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Current issue

ELEKTRO 5/2017 was released on May 11th 2017. Its digital version will be available on June 6th 2017.

Topic: Lightning and overvoltage protection; 23rd ELO SYS 2017

Main Article

Vibrations of rotary machines with magnetic bearings

SVĚTLO (Light) 2/2017 was released on March 17th 2017. Its digital version will be available immediately.

Fair and exhibitions
Inspired lighting from foreign fairs 

Accessories of lighting installations
On lighting operation is possible to save with minimum investments
Maxos fusion – new Philips Quit assembling system
Inteligent solution Dalisys® for control lighting

Concrete That Heals Itself

02.06.2015 | CleanTechnica | cleantechnica.com

Concrete and bacteria are not often seen as sharing the same construction armchair, that is, unless you happen to be discussing concrete that heals itself. Henk Jonkers from Netherlands-based Delft University of Technology has created bioconcrete, a product that can heal its own cracks and faults.

Jonkers says he originally began work on the bioconcrete when he was approached by a concrete technologist who wondered whether the safety of concrete could be improved using a biological solution.

It has taken Jonkers and his team three years to produce this self-healing prototype, needing to overcome the most obvious obstacle: finding bacteria that can survive the harsh environment of concrete.

“It’s a rock-like, stone-like material, very dry,” said Jonkers. To address this dry hardship, the team picked bacillus bacteria for its hardiness and longevity. The bacteria and its food source, calcium lactate, are packed into tiny capsules that dissolve when water enters the concrete cracks. Once released, the bacteria consume the calcium lactate, causing a chemical reaction that creates limestone, which then fills in the gaps.

Read more...cleantechnica.com

Image credit: European Patent Office

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