Boral Blue Circle Concrete Mix

Boral Blue Circle Concrete Mix is a proportioned blend of dry aggregate, graded sands, and cement suitable for all general-purpose concrete applications where quality concrete is required. Designed for both professional tradespeople and home handypersons, it features high cement content for enhanced strength, durability, workability, and good finishing properties. This versatile mix is perfect for smaller concreting jobs and can be strengthened for structural use by adding 1-1.5kg of neat cement per 20kg bag, achieving approximately 32 MPa under normal conditions.

Key features include high cement content for superior performance, easy workability, and compatibility for various residential and landscaping needs. Available in convenient packaging options such as 20kg plastic-lined multi-walled paper sacks and 10kg plastic bags, it suits projects of any scale from garden paths to footings.

Technical specifications highlight its reliable performance:

• Compressive Strength: 25 MPa at 7 days, 20 MPa at 28 days.
• Setting Time: Protect from moisture loss as soon as surface is firm; cure for a minimum of 7 days using plastic sheeting or damp hessian.
• Yield: One 20kg bag covers 1.1m² at 10mm depth; 108 x 20kg bags yield 1 cubic metre of mixed concrete.

For optimal results, follow recommended mixing instructions:

• Use a wheelbarrow with a hoe, shovel, or mechanical mixer.
• Add about 75% of the water (approximately 2 litres per 20kg bag total) to the vessel, then slowly add the bag contents.
• Gradually add remaining water for a workable mix; avoid over-watering for stronger concrete.
• Place on a compacted, lightly soaked base; screed and finish promptly.
• Clean tools with water immediately after use.

Store in a cool, dry place off the ground; seal unused material to prevent hydration from air and moisture—dispose of products older than 12 months. Safety precautions are essential: Avoid dust generation and inhalation with P2 masks in well-ventilated areas; use goggles, gloves, and barrier creams; wash off skin contact immediately. Contains Respirable Crystalline Silica and trace hexavalent chromium; refer to the Safety Data Sheet for full details. When cutting or abrading hardened concrete, keep wet to minimize dust.

Choose Boral Blue Circle Concrete Mix for durable, easy-to-use concrete solutions in your next project, backed by Australia’s trusted leader in construction materials.