ALKACRETE 300

2-Component, Water-Based Cementitious Coating System.

AlkaCrete 300 is a durable, cement-based coating applied over existing concrete surfaces to restore or decorate driveways, patios, and pool surrounds. It offers a cost-effective alternative to replacement, providing slip-resistant, customizable, and hard-wearing surfaces in various colors and patterns. Common uses include resurfacing, stencil patterns, and epoxy flooring.

20L Kit for $000 including GST.

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Usage

Driveways paths
Pool areas
BBQ areas.
Car Parks
Concrete Floors
Domestic Floors
Exterior Use
Garages
House Interior
Interior Floors
Shopping Centres

Advantages

Environmentally friendly, VOC compliant, non-flammable, non-toxic and low odour.
Improves performance, appearance, and light reflectance of new or old concrete.
Rapidly increases concrete surface strength by up to 5 times.
Easy, one-step application.
Breathable and UV stable – will not yellow, discolour, peel or flake.
Treated surfaces return to service within a few hours.
Surface sheen improves with traffic and maintenance.

Packaging

20 Kg + 20 Litres modifier

Colour

– AlkaCement Colour Chart

Shelf life: 24 months

Storage conditions

Store away from direct sunlight and away from naked flames, sparks and heating.

Flash point >25 C

Density: 1.25 Kg/L

Drying time
2 to 4 hours

Consumption

It typically covers 5-15 square meters when sprayed as a decorative top coat.

APPLICATION INSTRUCTIONS

Application methods vary significantly depending on whether you are renewing a surface, building a structure, or sealing a slab.
1. Decorative Resurfacing (Spray-on Concrete)
This 4-day process uses a polymer-modified cementitious coating to “facelift” existing driveways or patios.

* Step 1: Preparation & Cleaning: Clean the surface thoroughly using a high-pressure washer (typically 4000 PSI+) or acid etching. Repair all cracks with epoxy fillers or “stitch-welding” to prevent them from showing through the new layer.
* Step 2: Priming & Base Coat: Apply a primer to ensure a strong bond, followed by a trowelled-on “base coat”. This layer establishes the “grout line” colour if using stencils.
* Step 3: Stencilling & Spraying: Lay out heavy-duty paper stencils (e.g., brick or tile patterns) over the dry base coat. Use a hopper gun and air compressor to spray the decorative “top coat”.
* Step 4: Finishing & Sealing: Remove stencils once touch-dry. After cleaning away loose particles, apply two coats of high-quality acrylic sealer to protect against UV fading and stains.

2. Structural Construction (Shotcrete)
Shotcrete involves projecting concrete at high velocity onto a surface, often reinforced with steel mesh.

* Dry Mix Method: Dry ingredients (cement and aggregate) are blown through a hose. Water is added manually by the operator at the nozzle just before impact. This offers precise control over water content but creates more dust.
* Wet Mix Method: Fully mixed wet concrete is pumped to the nozzle, where compressed air is introduced to propel it. This method is preferred for large-volume projects like tunnel linings because it is faster and generates less “rebound” (waste material that bounces off the wall).

3. Applying Sealers & Coatings (Industrial Sprayer)
For maintenance, industrial sprayers are used to apply protective chemicals or curing compounds.

* Technique: Hold the nozzle perpendicular to the surface and work in thin, overlapping layers to prevent pooling.
* Back-Rolling: Immediately follow the spray with a foam roller (the “spray and back roll” method) to ensure even penetration and eliminate bubbles.
* Conditions: Apply when temperatures are between 7 C and 30 C. Avoid windy or humid conditions, which can lead to sealer failure.

Material is applied in an even manner so as not to cause puddles and brush marks. Brush out any puddles that may have formed due to excess material or reduced absorptivity.