r/science • u/mvea Professor | Medicine • Nov 03 '19

Chemistry Scientists replaced 40 percent of cement with rice husk cinder, limestone crushing waste, and silica sand, giving concrete a rubber-like quality, six to nine times more crack-resistant than regular concrete. It self-seals, replaces cement with plentiful waste products, and should be cheaper to use.

https://newatlas.com/materials/rubbery-crack-resistant-cement/
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u/Needmeawhip Nov 03 '19

Could be usefull here in sweden where the roads look like they have been in an earthquake

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u/leno95 Nov 03 '19

Concrete as a road surface shouldn't be used in areas where there are extreme differences in temperatures in the first place.

Given Sweden regularly has warm summers and cold winters, it could be argued in some parts there's a difference of 50°c between hot and cold periods, which will definitely ruin the concrete.

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u/[deleted] Nov 03 '19 edited Nov 04 '19

In Southern Canada we get tempretures that swing between -40c in the winter and +40c in the summer. Concrete on structures is constantly being touched up and any roads made of it are often in pretty rough shape. Most of them are asphalt.

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u/[deleted] Nov 03 '19

Where the heck does it reach 40C in Canada?

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u/Whyisthereasnake Nov 03 '19

Ottawa in the summer.

Usually that number includes the humidity though.

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u/kurtis1 Nov 03 '19

Pretty much every province in Canada reaches 40c for a day or two every summer

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u/[deleted] Nov 03 '19

Southern Ontario had temps of +40C multiple times this last summer.

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u/[deleted] Nov 03 '19

Your moms bedroom

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u/C0lMustard Nov 03 '19

Valleys. The Ottawa valley for instance.

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u/[deleted] Nov 03 '19

Kelowna, BC and southern Ontario are places where I've experienced that temperature.

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u/secretburner Nov 03 '19

The Okenagan in BC, for one.