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Keyword: geopolymer

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  • War Of The Pyramid Theorists

    04/02/2007 4:37:58 PM PDT · by blam · 61 replies · 1,143+ views
    Jerusalem Post ^ | 4-1-2007 | Yaniv Salama-Scheer - Jorg Luyken
    Apr. 1, 2007 12:21 | Updated Apr. 1, 2007 14:53War of the pyramid theorists By YANIV SALAMA-SCHEER AND JORG LUYKEN Every significant historical site goes through periods of the day when the surrounding environment make a visit truly worthwhile. At the pyramids of Giza, the view at sunset can push away the claustrophobic memory of the flocks of tourists and local souvenir-sellers who dominate the site earlier in the day. In the hush of sunset, visitors can appreciate the beautiful symmetry of these ancient tombs as the half-light of dusk eradicates the imperfections of age that are evident during the...
  • Stones of the Pyramids were Poured, Not Chisled

    05/21/2007 10:44:47 AM PDT · by mission9 · 96 replies · 4,525+ views
    Associated Content ^ | 05-21-07 | Ranger
    Drexel University researchers are revising the book on the Pyramids of Egypt, the last surviving wonder of the ancient world. The standard hypothesis for their construction speculates that ancient Egyptians carved the blocks out of nearby deposits of natural limestone, using stone age tools, and then floated the stones on barges, and used primitive ramps and levers to wrestle the blocks into place. The fact is, no one knows even to this day how the Pyramids were built. Many of the limestone blocks fit so perfectly that not even a human hair ....
  • Mathematics In Ancient Egypt

    01/26/2007 3:09:50 PM PST · by blam · 36 replies · 1,445+ views
    Al-Ahram ^ | 1-26-2007
    Mathematics in Ancient Egypt the Ancient Egyptians possess an ingenious skill for calculation? Assem Deif* works out an ancient problem The Greeks developed mathematics as a deductive science that reached its climax with Euclid of Alexandria in his masterpiece The Elements. Before that, during the ancient Egyptian era, mathematics was an inductive discipline of a utilitarian nature used to perform practical tasks such as flood control or land measurement using rope. It has been suggested that mathematics then amounted to no more than the two-times table and the ability to find two-thirds of any number. The whole structure of Egyptian...
  • Riddle Of The Great Pyramids Of Giza: Professor Finds Some Building Blocks Were Concrete

    12/09/2006 4:41:35 PM PST · by Maelstorm · 40 replies · 1,548+ views
    www.sciencedaily.com ^ | December 9, 2006 | Drexel University
    Riddle Of The Great Pyramids Of Giza: Professor Finds Some Building Blocks Were Concrete In partially solving a mystery that has baffled archeologists for centuries, a Drexel University professor has determined that the Great Pyramids of Giza were constructed with a combination of not only carved stones but the first blocks of limestone-based concrete cast by any civilization. Picture of the Great Pyramid (Kheops pyramid). (Taken by Alex lbh in April 2005 / Courtesy of Wikipedia) Ads by Google Michel Barsoum, professor of materials engineering, shows in a peer-reviewed paper to be published Dec. 1 in the Journal of...
  • Pyramids were built with concrete rather than rocks, scientists claim

    12/01/2006 3:55:23 PM PST · by Rodney King · 140 replies · 3,297+ views
    UK Times Online ^ | Today | Chalres Bremner
    The Ancient Egyptians built their great Pyramids by pouring concrete into blocks high on the site rather than hauling up giant stones, according to a new Franco-American study. The research, by materials scientists from national institutions, adds fuel to a theory that the pharaohs’ craftsmen had enough skill and materials at hand to cast the two-tonne limestone blocks that dress the Cheops and other Pyramids. Despite mounting support from scientists, Egyptologists have rejected the concrete claim, first made in the late 1970s by Joseph Davidovits, a French chemist. The stones, say the historians and archeologists, were all carved from nearby...
  • Research team recreates ancient underwater concrete technology

    04/09/2005 4:19:02 AM PDT · by Mike Fieschko · 20 replies · 738+ views
    PhysOrg.com ^ | Apr 7, 2005 | unknown
    Research team recreates ancient underwater concrete technology A University of Colorado at Boulder professor and his colleagues have taken a page from the writings of an ancient Roman architect and built an underwater concrete pier in the manner of those set in the Mediterranean Sea 2,000 years ago. CU-Boulder history Professor Robert Hohlfelder, an internationally known underwater archaeologist, said scholars have long been in awe of the engineering feats of the early Romans. A former co-director of the international Caesarea Ancient Harbor Excavation Project, he said the research effort was spurred by the stunning hydraulic concrete efforts undertaken at...
  • Who Built The Pyramids?

    08/17/2003 5:13:35 PM PDT · by blam · 102 replies · 9,802+ views
    Harvard Magazine ^ | 8-17-2003 | Jonathan Shaw
    Who Built the Pyramids? Not slaves. archeaologist Mark Lehner digging deeper, discovers a city of privileged workers. by Jonathan Shaw The pyramids and the Great Sphinx rise inexplicably from the desert at Giza, relics of a vanished culture. They dwarf the approaching sprawl of modern Cairo, a city of 16 million. The largest pyramid, built for the Pharaoh Khufu around 2530 B.C. and intended to last an eternity, was until early in the twentieth century the biggest building on the planet. To raise it, laborers moved into position six and a half million tons of stone—some in blocks as large...