Boral Blue Circle Off White Cement

Boral Blue Circle Off White Cement is a high-performance, special purpose Portland cement designed for applications requiring a lighter colour than traditional grey cement. Exceeding the requirements of Australian Standard AS 3972 for Type GP cement, it is produced from specially manufactured light-coloured clinker, offering a unique off-white shade midway between grey and white cements. This product delivers reliable results in residential, commercial, and decorative projects where enhanced aesthetics are desired.

Key features include controlled colour consistency (lightness 68-72), high early strength characteristics, and compatibility with admixtures compliant to AS 1478.1, other AS 3972-compliant cements, or fly ash per AS 3582.1 for customized properties. Note that it offers poor resistance to sulfate attack and is not suitable for environments prone to chemical exposure. Available in convenient packaging options such as 20kg bags, bulk bags, or bulk cement, it suits projects of any scale from DIY decorative work to large-scale architectural finishes.

Technical specifications highlight its exceptional performance:

• Compressive Strength: Achieves 32-40 MPa at 3 days, 42-52 MPa at 7 days (minimum 35 MPa required), and 55-67 MPa at 28 days (minimum 45 MPa required).
• Setting Time: Initial set in 1-2 hours (minimum 45 minutes), final set in 2-3.5 hours (maximum 6 hours).
• Soundness: 1.0 mm (maximum 5.0 mm allowed).
• Fineness: 320-420 m²/kg.

For optimal results, follow recommended mix designs:

• General mortar (M3): 1 part cement, 6 parts sand, 1 part hydrated lime.
• Severe exposure mortar (M4): 1 part cement, 4.5 parts sand, 0.5 parts hydrated lime.
• General rendering: 1 part cement, 4 parts sand, 0.5 parts hydrated lime.
• General use concrete: 1 part cement, 2.5 parts sand, 4 parts stone/gravel.
• Higher strength concrete: 1 part cement, 2 parts sand, 3 parts stone/gravel.

Store in a cool, dry environment off the ground with free air circulation to prevent moisture exposure, which can reduce shelf life—test products older than 3 months or dispose if conditions are not ideal. Safety precautions are essential: Avoid dust inhalation with P2 masks, use gloves and goggles, and wash off skin contact immediately. Contains trace Respirable Crystalline Silica and hexavalent chromium; refer to the Safety Data Sheet for full details.

Choose Boral Blue Circle Off White Cement for durable, high-strength, and visually appealing outcomes in your next project, backed by Australia’s trusted leader in construction materials.