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... Science Frontiers ONLINE No. 54: Nov-Dec 1987 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects Egyptian pyramids actually made of synthetic stone?The assertion of the title above has been around for a while, but now it has been detailed in a paper before the American Chrmical Society. "An authority on ancient building materials reported evidence Friday that the Egyptian pyramids were built of a remarkable synthetic stone that was cast on the site like concrete. "The new theory challenges the widely accepted belief that the pyramids were built from natural stone obtained from quarries and laboriously moved to the site on wooden rollers. "Dr. Joseph Davidovits said that the synthetic pyramid stone was made with cement far stronger than modern portland cement, which binds together ... rock and sand in concrete. Portland cement has an average span of about 150 years, he said, but cements like those used in the pyramids last thousands of years. .. .. . "Davidovits said that a new deciphering of an ancient hieroglyphic text now provides some direct information about pyramid construction and supports his theory that synthetic stone was the construction material. .. .. . "Davidovits said the cement used in the pyramids binds the aggregate and other ingredients together chemically in a process similar to that involved in the formation of natural stone. "Portland cement, in contrast, involves mechanical rather then molecular bonding of the ingredients. Thus, pyramid stone is extremely difficult to distinguish from natural stone. "He cites a number of other pieces of evidence to support his theory ...
Terms matched: 2 - Score: 862 - 15 May 2017 - URL: /sf054/sf054a02.htm
... Mesopotamians were able to synthesize basalt can be seen at Mashkanshapir about 80 kilometers south of Baghdad. Slabs of this artificial rock -- flat and smooth on one side from the molds -- are abundant. In fact, some 100 cubic meters of the material have been found. (Stone, E.C ., et al; "From Shifting Silt to Solid Stone: The Manufacture of Synthetic Basalt in Ancient Mesopotamia," Science, 280:2091, 1998. Also: Bower, B.; "Ancient Mesopotamians Made Rock from Silt," Science News, 153:407, 1998.) Comments. In the light of the Mesopotamian's success in making artificial stone, perhaps we should reconsider Davidovits' claim that the ancient Egyptians cast some of the blocks they used ... Over 3,000 Years Ago!Basalt is a blackish volcanic rock that is hard and durable. In nature it sometimes occurs in long prisms of hexagonal cross section. In fact, ancient Micronesians quarried multiton basalt prisms to build their fantastic megalithic complex of 92 artificial islets at Nan Madol. (SF#45) The inhabitants of ancient Mesopotamia had no basalt quarries at hand. Indeed, building stone of any kind was exceedingly scarce. What the Mesopotamians of the second century B.C . did have in abundance was alluvial silt. From this unpromising material they were able to make their pottery, writing tablets, and art objects. However, for grinding grain and engineering structures they needed something harder and stronger. Their innovative solution was: artificial basalt made from silt. They simply melted ...
Terms matched: 2 - Score: 265 - 15 May 2017 - URL: /sf119/sf119p01.htm
... Science Frontiers ONLINE No. 54: Nov-Dec 1987 Other pages Home Page Science Frontiers Online All Issues Last Issue Next Issue Sourcebook Project Sourcebook Subjects Contents Archaeology 300,000-YEAR-OLD SITE IN BRAZIL Egyptian pyramids actually made of synthetic stone? Astronomy Icebergs and crouching giants Big-bang bashers Fractals, fractals everywhere Biology Instances of observed speciation Plants are not color blind! Electric-power plants! Honest, this is the last "plant" item! The insects' revenge Geology Now, it's comet showers that did it The changing magnetic climate: does it affect civilizations? Huge underground electrical circuit What heats the earth Geophysics Toads fall to squashy fate Ball lightning in bavaria Psychology A HOAX ADMITTED Esp of atoms? Chemistry and physics Through a peephole tantalizingly Unclassified The uncertainty ... knowledge ...
Terms matched: 2 - Score: 234 - 15 May 2017 - URL: /sf054/index.htm
