Easy to apply, non-sag paste for vertical applications
  • Excellent adhesion to concrete, steel and most construction materials
  • Convenient easy to mix ratios
  • Color-coded components to ensure proper mixing control
Product Data Sheet
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Usage

  • Structural bonding of post-tensioned precast concrete bridge segments
  • Sealing joints between concrete segments
  • Slow-set version for span-by-span erection
  • Supplied in three temperature grades to meet project requirements. (For cold weather conditions, refer to separate technical data sheet on Sikadur® 31, SBA [20°-45°F].)
 

Advantages

  • Moisture tolerant before, during and after cure
  • High-modulus, high-strength, structural paste adhesive
  • Range of curing times to meet assembly and strength gain requirements
  • Easy to apply, non-sag paste for vertical applications
  • Excellent adhesion to concrete, steel and most construction materials
  • Convenient easy to mix ratios
  • Color-coded components to ensure proper mixing control

Packaging

3 gal. (11 L) units

Color

Concrete gray

Product Details

Product Information

Shelf Life

24 months in original, unopened containers

Storage Conditions

Store dry at 40–95 °F (4–35 °C).

Condition material to 70–75 °F (21–24 °C) before using.

Consistency

Non-sag paste
Technical Information

Compressive Strength

SBA SS 40–61 °F

(4–16 °C)

SBA SS 55–75 °F

(13–24 °C)

SBA SS 70–90 °F

(21–32 °C)

36 hours1,800 psi (tbd MPa)3,000 psi (20.7 MPa)6,400 psi (tbd MPa)
72 hours4,500 psi (31.0 MPa)6,500 psi (44.8 MPa)9,000 psi (62.1 MPa)

Slant Shear Strength

ASTM C-881 Spec.

SBA SS 40–61 °F

(4–16 °C)

SBA SS 55–75 °F

(13–24 °C)

SBA SS 70–90 °F

(21–32 °C)

1000 psi1800 psi2000 psi2300 psi

Heat Deflection Temperature

ASTM C881 Spec

SBA SS 40–61 °F

(4–16 °C)

SBA SS 55–75 °F

(13–24 °C)

SBA SS 70–90 °F

(21–32 °C)

> 120 °F

(49 °C)

> 122 °F

(50 °C)

> 124 °F

(51 °C)

> 124 °F

(51 °C)

Application

Application Information

Mixing Ratio

Product name

Temperature Range

Mix Ratio

Slow Set (40–61 °F, 4–16 °C)

40–61 °F (4–16 °C)

2:1, A:B by volume
Slow Set (55–75 °F, 13–24 °C)

55–75 °F (13–24 °C)

2:1, A:B by volume
Slow Set (70–90 °F, 21–32 °C)

70–90 °F (21–32 °C)

2:1, A:B by volume

Pot Life

ASTM C-881 Spec.

SBA SS 40–61 °F

(4–16 °C)

SBA SS 55–75 °F

(13–24 °C)

SBA SS 70–90 °F

(21–32 °C)

-~2 hours~2 hours~2 hours

Open Time

ASTM C-881 Spec.

SBA SS 40–61 °F

(4–16 °C)

SBA SS 55–75 °F

(13–24 °C)

SBA SS 70–90 °F

(21–32 °C)

14 days1,500 psi (10.3 MPa)2,500 psi (13.8 MPa)1,500 psi (10.3 MPa)
Consumption

Coverage

Approximately 12 ft2/gal. or 36 ft2./3 gal. unit
Application steps

SUBSTRATE PREPARATION

Surface must be clean and sound. It may be dry or damp, but free of standing water and frost. Remove dust, laitance, grease, curing compounds, impregnations, waxes, foreign particles, disintegrated materials and any other contaminants.

MIXING

Pre-mix each component. Wear chemical resistant gloves and safety goggles. Mix all of Part ‘A’ with all of Part ‘B’. Mix thoroughly for a minimum of 3 minutes with a low-speed (400–600 rpm) drill fitted with a mixing Sika paddle until a uniform gray color is achieved. Scrape down the sides of the mixing pail and ensure there are no streaks of unmixed epoxy before applying. Mix only that quantity which can be used within its pot life.

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