in the design, Lugeon permeability tests showed values exceeding the designer’s target criteria, which establish a hydraulic conductivity equal to or lower than 1 Lugeon Unit (≤ 1 × 10⁻⁵ cm/s). These results suggest that, in certain zones, microcement grout is unable to fully penetrate and seal the finest fractures, making it necessary to evaluate lower-viscosity products with higher penetration capacity. 3. OBJECTIVE OF THE STUDY The main objective of this study is to experimentally evaluate, at laboratory scale, the rheological behavior and gelation characteristics of acrylamide-based resins, acrylates, and colloidal silica solutions as high-penetrability alternatives for seepage control in fractured rock masses where cementitious grouts present limitations.
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