Roman Cement and Pozzolans

Original post by Patrick Webb Source: http://www.traditionalbuilding.com/15320-2/ “There is also a kind of powder which from natural causes produces astonishing results. It is found in the neighbourhood of Baiae and in the country belonging to the towns round about Mt. Vesuvius. This substance, when mixed with lime and rubble, not only lends strength to buildings …

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