| abstract |
The present invention relates to a grouting injection composition for tunnel reinforcement, and by improving the composition of the composition, the setting time can be adjusted and the compressive strength can be increased, thereby reducing the time and cost required for the grouting construction. . The injection composition of the present invention for realizing this is calcium oxide (CaO) 20-40 wt%, sulfur trioxide (SO 3 ) 1-40 wt%, aluminum oxide (Al 2 O 3 ) 10-30 wt%, silicon dioxide (SiO 2 ) 1-20 wt%, magnesium oxide (MgO) 0.5-10 wt%, iron trioxide (Fe 2 O 3 ) 0.5-10 wt%, calcium sulfoaluminate-based expansion material 0.5-5 wt%, pozzolanic seasoning 0.5 to 5% by weight of powder, 0.5 to 5% by weight of curing agent, 0.5 to 5% by weight of sodium carbonate, and 0.5 to 5% by weight of natural anhydride to form a mixed composition. |