Boral Blue Circle Oxide Green is an iron oxide pigment used to add green shades to concrete, mortar, grout, or render. The pigment becomes firmly integrated into the cement, offering excellent weather and alkaline resistance. It is also environmentally friendly and economical to use. Colours can be adjusted by changing the amount of oxide added based on the cement content, not the total aggregate.
Recommended starting point: 5% oxide by weight of cement (not total mix). For darker shades, increase oxide content up to a maximum of 10% by weight of cement. Adding more than 10% will not intensify the colour. To lighten the shade, reduce the amount of oxide. Always test a small batch first to confirm the final colour before large-scale use.
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