Applications:
– Tunnels, culverts, embankments, excavations
– Concrete repairs and structural reinforcement (concrete/masonry)
Key Benefits:
✔ Reduces material sloughing
✔ Ideal for arched/curved surfaces
✔ Enhanced adhesion
✔ Surface waterproofing
Dosage:
– Standard: 2–4% of cement weight
– Fast-setting (accelerated):** 5–6% of cement weight
– Note: Exceeding 9% reduces compressive strength.
Application Methods:
1. Dry-Mix Process:
– Cement + aggregates are pneumatically conveyed, with water injected at the nozzle.
2. Wet-Mix Process:
– Pre-mixed mortar (including RW Shotcrete + water) is sprayed onto the surface.
– Pre-application testing for setting time and 24-hour strength is mandatory.
Performance Evaluation (24-Hour Strength):
| Initial Set | Final Set | 24-Hr Strength (MPa) | Rating |
|————-|———–|———————–|————–|
| ≤2 min | 6–8 min | 18–20 | Excellent |
| ≤5 min | 8–12 min | 12–15 | Acceptable |
| >10 min | >15 min | <10 | Poor |
—
Technical Specifications
– Appearance: Off-white/yellowish powder
– Specific Gravity: 1.3 g/cm³
– pH (aqueous): 6.5–7.5
– Chloride-Free: Yes
– Shelf Life: 12 months in original packaging (store away from moisture/extreme temps)
– Packaging: 25 kg bags
Safety & Compliance
Safety Precautions:
– Avoid contact with eyes, skin, or food. Rinse immediately if exposed.
– Mandatory PPE during use: Gloves, goggles, and respirator.
Environmental Note:
– Do not dispose of excess material in soil or water systems.
Quality Assurance:
Manufactured in compliance with international standards.
