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Stages of the geopolymerization process according to the model of [140]: (a) stage 1; (b) stage 2; (c) stage 3; (d) stage 4; (e) stage 5; (f) stage 6 in the case when NaOH acts as an activator; (g) stage 6 in the case when liquid glass acts as an activator; (h) stage 7.
