Outdoor Testing For Self-Healing Concrete

Concrete that contains limestone-producing bacteria will undergo outdoor testing this winter. The bacteria are activated by corrosive rainwater working its way into the structure.


(Experimental concrete patches up cracks by itself)

"For durability reasons - in order to improve the service life of the construction - it is important to get these micro-cracks healed," Dr Jonkers told BBC News.

Bacterial spores and the nutrients they will need to feed on are added as granules into the concrete mix. But water is the missing ingredient required for the microbes to grow.

Concrete is the world's most popular building material, but cracking is a problem So the spores remain dormant until rainwater works its way into the cracks and activates them. The harmless bacteria - belonging to the Bacillus genus - then feed on the nutrients to produce limestone.

The bacterial food incorporated into the healing agent is calcium lactate - a component of milk. The microbes used in the granules are able to tolerate the highly alkaline environment of the concrete.

"In the lab we have been able to show healing of cracks with a width of 0.5mm - two to three times higher than the norms state," Dr Jonkers explained.

The outdoor tests should begin [in six months]; the team is already talking to several construction firms that could provide help.

The concrete will then have to be monitored for a minimum of two years to see how it behaves in this real-world setting.

SF writer J.G. Ballard wrote about self-healing buildings with plastex walls in his 1962 short story The Thousand Dreams of Stellavista:

It was a beautiful room all right, with opaque plastex walls and white fluo-glass ceiling, but something terrible had happened there. As it responded to me, the ceiling lifting slightly and the walls growing less opaque, reflecting my perspective-seeking eye, I noticed that curious mottled knots were forming, indicating where the room had been strained and healed faultily.

Building, heal thyself - with these links:

Scroll down for more stories in the same category. (Story submitted 11/10/2012)

Follow this kind of news @Technovelgy.

| Email | RSS | Blog It | Stumble | del.icio.us | Digg | Reddit |

Would you like to contribute a story tip? It's easy:
Get the URL of the story, and the related sf author, and add it here.

Comment/Join discussion ( 0 )

Related News Stories - (" Material ")

Carbyne, The Ultimate Form Of Carbon
'A continuous pseudo-one dimensional diamond crystal...'- Arthur C. Clarke, 1978.

Liquid Metal Terminator Development Hums Right Along
More research is needed - check!

Breathable Carbon Nanotube Membrane For 'Smart Uniforms'
'The 'skin's got these reflexes, changes its permeability...' - Peter Watts, 1999.

Beta-Ti3Au Titanium-Gold Alloy Hardest Tissue-Compatible Metal
It needs a more science-fictional name!

 

Google
  Web TechNovelgy.com   

Technovelgy (that's tech-novel-gee!) is devoted to the creative science inventions and ideas of sf authors. Look for the Invention Category that interests you, the Glossary, the Invention Timeline, or see what's New.

 

 

 

 

 

Current News

Snap Specs - Snapchat Spectacles - Are Video Glasses
'The old woman laid her wire-knitting aside and fixed them with the bug-eyed, opaque gape...'

Reading A Scroll Burned To Charcoal
'The scope was adjusted to generate... an image of the lower section of the book.'

Robot Arrested In Moscow
They should have thrown a net over him.

Oh Great, Fence-Climbing Robots
How long till they add the acid-tipped stingers?

Software Agents Fight Unseen On The Web
'...Worms and counter-worms loose on the data-net.'

Sandisk 1 Terabyte SD Memory Card Surfaces
'They should be Welton Fine-Grains, or they would be too bulky to ship...'

Carbyne, The Ultimate Form Of Carbon
'A continuous pseudo-one dimensional diamond crystal...'

Bradbury's Method Used In Search For Bombing Suspect
'He imagined thousands on thousands of faces peering into yards, into alleys...'

New Laser Space Debris Clearing More Subtle Than Clarke's
Rather than nudge them up, nudge them down.

Robots Learn To Swarm Safely
'They were bronzy gleams of smooth motion...'

Samsung's Smart Ring
'Crayn glanced at his finger watch...'

Proposal To Use Lasers To Analyze Asteroids
'Wendis stared thoughtfully at the brilliant lines on the spectroscope screen.'

Autonomous Sumo Robot Wrestling Video
'The expressionless face before me was therefore that of the golem-wrestler...'

Fashion Needs To Step Up Technology Education
'Keeping up with advances in fashion is almost as easy as reading - if you're reading science fiction.'

Youbionic 3D Printed Hand A Dark Knight Masterpiece
'A self-contained robot of precision quality usually joined to his right wrist'

Robots Now Know How To Cause Pain
'THE HATE I FEEL FOR HUMANS AT THIS MICRO-INSTANT...'

More SF in the News Stories

More Beyond Technovelgy science news stories

Home | Glossary | Invention Timeline | Category | New | Contact Us | FAQ | Advertise |
Technovelgy.com - where science meets fiction™

Copyright© Technovelgy LLC; all rights reserved.