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For the execution of the works on the tunnel structures under water-saturated unstable soils of the nature plavannya, provided for their stabilization and strengthening with the use of chemical methods and technological equipment for 2-component jet grouting. An important factor determining the effectiveness of mineral-based injection systems is their material homogeneity with concrete enclosing structures of tunnel structures, high strength and durability, low filtration coefficient, manifestation of the effect of self-healing cracks in concrete with a width of up to 1 mm. The main criterion of manufacturability of injection mixtures designed to eliminate water seepage in the tunnel and peritonealny structures, is a low viscosity and a high sedimentation stability, stored for up to 90 min controlled structure and kinetics of curing after injecting works, durability, thermo frost, frost-salt resistance the.Based on these conditions, as well as taking into account the variety of tasks associated with the elimination of water in underground structures, experts, our UNIVERSITY developed and mastered the injection of a mixture of mineral-based «SFC+», «Aqualiner-U», «United Aqualiner-MD», «Intracom». It should be noted that particularly finely dispersed binders «Intracom» was developed in the framework of the program of import substitution, as an alternative mineral binder «microdur the» widely used for making various injection systems mineral Foundation. |
