King® RS ArmourGuard
King® RS ArmourGuard is a pre-blended, pre-packaged, dry-process shotcrete material powered by Rapid Set® technology, containing steel fibres, blended aggregates and other carefully selected components. King® RS ArmourGuard is designed to produce superior impact and abrasion resistant characteristics, greatly reduced setting times and very rapid strength development.
- Superior impact and abrasion resistance characteristics
- Significantly increased load carrying capacity
- Significantly increased energy absorbing capacity (toughness)
- Very rapid early age strength development
- Significantly reduced rebound, resulting in lower material usage
- Low shrinkage
- Blended to meet ACI 506 “Guide to Shotcrete”, Table 1.1, Gradation No. 2
Usage
- Ore pass linings
- Ore pass brows
- Truck dumps
- Ore and rock chutes
- Other areas of high impact and abrasion
Advantages
- Superior impact and abrasion resistance characteristics
- Significantly increased load carrying capacity
- Significantly increased energy absorbing capacity (toughness)
- Very rapid early age strength development
- Significantly reduced rebound, resulting in lower material usage
- Low shrinkage
- Blended to meet ACI 506 “Guide to Shotcrete”, Table 1.1, Gradation No. 2
Packaging
- 1000 kg (2205 lb) FIBC
*Custom packaging is available to suit specific job requirements.
Product Details
Shelf Life
12 months in original, unopened packaging
Storage Conditions
Store dry, ensuring that product is not exposed to rain, condensation or high humidity
Abrasion Resistance
| 7 days | 170 µm/min (6.7 x 10-3 in/min) |
| 28 days | 120 µm/min (4.7 x 10-3 in/min) |
| ( Rate of wear) |
LASA modified tumbling
| 24 hours | 0.20 L (12.2 in3) |
| 48 hours | 0.34 L (20.7 in3) |
| (volume of material lost) |
Compressive Strength
| +21 °C ( 70 °F) | |
| 2 hours | 21 MPa (3000 psi) |
| 1 day | 45 MPa (6500 psi) |
| 7 days | 50 MPa (7250 psi) |
| 28 days | 55 MPa (8000 psi) |
Application
Curing Time
Good curing conditions are beneficial to optimizing the physical properties of King® RS ArmourGuard. Although the high relative humidity commonly found in underground environments provides for good curing conditions, additional curing is often appropriate and should be performed in accordance with ACI 308 “Guide to Curing Concrete”.
Yield
Approx. 0.45 m3 (16.5 ft3) / 1000 kg bag
*Yield in service may slightly vary according to projects conditions
SURFACE PREPARATION
Rock Surfaces: All surfaces to be in contact with King® RS ArmourGuard must be free from dust, oil, grease or any other foreign substances that may interfere with the bond of the material. Remove all loose or delaminated rock. Clean the area with potable water, leaving the substrate saturated but free of standing water (SSD).
APPLICATION
Apply in accordance with the ACI 506 “Guide to Shotcrete” publication.
OPTIMUM PERFORMANCE
- Recommended minimum inside diameter of shotcrete hoses should be 50 mm (2 inches).
- Material should be allowed to warm to at least +15 °C (60 °F) prior to shooting in order to optimize early-age compressive strength results.
CLEAN UP
Clean all tools and equipment after use with water. Once hardened, the product can only be removed mechanically.
