Alkali-Free Accelerator for Shotcrete
(MNC-Q2)
Description
MNC-Q2 is a high performance alkali-free accelerator for sprayed concrete. It is a liquid form which dosage can be varied as according to the designed setting and hardening times.
Application
MNC-Q2 is suitable for all applications, where high and early strength, good final strength and extremely thick layers are required.
- Temporary and permanent rock support in tunnels.
- Rock support in mining.
- Poor ground conditions.
- Tunnel linings, cement ground injection and foam concrete which need acceleration of cementitious grouts.
Features
- Quick setting property allowed with rapid work progress and construct thick sprayed concrete linings via layered application during one construction sequence. Initial setting time is 2 min to 5 min, final setting time is 3min to 10min.
- Good adhesiveness, one spray layer can be 8 mm to 150mm.
- High strength and concrete performance durability.
- Easy handling as well as facilitating accurate addition to concrete.
- Very low dust production with good working environment.
- Lower handling cost.
Technical Data Sheet
Items |
Specification |
Form |
Liquid |
Visual Appearance |
Beige |
Density (+20℃) |
1.43 ±0.03g/ml |
pH value (1:1 water solution) |
2.6±0.5 |
Viscosity |
>400mPa.s |
Thermal stability |
+5℃ to +35℃ |
Chloride |
Free |
Recommended addition rate: 3% to 8%.of cement quantity |
Storage
MNC-Q2 kept in closed containers which made of plastic, glass fiber or stainless steel.
The container is 250kg per drum. The shelf life is 8 months.