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Experiments

In our first book, “EGYPTIAN PYRAMIDS”, the thesis was advanced that stone blocks with damp wooden wedges were blasted from the stone. This thesis, frequently presented in writings must be strongly challenged and was inspected by members of the association "Hobby-Ägyptologen e.V.". The limestone used for this test weighed 450 kg and came from a quarry near the city of Aachen. The scratch test with drops of diluted hydrochloric acid, which reacts to stone blocks with the intense formation of fizzing blisters, confirmed for us that this was a block of limestone (calcite).

Experiment:
Using a drill and steel chisel, four wedge holes were made in an experiment block over 12 hours. The wooden wedges corresponding to the wedge hole were driven into the wedge holes with a sledge hammer and dampened with a water sprinkling system for 100 hours. Three removal attempts with different types of wooden wedges (cedar, oak and beech wood) were conducted. Only dry wooden wedges were used, which were optimized by drying in the oven at 100° C to remove the remaining moisture.

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Result:

Despite a short distance as well as a deeper indentation of the wedge holes to the regular sizes of the Egyptian quarries, the blocks did not split. Through this experiment, we additionally learned that the pyramid builders were never able to create exact wedge holes with their stone axes due to the enormous amount of time it would have taken. An attempt was started with a refurbished bronze chisel which was interrupted after 30 minutes as the chisel was blunted without leaving a trace on the block. As the experiment priorly described shows, the idea that the pyramid builders know the wedge technology for removing the blocks must be refuted. In our subsequent research, we did not find a single trace of half wedge holes which should be visible on the unprocessed blocks. The traces of wedge holes on the loose blocks which lay around the Giza pyramids were left by stone robbers in the Middle Ages and/or are recent, from when the pyramids were used as a quarry for the creation of Cairo.