Modified grouting cement

The modified grouting cement is made of Portland cement and a grouting agent that has a modified effect on the cement properties. The impregnability of the cement (including fluidity and stability) is strong, with strong infusion ability to the fine fissures, high bond strength with the poured body, good impermeability and corrosion resistance, and it is non-toxic and non-polluting. New cement grouting material.
1) Performance index 1 Fineness: less than 30μm particles ≥395%, less than 6μm particles ≥ 40%;
2 Strength: Press CB177
Compressive strength (MPa) 3d 31.0
28d 62.5
Flexural strength (MPa) 3d 5.5
28d 8.0
3 slight expansion: press GB 313
1d≥0.05%
28d 0.15% to 0.60%
4 impermeability: According to JC311, 1:3 mortar strength test body, after curing in water for 3d, under constant pressure of 1.OMPa water pressure for 8h impervious.
5 slurry stability: W/C = 1.0, free sedimentation rate of <5%;
6 slurry viscosity: funnel viscometer, W / C = l.0, when the flow of 46 to 48s.
2) Use The modified grouting cement is suitable for the basic unity and curtain grouting of reinforced concrete structures, cracking of dam bodies, and sealing and reinforcement of tunnels. It is also applicable to the reinforcement of industrial and civil buildings. It is also applicable to the protection of the complex formation pores in geological exploration, the reinforcement of concrete for roads, bridges, airport runways and mines, and the repair of concrete cracks. It has been applied in grouting projects such as Xin'anjiang, Gutianxi, Meishan hydropower dam curtain impervious reinforcement, dam concrete crack repair, and Pingzhuang coal mine shaft anti-seepage well.