Hot, dry or windy conditions can often cause the bleed water on newly laid concrete to evaporate extremely quickly, making it difficult to judge the correct time to finish the surface.
Commencing the finishing process too early seals the surface of the concrete before all the bleed water has risen to the surface, which often results in small blisters of concrete peeling off during troweling operations.
Another problem can be the discolouration of the surface on coloured concrete as the bleed water brings deposits of calcium carbonate and other salts to the surface.
Protecting wet coloured concrete with an anti evaporate and curing coating, minimise cracking and ensures the maximum concrete strength and colour intensity is achieved.
Anti evaporates such as CCS Aliphatic Alcohol are suitable for use on both wet grey and decorative concrete. The dye that is used in the product is so you can see where it has been applied and will break down in 1-7 days.
Traditional curing methods can promote a patchy and blemished surface which can be more visible on a coloured concrete base.
Suggested methods for curing full depth coloured concrete include application of CCS Slab Clad R or application of CCS Same Day Sealer or use of used wet hessian kept consistently moist for 5 days.
CCS have a water based curing compound named CCS Slab Clad R, which is applied to freshly laid concrete. It is a Class Z film forming compound offering high water retention capabilities compliant to AS 3799-1998 Appendix B.
CCS Slab Clad R is based on a C-5 resin with performance enhancing additives that when applied to freshly laid concrete, leaves a dried transparent film on the surface. The product is designed to degrade over time, allowing for an unhindered application of other toppings and treatments. Unlike many resin based curing compounds, CCS Slab Clad R dries to form a tack-free film which resists dirt, dust and stains and is designed for use over coloured concrete.
When planning a project consider what sealer you are likely to use. Many sealers require a clean, dry surface free of contaminants so if you are considering a penetrative sealer for example, a curing compound must be removed prior to placement.
Please contact CCS if we can assist with providing a curing and sealing solution for your next project.