Product Data Sheet Safety Data Sheet Show all documents
Sikadur®-31 SBA Slow Set

Sikadur®-31 SBA Slow Set

HIGH MODULUS AND HIGH STRENGTH, SOLVENT-FREE AND MOISTURE TOLERANT, STRUCTURAL EPOXY RESIN PASTE ADHESIVE

Sikadur®-31 SBA Slow Set is a unique, two-component epoxy resin based, structural adhesive. It is moisture tolerant during application and curing and provides high-modulus and high strength properties once cured. The material is specifically formulated as an adhesive paste, available in temperature grades to accommodate differing site conditions and construction requirements. The Sikadur®-31 SBA group of adhesives has a proven track record and is widely used in bonding hardened concrete to hardened concrete in the erection of segmental bridges and precast elements, amongst other applications.

  • Easy to apply, non-sag paste for vertical applications.
  • Convenient and easy to mix ratio. A:B=2:1 by volume.
  • Excellent adhesion to concrete, steel, timber and most construction materials.
  • Moisture tolerant before, during and after cure.
  • Supplied in 2 temperature governed grades to meet project requirements.
    Grade 13-24 (+13 °C to +24 °C [55 °F - 75 °F])
    Grade 21-32 (+21 °C to +32 °C [70 °F - 90 °F])
  • Sikadur®-31 SBA Slow Set Cold Weather is available for cold weather conditions [-6 °C to +7 °C (21 to 45 °F)].
  • High-modulus, high-strength, structural adhesion.
  • Conformance to ASTM C881, Type VI requirements and ASBI guidelines.
  • Product qualified by The Road Authority (TRA).
Product Data Sheet Safety Data Sheet Show all documents

Usage

  • Structural bonding of precast, post-tensioned concrete bridge segments.
  • Sealing of joints between concrete sections in segment-by-segment erection.
  • Sealing of joints between concrete sections in span-by-span erection.
  • Structural bonding of building components including steel and timber sections.
 

Advantages

  • Easy to apply, non-sag paste for vertical applications.
  • Convenient and easy to mix ratio. A:B=2:1 by volume.
  • Excellent adhesion to concrete, steel, timber and most construction materials.
  • Moisture tolerant before, during and after cure.
  • Supplied in 2 temperature governed grades to meet project requirements.
    Grade 13-24 (+13 °C to +24 °C [55 °F - 75 °F])
    Grade 21-32 (+21 °C to +32 °C [70 °F - 90 °F])
  • Sikadur®-31 SBA Slow Set Cold Weather is available for cold weather conditions [-6 °C to +7 °C (21 to 45 °F)].
  • High-modulus, high-strength, structural adhesion.
  • Conformance to ASTM C881, Type VI requirements and ASBI guidelines.
  • Product qualified by The Road Authority (TRA).

Packaging

11.4 L (3 US gal.) units consisting of:

Component A (Resin) 7.6 L (2 US gal.)
Component B (Hardener) 3.8 L (1 US gal.)

Colour

Concrete grey

Product Details

Product Information

Shelf Life

2 years in original, unopened containers.

Storage Conditions

Store in cool dry location at temperatures between +4 °C and +35 °C (40 °F and 95 °F). Condition material at temperatures between +21 °C and +24 °C (70 °F and 75 °F) before using.

Consistency

Non-sag paste
Technical Information

Compressive Strength

Grade 13-24
at +13 °C (55 °F)		Grade 21-32
at +21 °C (70 °F)

36 h

27.5 MPa

(4000 psi)

58.6 MPa

(8500 psi)

72 h

48.2 MPa

(7000 psi)

65.5 MPa

(9500 psi)

Heat Deflection Temperature

Grade 13-24

Grade 21-32

+51 °C (124 °F)

+51 °C (124 °F)

Application

Application Information

Mixing Ratio

A : B = 2 : 1 by volume

Pot Life

Grade 13-24
at +24 °C (75 °F)

Grade 21-32
at +32 °C (90 °F)

2 h

2 h

Open Time

Grade 13-24
at +24 °C (75 °F)

Grade 21-32
at +32 °C (90 °F)

6 h

6 h
Consumption

Consumption

Approximately 1 m2/L (12 ft2/ US gal.) at 1 mm thickness
Application steps

SUBSTRATE PREPARATION

All surfaces must be clean and sound. They may be dry or damp, but must be free of standing water and frost. Best results are achieved when the substrate is dry. Remove all dust, dirt, laitance, grease, curing compounds, impregnations, waxes, foreign products, disintegrated, loose and friable materials and any other contaminants.

MIXING

Pre-stir each component to ensure even consistencies and colours. Empty all of Component B (hardener) into the pail containing Component A and thoroughly mix at low speed (400 - 600 rpm) the combined components for a minimum of three (3) minutes, using a drill fitted with a Jiffy-style mixing paddle, until a uniform grey colour is achieved. During the mixing operation, scrape down the sides and bottom of the mixing pail with a flat or straight edge tool at least once, to ensure no unmixed epoxy remains and a consistent grey colour is produced before applying.

Mix only that quantity which can be used within its pot life.

CLEAN UP

Clean all tools and equipment immediately with Sika® Epoxy Cleaner. Once hardened, the material can only be removed mechanically. 

 

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