Bio Concrete, Concrete That Repairs Itself
Sure would save some tax payer money 
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26 
i guess its a type of coralline algae.
Looks like they only get enough food to fill in the cracks then it dies leaving behind it's calcium exoskeleton.
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3. ringmaster 171 days ago
#1, scientists specialise the bacteria on a certain 'nutrition' so it doesn't attack material and so forth weakens the construction, the 'cancer' stops when there's nothing left of its favourites...
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6. Comment rated too low. Show this comment wongraven 171 days ago
Very sceptical to this video !
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9. LightAng3l 171 days ago
What if there is a substance that makes the bacteria run wild... and my neighbor gets it's hands on it 
Must mount my defenses!
28
Was somebody holding a gun on him out of camera range? Seriously never seen a guy so tense, i bet if they had a piece of coal and shoved it up his....
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13. Spartan118 171 days ago
This really is genius but i have to agree with #1, until I see some long term tests im gonna be skeptical about using this so I i dont get house cancer 
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The bacteria used is sealed in pellets along with its "food" and mixed into the concrete mix.Only when tiny cracks form in the concrete – breaking open the pellets – and water seeps inside will the bacteria activate and begin to consume the food that has also been freed. As they feed, they combine the calcium with oxygen and carbon dioxide to form calcite – essentially pure limestone. It is more of a water sealant than a structual repair since limestone is not as hard as concrete,but it keeps water from entering surface cracks and damaging steel reinforcement in the structure. It also prevents water from entering cracks and then freezing in cold weather which causes much damage and spalling of the concrete.
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17. Sizzlik (admin) 171 days ago
#14 And what kind of super hero would you be? Mr. Concrete? Each crack gets re-inforced by bacteria until you can't move a limb anymore? Well..i rather stick to "the thing" from fantastic four then..
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The bacteria used is sealed in pellets along with its "food" and mixed into the concrete mix.Only when tiny cracks form in the concrete – breaking open the pellets – and water seeps inside will the bacteria activate and begin to consume the food that has also been freed. As they feed, they combine the calcium with oxygen and carbon dioxide to form calcite – essentially pure limestone. It is more of a water sealant than a structual repair since limestone is not as hard as concrete,but it keeps water from entering surface cracks and damaging steel reinforcement in the structure. It also prevents water from entering cracks and then freezing in cold weather which causes much damage and spalling of the concrete.
28
#16 Then i would be just a weird guy in a stupid suit who can't walk. Thank you for bursting my bubble 
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23. RandurSource 169 days ago
Great invention, no doubt there
but his speech about filling up cracks reminded me of this video:
http://www.snotr.com/video/221/CrackSpackle
2
I hope this concrete works better than the stuff they used in my new home. It was supposed to 'repair' itself when cracks or leaks developed......does not work.
http://www.youtube.com/watch?v=lvZ5ohaQMVY&list=UU_n5sWdkiGE5Z1KPEHm3zoQ&feature=plcp
23 
(115 votes)
+35
1. PAGINATACOM 171 days ago
What makes the bacteria grow only to fill the cracks ? Buildings will get cancer...