egypt

This type of stone was made use of in the building of tombs and for paving the floors of pyramids and temples. Until 1980 the predominant theory was that the pyramids were built with giant blocks of limestone that had been moved all the way from the Nile and sculptured to the appropriate shape in the desert. Nonetheless, researches have proved this technique to be practically not possible to execute. Some have recommended that the blocks had been casted suitable on the spot by mixing limestone, clay, water, lime and a hugely active alkaline. Lots of of the joints between...