- Pack sand (right on the beach) into a cast of a stool.
- Then, pump a liquid mixture of Bacillus pasteurii, calcium chloride, and urea into that sand-filled mold.
- The bacteria cements the sand particles together. When urea and calcium chloride come into contact with the bacteria, they form a bond (a biological cementation), creating a sandstone-like biomaterial.
For a better concrete, mix sand with bacteria and urea
— By Janet Fang on January 29, 2014, 11:55 PM PST
That is interesting when you said that concrete was the second most consumed substance on the planet. I did not know that, but I can see how it could be true with all the buildings out there. Is the process for mixing concrete complicated or has it become more standardized over the years? I would be interested to find out. <a href='http://www.carmixcanada.ca/' >http://www.carmixcanada.ca/</a>
What is it with SP contributors that don't grasp the importance of basic informational elements in their poor journalistic endeavors herein. In this article not having the time it took for the sand to "cure" and the costs of the materials/labor to produce the item - creates an article that is at best a poor conversational curiosity - but not close in quality to competent journalism.
SP's form of regurgitational journalism is a sad comment on the quality of today's media. No wonder a fourth of the US population didn't know the earth revolves around the sun in a recent survey.
Very cool. Of course you'd need to go through extensive testing on the properties of concrete made with this "cement" mixture. I'd be curious to see the results..
If such blocks can achieve sufficient strength it might be a good replacement for cinder blocks or hollow cement bricks used in construction. Could drastically reduce cement consumption.