Sikadur 31 CF Normal - Epoxy Adhesive & Repair Mortar

2025-03-10T13:07:22+11:00

Vendor: Sika
Type:
Price: 175.00

Moisture Tolerant, High Strength Structural Epoxy Adhesive and Repair Mortar

Sikadur-31 CF Normal is a moisture-tolerant, thixotropic, structural 2-component adhesive and repair mortar based on epoxy resins and special fillers. Designed for use between +10 °C and +30 °C, this high-strength adhesive offers excellent adhesion to most construction materials and is non-sagging for vertical and overhead applications.

Uses:

As a structural adhesive and mortar for bonding:

Concrete elements

Hard natural stone

Ceramics, fiber cement

Mortar, Bricks, Masonry

Steel, Iron, Aluminium

Wood

Polyester, Epoxy

Glass

As a repair mortar and adhesive for:

Corners and edges

Holes and void filling

Vertical and overhead use

For joint filling and crack sealing, including joint and crack arris/edge repair.

Characteristics / Advantages:

Easy to mix and apply

Very good adhesion to most construction materials

High strength adhesive

Thixotropic: non-sag in vertical and overhead applications

Hardens without shrinkage

Different coloured components (for mixing control)

No primer needed

High initial and ultimate mechanical strength

Good abrasion resistance

Impermeable to liquids and water vapour

Good chemical resistance

Approvals / Certificates:

Adhesive for structural bonding tested according to EN 1504-4, CE marked

AS/NZS 4020:2018 Potable Water Approved

Product Information:

Composition: Epoxy resin

Packaging: 6 kg (A+B), 30 kg (A+B) pre-batched units

Shelf life: 24 months from date of production

Storage conditions: Dry conditions, +5 °C to +30 °C, in original, unopened packaging, protected from direct sunlight

Colour: Component A (white), Component B (dark grey), Mixed (concrete grey)

Density (Mixed A+B at +23°C): 1.90 ± 0.1 kg/l (evacuated)

Application Information:

Mixing ratio (A:B by weight or volume): 2 : 1

Consumption: ~ 1.9 kg/m² per mm of thickness

Layer thickness: 2 mm min. / 30 mm max.

Sag flow: Non-sag up to 15 mm thickness on vertical surfaces

Material/Ambient air/Substrate temperature: +10 °C min. / +30 °C max.

Substrate moisture content: Dry or mat damp (no standing water)

Pot Life (200 g):

+10 °C: ~ 145 minutes

+23 °C: ~ 55 minutes

+30 °C: ~ 35 minutes

Application Instructions:

Substrate Quality: Concrete/mortar (>28 days), masonry, natural stone must be sound, clean, dry or mat damp, and free of contaminants. Steel should be de-rusted to Sa 2.5.

Substrate Preparation: Clean surfaces thoroughly by mechanical means (blast cleaning, etc.) to achieve a laitance and contaminant-free, open-textured surface.

Mixing: Mix pre-batched components A+B for at least 3 minutes with a slow-speed mixer until a uniform grey colour and smooth consistency are achieved. Avoid aeration. Re-mix in a clean container for another minute.

Application: Apply adhesive with a spatula, trowel, or notched trowel. For repair mortar, use formwork. Support bonded metal profiles on vertical surfaces for at least 12 hours. Check adhesion after hardening.

Cleaning of Equipment: Clean tools immediately with Sika Colma Cleaner. Cured material can only be removed mechanically.

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