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Nesgroup address: rec.travel.europe - Date & Time for the message: Thu, 08 Sep 2005 20:16:07 +0200
/ Author of the message: Mxsmanic |
Title of the message: |
Re: Katrina
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Text of the message: |
Earl Evleth writes: > It could be both acid and base catalyzed, so just water sloshing around > concrete is not enough. Contact with water alone makes concrete stronger over time, which is why concrete structures in contact with water end up harder than the rocks to which they are attached. By now, dams like Hoover Dam are so strong that anything that might wash them away might just as easily erode the surrounding cliffs (it does help that Hoover is overengineered--it's the only dam on the Colorado that could withstand overtopping and survive). There is an excellent chance that these dams will survive for many thousands of years. > But it does pose the question as to how long > concrete structures will last. The ones the Romans built are still around. Concrete is thousands of years old. > Will old German bunkers be around as long as the pyramids? The Pyramids used materials similar to concrete, particularly for |
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Estaplace.com is one the Ceglia Giovanni projects, started on 20 July 2005, and online since 20 August as a real estate platform for listings, mainly operating on the Italian and American/English market in the Internet, Estaplace would like to become the point of referiment for home sellers and home buyers, a site where private owners or real estate agencies can have the possibility to show their offers to the world. Estaplace.com is only one of the Giovanni Ceglia's sites. Everyday Giovanni Ceglia works to improve new Internet tools and services for online marketing and business. Estaplace.com will become the biggest portal for real estate business and investments online.