Subsoil: a resource
A defend from radiations
The growing use of natural or artificial (radioisotopes) radioactive elements in medicine, and of industrial nuclear techniques, brought up the need for the creation of completely insulated environments, in order to prevent harmful radiations from spreading. Men have managed to study and produce buildings, concrete and plasters that do not allow radiations to go through. The inerts that are used to produce these cement agglomerates are made of special granulates obtained through barita fragmentation (BaSO4). Barita is quite a common mineral that contains barium (Ba), an element that is able to prevent nuclear radiations from spreading. When the binder needs to have a particular mechanical resistance, a corundum granulate (Al2O3) is used as a supplementary inert, since its hardness is highly suitable for the desired objective.
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