Concrete

Do you want an easier way to meet industry environmental standards and your corporate sustainability targets in your next project?

Using concrete with Photocatalyst Coatings means having a building that’s durable, self-cleaning and actually helps to reduce the amount of air pollution.

Photocatalyst Coatings can be added to a durable building product, like concrete, to be used in a range of applications including:

  • Precast concrete walls, structures and claddings
  • Concrete pavers
  • Insitu-formed
  • GRC

When used on or in a concrete structure, photocatalysts technology actually protects the surface from fouling materials. Dirt, dust, road grime, oil and air-borne pollutants are actually broken down into oxygen, carbon dioxide, water, sulphate, nitrate and other molecules – all of which are either beneficial to, or have a relatively benign impact on the environment.

Using the power of the sun, concrete becomes self-cleaning and rain or easy rinsing will easily remove unwanted dirt and helps to keep your building structure looking newer for longer.

Images on right – Image 1 unsightly road barrier on the M4 Western Motorway, Image 2 ShenYang Fourth Ring Road traffic barriers coated with ecotio2®, Image 3 mould streaked concrete at T-way at the bust stop at Seven Hills Sydney, Image 4 Guangdong Shunde BT Highway coated with ecotio2®, Image 5 ecotio2® has been use to protect the precast and insitu concrete structure of the Northwest Rail skytrain.

Durable graffiti resistance on smooth off form concrete

Are you struggling to remove graffiti?

Graffiti is unsightly and can be expensive to clean. And if you’re in an area with ongoing problems, this can mean a significant drain on your resources.

By using ecotio2® on smooth (off form) concrete you can create a graffiti resistant surface, capable of self-cleaning with daylight (without tag removal).

How does this work?

The ecotio2® coating reduces the porosity of the concrete, which means graffiti paint cannot be absorbed into the surface and means any graffiti can be removed with a simple solvent wipe method.

Any traces of graffiti remaining after the solvent wipe cleaning process will break down and gradually self clean via oxidisation reactions.

And because ecotio2® doesn’t contain any organic or synthetic materials it won’t break down – making it durable even in the harsh Australian sun.

Concrete Anti-Carbonation

The affected depth from the concrete surface can be readily shown
by the use of phenolphthalein indicator solution.

The phenolphthalein indicator solution is applied to a fresh fracture surface of concrete. If the indicator turns purple, the pH is above 8.6. Where the solution remains colourless, the pH of the concrete is below 8.6, suggesting carbonation. Fully carbonated concrete has a pH of  8.4.

The ecotio2® coating system for concrete is inorganic. It seals the pores of the concrete to prevent the water ingress and the dissolving of carbon dioxide in the pore water.

The carbonation depth is approximately proportional to the square root of time. For example, if the carbonation depth is 1mm in a one-year-old concrete, it will be about 3mm after 9 years, 5mm after 25 years and 10mm after 100 years.

Images Right – Image 1 No penetration of carbonate. Image 2 Unprotected concrete showing depth of carbonation.

Do you want to know how Photocatalyst Coatings can be used on your next project?

Get in touch with the friendly team at Photocatalyst Coatings on 1300 326 846, or fill in our online form.