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 ")

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.

Boeing Creates Lightest Metal Ever
'A metal that was apparently as light as cork and stronger than steel...' - Edgar Rice Burroughs, 1929.

Light Molecules (And Maybe Light Sabers, Someday)
'It will be matter, matter made of light...'- John W. Campbell, 1930.


  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

Solowheel Xtreme Heinlein Tumblebug Video
'The cadets 'stood to horse' alongside their poised tumblebugs...'

Algorithm Predicts Marriage Success (HAL 9000 Will See You Now)
'I can tell from your voice harmonics, Dave, that you're badly upset....'

Denmark Island Earth (Verdenskortet ala Ringworld)
'They wanted to keep something of what they were losing...'

Humai Startup To Implant Your Brain In Robot Body
'The astounded onlookers saw a human brain snugly encased in a transparent skull-shaped receptacle.'

Blue Origin Reusable Rocket's Vertical Landing
We're getting there, one launch at a time.

X125 Snake-Arm Inspection Robot Video
'... long, flexible, glittering tentacles...'

Super-Thin Smart Glazing Displays
'...a wide sheet of clear material suddenly flared with light and swirling color.'

Have Scientists Found A Parallel Universe Leaking Into Ours
'Ellis had found a weak point, a shimmer, at which another continuum completely had been visible.'

Active Wellness Smart Car Seat
'Maybe the car was right...'

Tech Tats Prototype Sfnal Devices
'...Permanently fixed in the centre of his forehead.'

ANNABELL AI Can Learn English From Scratch
'...Could understand not only classic programming but also Loglan and English..."

Tesla Suit Gives Haptic Hugs
'Then a pressure on the lips...'

Surgically Implantable Artificial Kidney Starts Testing
'George Walt... proved the workability of wholly mechanical organs...'

Self-Filling Water Bottle Is Beetle-Based
'That moisture trickles down...'

Senate Passes Space Mining Legislation
'The law of filing on newly discovered asteroids was definite...'

Microsoft's Surface Book Is Part Clipboard
'Floyd sometimes wondered if the Newspad, and the fantastic technology behind it, was the last word in man's quest for perfect communications...'

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.