| 摘要 |
<p>This invention relates to a method for solidifying and storing waste material in order to provide the waste material with a very long stability through time, comparable to certain archeological materials, more particularly it also allows the solidification and storage of waste materials which are dangerous or potentially toxic for human beings and natural environment. The stabilization, solidification and storage method of waste material comprises: a) the preparation and mixture of waste with an alkaline silico-aluminate geopolymer binder in proportions such that a mixture is obtained containing in situ a geopolymer matrix of the type poly(sialate) (-Si-O-Al-O) and/or poly(sialate-siloxo) (-Si-O-Al-O-Si-O) and/or poly(sialate-disiloxo) (-Si-O-Al-O-Si-O-Si-O), said geopolymer matrix providing both for the stabilization of toxic elements and the solidification into a solid and durable material; b) treatment of said mixture by conventional engineering means in order to obtain a storable material having a stability through time at least equivalent to that of archeological materials. In this geopolymer matrix, the molar ratio of oxides Al2O3:Na2O+K2O is comprised between 1.5 and 4.0, these values allowing to impart a very long stability through time to the waste materials.</p> |
