Sikadur®-31 SBA Normal Set

High-modulus, high-strength, moisture tolerant, epoxy paste adhesive

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Sikadur®-31 SBA Normal 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 VI 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. A:B=2:1 by volume
Color-coded components to ensure proper mixing control

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Product Data Sheet Show all documents

Usage

Structural bonding of post-tensioned precast concrete bridge segments
Sealing joints between concrete segments
For use in segment-by-segment 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. A:B=2:1 by volume
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 NS 40–60 °F

(4–15 °C)

SBA NS 55–95 °F

(13–35 °C)

SBA NS 80–115 °F

(27–46 °C)

24 hours

2,000 psi

(13.8 MPa)

2,000 psi

(13.8 MPa)

2,000 psi

(13.8 MPa)

48 hours

6,000 psi

(41.3 MPa)

6,000 psi

(41.3 MPa)

6,000 psi

(41.3 MPa)

Tensile Adhesion Strength

Bond Strength

Hardened Concrete to Hardened Concrete

2 day (moist cure)

1,000 psi, minimum

(6.9 MPa)

Heat Deflection Temperature

ASTM C-881 Spec.

SBA NS 40–60 °F

(4–15 °C)

SBA NS 55–95 °F

(13–35 °C)

SBA NS 80–115 °F

(27–46 °C)

> 120 °F

(49 °C)

> 120 °F

(49 °C)

> 120 °F

(49 °C)

> 120 °F

(49 °C)

Application

Application Information

Mixing Ratio

Product name	Temperature Range	Mix Ratio
Normal Set (40–60 °F, 4–15 °C)	40–60 °F (4–15 °C)	2:1, A:B by volume
Normal Set (55–95 °F, 13–35 °C)	55–95 °F (13–35 °C)	2:1, A:B by volume
Normal Set (80–115 °F, 27–46 °C)	80–115 °F (27–46 °C)	2:1, A:B by volume

Pot Life

SBA NS 40–60 °F

(4–15 °C)

SBA NS 55–95 °F

(13–35 °C)

SBA NS 80–115 °F

(27–46 °C)

~60 min

Open Time

SBA NS 40–60 °F

(4–15 °C)

SBA NS 55–95 °F

(13–35 °C)

SBA NS 80–115 °F

(27–46 °C)

1 h
1000 psi

(6.9 MPa)

1 h
1000 psi

(6.9 MPa)

1 h
1000 psi

(6.9 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.