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Posted by tourdemars to Technology at January 7, 2005 04:44 PM
Each year, billions of tons of concrete become the stuff of buildings, highways, dams, sidewalks, and even artworks. The list goes on. Not only is the material ubiquitous, it has a long history. The Romans invented cement-based concrete more than 2,000 years ago and used the material to build architectural masterpieces such as the Pantheon. To Christian Meyer, a structural engineer at Columbia University, there's just no question about it: "Concrete is the world's most important material." And it's one of the simplest. A typical mix of concrete consists of 60 to 75 percent sand and gravel or crushed stone, 15 to 20 percent water, and 10 to 15 percent cement, which is prepared by roasting limestone, clay, and other ingredients. The cement is the paste that binds the components into concrete.TrackBack URL for this entry:
http://www.marsnews.com/mt/mt-tb.cgi/1075
HMMMMMM.......NOW THIS IS INTERESTING...EVERYTHING YOU ALWAYS WANTED TO KNOW ABOUT CONCRETE AND EVEN SOME THINGS YOU DID'NT.BUT THERE IS ONE QUESTION THAT I'M STILL WONDERING ABOUT,WHAT IN THE LIVING HELL DOES CONCRETE HAVE TO DO WITH MARS??? HELLOOO??WHATS THE NAME OF THIS SITE AGAIN....WAIT A MINUTE,I KNOW WHAT I'LL DO,I'LL GO TO CONCRETE.COM AND SEE IF I CAN FIND ANY INFORMATION ON MARS....
HERE'S A MESSAGE TO THE PERSON RUNNING THIS WEBSITE...GET ANOTHER JOB.....
Posted by: Ramona K. at January 10, 2005 11:00 AM
Concrete will be key to colonizing the planet Mars.
Taking the time to imagine how different topics could be related is for those with a curious mind only.
Posted by: tourdemars at January 10, 2005 10:27 PM
South American Hardpan?
Posted by: JW at January 11, 2005 07:00 AM
THANK YOU FOR THAT BIT OF FORETHOUGHT TOURDEMARS,I'M GLAD AT LEAST SOMEONE IS LISTENING TO ME ON THIS WEBSITE,BUT THE POINT I WAS TRYING TO MAKE IS THAT I WOULD LIKE TO HEAR MORE EXCITING THINGS ABOUT MARS,AND ALTHOUGH CONCRETE MAY HOLD THE KEY TO COLONIZATION ON MARS AS YOU PUT IT,I THINK I'LL JUST LET YOU PONDER ABOUT HOW MANY TOPICS COULD AFFECT MARS,AND I'LL SAVE MY CURIOUS THOUGHTS FOR OTHER THINGS THAT REALLY MATTER........ LET'S SEE NOW,HOW ABOUT RUBBER OR CARDBOARD........
OH ,AND J.W. I'M FROM THE GOOD OLD U.S.A. NOT SOUTH AMERICA.....
Posted by: Ramona K. at January 11, 2005 12:40 PM
Hardpan, is a naturally occuring mixture of chemicals within soils that mirror a mixture of concrete, Ramona K. Using some creative thinking processes, what would happen if the "Martian Ocean water" was mixed with lots of gravel, sand, boulders--all from asteroid impacts and millions of years of erosion and dust storms.
Possibly, a very flat region in the northern hemisphere of Mars--a naturally occuring concrete mixture of hard-pan soils.
Yet, very little biological life, ie extremophilic (methogenic and halogenic) bacteria, that could possibly liberate the water from the soil mixture and reform a hydrosphere?
Posted by: JW at January 11, 2005 01:07 PM
WELL,JW YOU SURE MADE ME LOOK STUPID,FEEL BETTER NOW?I'M SORRY THAT I DID'NT KNOW WHAT YOU MEANT BY "SOUTH AMERICAN DEADPAN"AND I HAVE TO ADMIT YOU SOUND LIKE AN ADVANCED SCHOLAR WITH ALL THAT INFO,BUT I WAS KINDA UNDER THE IMPRESSION THAT THIS WEBSITE WAS NOT ONLY FOR THE INTELLECTUAL BRAINIACS SUCH AS YOURSELF,BUT THANK YOU FOR SETTING ME STRAIGHT,I'LL HAVE TO PROMPTLY FILE THAT INFORMATION UNDER U WHENEVER I FEEL THE NEED TO KNOW SOME MORE USELESS BULLS@#*....
Posted by: Ramona K. at January 11, 2005 02:42 PM
Its for people who like to read exciting news, postulate on creative ideas to understand something beyond their normal existance of mundane life that revolves around useless soap-opra shows on TV, boring movies at the theater, and the irony of 9 billion people in 2089 that are all starving for food, because of environmental issues on Earth. Senseless wars fought over oil and natural gas, and other econmomic issuse. Hopefully, as Sedna passes the outer planets, its gravitation pull will dislodge a thousand or so comets, that begin a journey into the inner solar system. A few striking Venus or Mars, and just one big one, to wipe out (human) life on Earth!
Posted by: JW at January 11, 2005 03:33 PM
HEY JW, HOPEFULLY SEDNA WILL DISLODGE THAT IMPACTION ON THE PLANET YOURANUS SO THEREFORE YOU CAN LIGHTEN UP JUST A LITTLE BIT AND BECOME LESS ANAL RETENTIVE.....GET A GRIP SWEETIE...XX
Posted by: Ramona K. at January 12, 2005 11:42 AM
Its not going to be a place where you can order raw materials. Everything will have to be manufactured there. People wil not feel safe enough to move there unless they can cut the umbilical cord completely. That means that steel, glass, concrete and the food, water and oxygen will all need to be processed there.
Posted by: Chris at January 12, 2005 12:48 PM