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Decorative Concrete: Understanding Potential Variations

Outwest Concrete has transformed concrete into a medium that not only serves its utilitarian purpose but also adds sophistication and aesthetic appeal. However, despite rigorous quality control measures and adherence to industry standards, there are various factors that can influence the appearance and performance of decorative concrete. Understanding these variables is essential for successful project outcomes.

Variation of Aggregate

Decorative Concrete relies on natural aggregates like stone and sand for its visual appeal. These materials, extracted from the earth's crust, exhibit inherent variations in colour and texture due to geological forces. While quarry operators classify aggregates based on visual appearance, long-term colour consistency cannot be guaranteed. For extended projects, it's advisable to discuss aggregate sourcing with Outwest Concrete beforehand.

Iron Stone

Iron minerals present in aggregates can oxidise upon exposure to moisture and air, resulting in staining known as "iron stone." This natural phenomenon may impact the appearance of decorative concrete. Outwest Concrete provides guidance on treating iron stone stains, emphasising the importance of proper handling and awareness.

Decorative Concrete & Pumping

Decorative concrete, particularly those with exposed aggregate or polished finishes, may prioritise visual appearance over pumpability. Factors such as pump type, condition, and line specifications can affect concrete conveyance. Outwest Concrete encourages open communication regarding pumpability concerns prior to supply, stressing the importance of collaboration between suppliers and contractors.

Weather, Site Conditions & Workmanship

On-site factors such as weather conditions and workmanship significantly influence the final appearance and performance of decorative concrete. Temperature, humidity, and placement methods can all impact colour, finish, and durability. Outwest Concrete highlights the importance of engaging experienced contractors who can effectively manage these variables.


While concrete cracking is undesirable, it is a natural occurrence influenced by various factors, including weather and mix composition. Outwest Concrete provides guidelines for minimising cracking, such as applying surface treatments to prevent rapid drying. However, they acknowledge that some cracking is inevitable and outside their control.

Representation in Media

Images and samples provided by Outwest Concrete serve as initial references but may not perfectly reflect the finished product. Factors like monitor settings and reproduction processes can alter colour and texture representations. For a more accurate depiction, customers are encouraged to visit display centres.

Environmental Considerations

Proper disposal of wash water used in surface treatment processes is crucial to protect public infrastructure and the environment. Outwest Concrete emphasises responsible waste management practices to prevent contamination of drainage systems and waterways.

In summary, while decorative concrete offers unparalleled aesthetic possibilities, achieving consistency and quality requires collaboration, attention to detail, and environmental responsibility from all stakeholders involved in its production and placement. Outwest Concrete provides comprehensive guidance to address potential challenges, ensuring the successful realisation of decorative concrete projects.

Concrete Colour and Curing Disclaimer

Concrete colour can vary due to natural differences in raw materials and environmental factors like temperature, humidity, mixing, and finishing techniques. These variations are normal and should not be viewed as defects. Proper curing is essential for achieving desired concrete strength and durability. Recommended curing methods include keeping the surface moist, using curing compounds, or covering with wet blankets. Inadequate curing can lead to cracking, reduced strength, and compromised durability. Always adhere to manufacturer guidelines and industry best practices for the best results.

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