3 Awesome Construction Material Innovations | The B1M

3 Awesome Construction Material Innovations | The B1M

Numerous innovations in technology are fast-advancing
the world of construction materials, bringing new products to market that could make a big
difference to our built environment. Here, we take a look at three of the most impressive
developments. Whilst cement is one of the most widely used
materials in construction for its strength and durability properties, it can crack when
exposed to water or chemicals over time, undermining structures. A research team at the University of Bath
in the UK are now developing a form of “self-healing concrete” by adding mirco-capsules to mixes
that contain calcite-precipitating bacteria. When water enters cracks in the concrete,
these bacteria germinate to produce limestone, filling the cracks and preventing any steel
reinforcement from corroding due to prolonged exposure. If scaled and applied effectively, this self-healing
solution could extend the life of concrete structures and reduce maintenance costs. Kinetic paving is a new concept that harvests
the energy from the footsteps of pedestrians moving around a building or a public space
and converts that energy into electricity. A UK-based start-up called Pavegen have developed
the energy-harvesting paving slabs made almost entirely from recycled tyres. The slabs flex
5mm when stepped on, generating 8 watts of kinetic energy. Each tile has its own wireless transmitter
that uses 1% of its power to store and send data on its performance to a central database. The tiles can be installed on a permanent
basis or temporarily at events. They were used on a main through-fare in the
London 2012 Olympic Park, on a portion of the Paris Marathon and under a football pitch
in Rio de Janeiro, powering the floodlights. The key to success with this technology is
of course traffic volume. Pavegen estimated some 12 million steps fell onto their tiles
during the London 2012 games, generating 20 kilowatt hours of electricity. In a nutshell 4D printing refers to 3D printed
objects that have the ability to reshape or self-assemble over time. Now we recognise
that’s quite a complicated “nutshell” to get your head around so here’s a bit
more detail. 4D printing was born out of the Self-Assembly
Lab established by Skylar Tibbits at the Massachusetts Institute of Technology or MIT. It was a concept
he developed alongside Stratasys and Autodesk. It involves strategically positioning rigid
and expandable materials next to each other within one 3D printed component. When the
expandable materials come into contact with water, they grow to up to 200% of their original
volume, changing their shape and effectively repositioning the rigid materials either side of them. The expandable materials effectively create
joints in the component that are activated in certain conditions, causing the entire
component to adopt a different form. Depending on the expandable material used, the contact
substance necessary for it to change shape could be water, or it could be heat, light
or a range of other simple energy inputs. Software enables components to be programmed
on-screen before they are printed and for that data to have effectively been programmed
into the component once it has been created. Going beyond this range of small-scale demonstration
pieces, it’s thought the technology could be used in some form of self-repairing water
pipes, in pipework that changes size in relation to water flow or in hot and cold temperature
water valves. Beyond plumbing it also has potential in medicine,
clothing and footwear that adapts to climatic conditions or in childcare products that respond
to temperature changes. If you enjoyed this video and would like to
get more from the definitive video channel for construction, subscribe to The B1M.

Comments (18)

  1. Great Informative and entertaining videos that look professional!

  2. So the energy harvesting pavement produced around £2.6 worth of electricity. Sounds like a brilliant investment. Energy harvesting people is a bad idea we are very inefficient, the US army looked at it years ago to power devices but found that carrying more batteries was lighter!

  3. You really cannot say that the slabs generate 8 W. Is this the peak power of one slab, the average power of a person walking over a walkway of slabs or the impulse of a person applying their weight to a slab. If it's the impulse and we assume that a person takes 0.1 seconds from 0 pressure to 100% of their body-weight on one foot, every step and therefore less then every slab generates 0.8 J per step, which is a ridiculously small amount of energy.
    I honestly think that the only place this system is remotely viable would be extremely high traffic areas like a subway -station, which brings its own set of problems, like cleaning those rubber pads and maintenance. And many subways around the world does not allow for flammable materials underground, the smoke from burning rubber could quickly kill 100s in a confined space.

  4. The electricity generating pavements sounds useless unless you're using it for something other than electricity generation. 20 kWh is nothing. That's like $3 worth of electricity. The only thing I can see that possibly being used for is data collection about foot traffic patterns or something like that.

  5. 2:55
    TLDR: the fourth dimension is time. that product is neat, but it is not 4d, the same way my dinner was not 4d now that its being digested into feces. time had an effect on both, why use a buzzword for one and not the other? ("Patent Pending: 4d sewage. it reacts to heat, pressure AND time by emitting sulfur, methane and CO2 and many other resources one can utilize in the field & on site! invest now!")
    the sales method here bears resemblance to the methods employed by "As Seen On TV" products: make an exciting claim that purposefully misrepresents the product and reap the rewards the rubes lay at your feet. its not illegal, but its shady and lazy

  6. Why the hell are we not putting kinetic pavement on the roads?

  7. It's hard to keep up with everything that's happening. Thank you.

  8. The paving idea was my idea since I learned about energy transformation from one form to another and now it comes to reality!! Good thing!! No matter who made it possible, but it’s a reality and helping people!!

  9. The 4D material makes me believe that Batman’s suit is going to be real too))

  10. Stop referring to things as 4D when they aren't actually four-dimensional!

  11. I am so glad I have come across your channel! Thanks for such informative videos about construction!

  12. If they take energy from human footsteps, doesn't walking then require more work as it would on any soft surface?

  13. I would like to see the regenerating concrete utilised in a brutalist building.

  14. Can I work for you?

  15. New material and even it was found in sea water or under water material

  16. Thanks so much for this expository video.

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