Özet:

Immobilization by cementation of anion­exchange resins is closely associated with high pH­values of a cement matrix as a result of compositional build­up of the cements used as binding agents. At high pH values the anion­exchange resins with acid reaction (pH<5) start recycling in a body of the hardening cement compound resulting in its destruction. The paper covers the results on efficiency of the hybrid alkali activated cements as binding agents which at the initial stage of hydration have high pH values of the cement stone (pH>12), thus providing a required strength gain. Later, pH values tend to lower (pH<10), thus retarding the process of resin recycling to the values which do not affect negatively durability of the resulted solidified waste forms. The examples of hybrid alkali activated cements compositional build up are provided together with physico­mechanical properties of the resulted solidified waste forms. These results show that these properties are superior to those specified in the standards of the P. R. China, these are: GB 7023 and GB 14569. Author Biographies Pavlo Kryvenko, Kyiv national university of construction and architecture Povitroflotskii ave., 37, Kyiv, Ukraine, 03037 Doctor of Technical Sciences, Professor V. D. Glukhovskii Scientific research institute for binders and materials

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