Sikadur®-31 IN Epoxy Adhesive

Tow Component Thixotropic Structural Epoxy Adhesive.

Product Overview

Sikadur®-31 IN is a solvent-free, moisture-tolerant, thixotropic, two-part structural adhesive and repair mortar based on epoxy resins and special fillers. It is designed for use at temperatures between +10°C and +40°C.

Product Description

Sikadur®-31 IN is a high-performance, solvent-free, two-component epoxy adhesive and repair mortar designed for structural bonding and repair applications. It offers excellent adhesion to a wide range of construction materials, including concrete, steel, wood, and ceramics. The product’s thixotropic nature ensures non-sag application on vertical and overhead surfaces, making it ideal for demanding construction environments.

This versatile adhesive is suitable for both dry and damp concrete surfaces and can be used without a primer. It hardens without shrinkage, ensuring long-term durability and structural integrity. Sikadur®-31 IN is also impervious to liquids and water vapor, providing effective sealing and protection against environmental factors.

Whether used for bonding structural elements, repairing cracks and joints, or filling voids, Sikadur®-31 IN delivers reliable performance and strength, meeting the rigorous demands of modern construction projects.

Key Features :

• Easy to mix and apply
• Suitable for dry and damp concrete surfaces
• Excellent adhesion to most construction materials
• High strength adhesive
• Thixotropic: non-sag and suitable for vertical and overhead applications
• Solvent-free
• Hardens without shrinkage
• Different colored components for mixing control
• No primer needed
• High initial and ultimate strengths
• Good abrasion and chemical resistance
• Adhesive and filler in one
• Impermeable to liquids and water vapor

Applications:

1. Structural adhesive for bonding:

• Concrete elements
• Hard natural stone
• Ceramics, fiber cement
• Mortar, bricks, blocks, masonry
• Steel, iron, aluminum
• Wood
• Polyester, epoxy
• Glass

2. Fast-setting repair mortar and adhesive for:

• Corners and edges
• Hole and void filling
• Joint arrises

3. Joint filling and crack sealing:

• Rigid joint filling
• Crack filling and sealing (non-moving)

Technical Data

• Mixing Ratio: Part A : Part B = 2 : 1 (by weight)
• Layer Thickness: Maximum 30 mm. For thicknesses >30 mm, apply in successive 30 mm layers or once the previous layer has hardened.
• Sag Flow: Non-sag up to 10 mm thickness on vertical surfaces (ASTM D 2730)
• Density (Mixed): 1.80 ± 0.1 kg/L at 30°C
• Pot Life: ≥ 40 minutes (100g mass at +30°C) (FIP 5.1)
• Consumption: ~2.0 kg/m² per mm of thickness. Actual consumption depends on substrate roughness and absorbency.

Mechanical Properties (at +30°C)

1. Compressive Strength:

• 1 day: ≥ 45 N/mm²
• 3 days: ≥ 50 N/mm²
• 7 days: ≥ 55 N/mm²
• 14 days: ≥ 60 N/mm²

2. Tensile Strength in Flexure:

• 1 day: ≥ 10 N/mm²
• 3 days: ≥ 15 N/mm²
• 7 days: ≥ 20 N/mm²
• 14 days: ≥ 25 N/mm²

3. Tensile Strength:

• 3 days: ≥ 5 N/mm²
• 7 days: ≥ 8 N/mm²

4. Tensile Adhesion Strength: ≥ 10 N/mm² (Concrete failure) (ASTM C 882)

5. Shrinkage: Hardens without shrinkage

Application Conditions

• Product Temperature: +10°C min. / +40°C max.
• Ambient Air Temperature: +10°C min. / +40°C max.
• Substrate Temperature: +10°C min. / +40°C max.
• Dew Point: Substrate temperature must be at least 3°C above dew point to avoid condensation.
• Substrate Moisture Content: Cementitious substrates must be dry or matt damp (no standing water).

Storage and Shelf Life

• Shelf Life: 12 months from the date of production
• Storage Conditions: Store in original unopened, sealed, and undamaged packaging in dry conditions at temperatures between +5°C and +40°C. Protect from direct sunlight.

Packaging

• Part A: 2 kg, 4 kg, 20 kg
• Part B: 1 kg, 2 kg, 10 kg
• Total Set: 3 kg, 6 kg, 30 kg

For more detailed information on this product, please contact our office. Thank you.