Instagram SCAB_one: tedx: Paved roads are nice to look at, but...


  1. tedx:

    Paved roads are nice to look at, but they’re easily damaged and costly to repair. UV rays, weather, oxidation and constant traffic wear down paved surfaces, loosening rocks and creating dangerous potholes.

    But are there better alternatives for paving roads than traditional asphalt? At TEDxDelft, civil engineer Erik Schlangen says yes. Here he demonstrates a new type of porous asphalt with an astonishing feature: When cracked, it can be “healed” by induction heating.

    This “self-healing” asphalt is infused with tiny strands of steel wool (yes, that steel wool — the same used to scrub dishes), which clings to the binding of the asphalt, called bitumen. When Schlangen’s asphalt develops a crack, caretakers can use heat to melt the steel mixed in the bitumen, which then liquifies and flows into the road’s cracks, “healing” itself.

    Onstage, Erik demonstrates this process by dropping a piece of his asphalt into liquid nitrogen, breaking it, and then heating it in a microwave to “heal it,” a process from which the asphalt reemerges fully formed. Out on the roadways, he and his team from the Delft University of Technology are working on a real piece of highway donated by the Dutch government, 400 meters of the A58, where they’ve discovered that this process really works, as Erik says in his talk:

    “If we go on the road every four years with our healing machine — this is the big version we have made to go on the real road — if we go on the road every four years, we can double the surface life of this road, which of course saves a lot of money.”

    Erik is also working with microbiologist Henk Jonkers to create a “self-healing” building concrete (pictured above, on bottom), which is infused with bacterial spores and a compound that feeds these spores — calcium lactate. “When the biomaterial is exposed to water (one of the many things known to contribute to the degradation of concrete),” says io9, “the bacteria set to work converting calcium lactate into calcite, which fills in surrounding cracks.”

    We can’t wait to see what comes of these exciting new building materials, and until then, we’re crossing our fingers for self-healing smartphone screens.

    (Bio-concrete photo via io9)

    they should sustitute paved roads for that spongy stuffy they use at fancy playgrounds…you know, for clumsy folk like me =)

     
  1. beccar0ni reblogged this from ramblingsbyjx
  2. mrcshls reblogged this from tedx
  3. ifspeechissilversilenceisgolden reblogged this from scab-one
  4. redefine-reawake likes this
  5. 1freespirit reblogged this from tedx and added:
    Seriously needed in Utah
  6. pinglol likes this
  7. schildneckt likes this
  8. inspirethereal reblogged this from tedx and added:
    Dutch Government has enough foresight...try something that might turn out
  9. alex-dicembre likes this
  10. equestrianshaming likes this
  11. tiffanyanns reblogged this from tedx
  12. leapoffaith likes this
  13. ramintatankas likes this
  14. invisibleesees likes this
  15. alexrudloff likes this
  16. the-road-of-happiness reblogged this from tedx
  17. dotblotforgetmenot likes this
  18. quirx likes this
  19. unbricolage reblogged this from tedx and added:
    Erbil needs to look into this.
  20. caesars-storm likes this
  21. chowmander likes this
  22. silentpainter reblogged this from tedx
  23. sarcasticnerd reblogged this from tedx
  24. aboveaveragethought reblogged this from tedx
  25. serendipity255 likes this
  26. mollierodriguez likes this
  27. ohmamamaya likes this
  28. megalopsycha reblogged this from tedx
  29. scab-one reblogged this from tedx and added:
    they should sustitute paved roads for that spongy stuffy they use at fancy playgrounds…you know, for clumsy folk like me...
  30. scab-one likes this
  31. ramblingsbyjx reblogged this from tedx
  32. hypocritopolis reblogged this from tedx
  33. magicoftheforest likes this
  34. leftclickloot reblogged this from tedx
  35. mind-what-matters reblogged this from tedx
  36. leftclickloot likes this
  37. mind-what-matters likes this
  38. sheezarealjoker likes this
  39. nothingbutanswers reblogged this from tedx
  40. nothingbutanswers likes this
  41. mzqingwa likes this
  42. noel87sc likes this
  43. rangeenchara likes this
  44. gloamingviolet likes this
  45. chibigoatess reblogged this from tedx
  46. mynormalapproachisuselesshere reblogged this from tedx
  47. laviesupernova likes this
  48. archcm likes this
  49. wastedalchemist likes this
  50. uv-catastrophe likes this