Romans have been using forms of naturally occurring cement since before the year 0, in constructing aqueducts and other large infrastructures in their vast empire. The practice of using it has continued to this day, with most of the world's large buildings relying on it for their strength. As funny as it may sou... |
10 September 2009
04:50 GMT |
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Ever since Ancient time, when mortar, concrete and cement were not your average commodities in the world, people have employed an old constructions technique that was equally cheap and green. With the use of rammed earth, engineers of old managed to erect impressive structures, ranging from garrisons to churches and ... |
2 June 2009
21:01 GMT |
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It's less dangerous walking through the jungle than driving a car in a big city. The city traffic clearly produces much more victims. A new study could improve the state of victims of the most severe spinal injuries caused by car crashes.A collaboration between the University of Leeds and Queen's University... |
30 October 2007
05:04 GMT |
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The common theory says that the Egyptian pyramids were made of carved giant limestone blocks that were carried up on ramps. But this explanation leaves a large quantity of unsolved questions. Two decades ago, Joseph Davidovits, Director of the Geopolymer Institute in St. Quentin, France, said that the pyramid blocks ... |
19 May 2007
08:06 GMT |
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