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 ")

Self-Adapting Composite Heals Itself
'...Could seal the punctures that grain-of-sand-sized meteors might make.' - Ramond Z. Gallun, 1951.

Strong Metal, Light Metal - Same Metal!
'A metal... light as cork and stronger than steel...' - Edgar Rice Burroughs, 1929.

New Glass Tough As Steel
'Windows of an artificial transparent element...'' - Olaf Stapledon, 1930.

Blackest Black? New Disordered Nanostructured Material
'Well, we have a black coating now thatís ninety-nine percent absorptive...' - Doc Smith, 1934.

 

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

Walmart Shopping Cart Robots Will Follow You
'...the machine would carry his bag in its soft plastic jaws...'

DoNotPay Lawyer Program Contests Parking Tickets
'I want my lawyer program.'

City Made Of Bone
'The cheapest building material known...'

SpotMini Robot Pierson's Puppeteer-Style
Now they're kind of cute, right?

Brick By Brick, Building Martian Bases
Don't try to boost everything from the surface of the Earth.

Elon Musk et. al. OpenAI Household Robot
'Any work a human being does around a house.'

BRUISE Smart Injury Detection Suit
'... Bee could see that three of them were disabled and two of them damaged.'

Tesla Model S Is Also A Boat (Sort Of)
'This Dick Dare contraption of yours...'

Promobot, The Runaway Russian Robot!
'Got yourself a runaway, Jack?'

Rowbot Small Autonomous Farm Robot
'...The tiny red glints of self-guided tractors.'

Amazon's Alexa To Recognize Emotions
Oh, Hal understood their emotions, all right.

Cool 'Single-Person Spaceships' Have Better SF Name
'A cabin so small, you couldn't stand up with the air lock closed..'

First Robot Suicide Has Science Fiction Roots
'What had happened to prevent my death?'

First US Clinical Trial For Wearable Artificial Kidney
'Wholly mechanical organs...'

Open Bionics To Produce Deus Ex Prosthetic Designs
Be a part of a science fictional future.

Human-Carrying Drone Taxi 184 Approved For Test Flights
'The cab was an egg-shaped bubble...'

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.