Andrew Michler

New CO2 Sand Bricks are 2.5 Times Stronger than Concrete

by , 08/10/11

CO2 Sand Bricks, sand bricks, disaster relief materials, emergency construction materials, emergency shelters, eco materials, green materials, sustainable materials, new building materials, sand and building, TIS & Partners

Japanese construction and design firm TIS & Partners has just unveiled a strong and surprisingly low-tech brick that can be rapidly produced in disaster areas, and applied to the quick construction of long lasting shelter. Since the brick’s main component is common sand they can be produce in quantity nearly anywhere. The process of making the brick uses carbon dioxide to harden sand and a binder to provide tensile strength. In fact, the inventor claims the bricks are 2.5 times the tensile strength of concrete in one day, meaning that the construction of walls would need much less steel reinforcement and could be used immediately in emergency constructions.

CO2 Sand Bricks, sand bricks, disaster relief materials, emergency construction materials, emergency shelters, eco materials, green materials, sustainable materials, new building materials, sand and building, TIS & Partners

 

The bricks are created using a very simple process: high silicon content sand is put into an air tight mold that can be virtually any shape. CO2 is pumped into the mold and bonds with the silica to make a solid brick-like material in less than a minute — at this point, the brick is very strong under lateral loads, but still crumbles if stressed under tensile pressure.

The next step is to infuse the bricks with a binder such as epoxy or urethane. Bathing the blocks in the binder creates a hardened block that has all the proper requirements for a strong building component. The brick’s  strength is 2.5 times that of concrete in less than 24 hours, which is critical for emergency building and predicted to have a 50 year lifespan.

The finished bricks can also be more easily transported from where they are locally produce to the building site, and thanks to their tensile strength, they can create walls that require little or no added steel reinforcement. The product also has the promise of being a valuable way to sequester carbon.

+ TIS & Partners

Via Gizmodo and Diginfo TV

Related Posts

LEAVE A COMMENT

or your inhabitat account below

Let's make sure you're a real person:


5 Comments

  1. aviral sinhal January 1, 2014 at 6:51 am

    just need some more info about this…..!!!

  2. dpjp2006 March 24, 2012 at 8:42 am

    This is also very closely related to the process foundries utilize to produce (temporary) molds to cast metal into. Nothing new or necessarily even long term durability here. “The foolish man built his house upon the sand….” that says enough.

  3. Specwriter August 12, 2011 at 7:41 am

    Considering that concrete is weak in tension to begin with, having 2.5 times the tensile strength of concrete still doesn’t necessarily make it strong. Concrete’s compressive strength is what matters in most applications, and the article says nothing about the sand brick’s compressive strength relative to concrete.

  4. chrisw August 12, 2011 at 3:30 am

    Using epoxy or urethane is a bit of a beefy solution. Offcourse you can make a structure using such a material. But the overall durability and environmental impact is at question. The production cost of such a synthetic material is also quit high.
    How do you get such large quantities of epoxy in a disaster area? what do you do with it after its useful life?

  5. Marko August 11, 2011 at 4:09 am

    Cost of one brick $10?! Also, must be fun in a fire! Finally, the durability is also an issue with epoxies.

  • Read Inhabitat

  • Search Categories

  • Recent Posts

  • Recent Comments

  • Browse by Keyword

get the free Inhabitat newsletter

Submit this form
popular today
all time
most commented
more popular stories >
more popular stories >
more popular stories >
What are you looking for? (Solar, HVAC, etc.)
Where are you located?