Friday, July 9, 2021

Helping solve the Heat Island Effect in cities

 https://www.independent.co.uk/climate-change/heatwave-us-cities-asphalt-spray-b1879912.html?utm_source=reddit.com

 

Pavement Technology, Inc has spent nearly a decade creating a titanium dioxide-based treatment, dubbed a “road rejuvenator.” (Its official name is A.R.A.-1 Ti but is known as Plus Ti).

Asphalt is the residue of distilled crude oil bound with coarser substances such as crushed rock, sand or gravel. Of America’s 2.6 million miles of paved roads, more than 94 per cent are surfaced with asphalt.

All asphalt has two molecular structures in common - maltenes which more or less “glues” the road together and asphaltenes which give the road its black colour and firmness. Over time, maltenes break down, causing the road to crack and become brittle. A.R.A.-1 Ti works by replacing maltenes to give asphalt back its original pep. 

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DEFINITELY! something worth working on.  Black absorbs sunlight energy, white disperses it.

 

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