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Current issue

ELEKTRO 10/2016 was released on September 27th 2016. Its digital version will be available on October 27th 2016.


Topic: 22nd International trade fair ELO SYS 2016; Electrical Power Engineering; RES; Emergency Power Units


Main Article

Power system management under utilization of Smart Grid system

Printed edition of SVĚTLO (Light) 5/2016 was released on September 19th 2016. Its digital version will be available immediately.


Standards, regulations and recommendations

Regulation No 10/2016 (Prague building code) from the view of building lighting technology


Lighting installations

PROLICHT CZECH – supplier of lighting for new SAP offices

Hold up the light to see in work your work

Modern and saving LED lifting of swimming pool hall

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