Boral Blue Circle Premium Clay

Boral Blue Circle Premium Clay is a super fine kaolin clay, also known as ball clay, renowned for its high plasticity, dry strength, and refractory properties. Sourced as a naturally occurring raw material, it serves as an effective plasticiser for building renders and mortars, enhancing workability while acting as a general-purpose filler. Note that colour can vary due to its natural origin, with no colour specification available—claims for variation post-use will not be considered.

Key features include exceptional chemical composition and physical properties for consistent performance. It is not a substitute for lime and should be used in minimal amounts to achieve desired workability and finish, as excessive clay may reduce bond, flexural/compressive strengths, shrinkage control, and durability. Available in convenient 15kg plastic-lined multi-walled paper sacks (80 bags per pallet), it suits both professional and DIY projects in residential and commercial settings.

Technical specifications highlight its quality:

• Chemical Composition (by X.R.F. analysis): SiO2 59.0%, Al2O3 25.4%, TiO2 1.4%, Fe2O3 1.1%, CaO <0.1%, MgO <1.0%, K2O 3.0%, Na2O <0.3%, L.O.I. 8.4%.
• Physical Properties: Moisture content <6%, particle size 99% passing 300μm, 98% passing 150μm, 97% passing 75μm.

For optimal results, follow recommended guidelines:

• Conduct trials on all mix designs to ensure compliance with Australian standards, particularly AS 3700 for masonry structures and mortar mixes.
• Boral does not specify exact mix designs due to sand variations; prioritize low clay content to avoid detrimental effects like poor strength or excessive shrinkage.
• Naturally occurring brickies sands may also impact results similarly.

Store in a cool, dry place to maintain quality—handle bags carefully to avoid damage. Safety precautions are essential: Avoid generating dust and inhalation with approved dust masks in ventilated areas; use goggles, rubber gloves, and barrier creams; wash off skin contact immediately to prevent irritation. Manual handling may cause injury—use mechanical aids or share loads. Contains naturally occurring materials; refer to the Safety Data Sheet for full details.

Choose Boral Blue Circle Premium Clay for enhanced plasticity and reliable filling in your next building project, backed by Australia’s trusted leader in construction materials.