Product Data Sheet Show all documents

King® RS ArmourGuard

RAPID STRENGTH HIGH ABRASION RESISTANCE SHOTCRETE MATERIAL FOR DRY-MIX PROCESS APPLICATIONS

King® RS ArmourGuard is a pre-blended and pre-packaged dry-mix process shotcrete material powered by Rapid Set® technology. It contains steel fibers, blended aggregates, and other carefully selected components. It 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
     
Product Data Sheet Show all documents

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

2205 lb (1000 kg) FIBC*

Custom packaging is available to suit specific job requirements.

*Flexible Intermediate Bulk Container

Product Details

Product Information

Shelf Life

12 months in original, unopened packaging

Storage Conditions

Store in a dry, covered area, protected from the elements
For optimum performance it is recommended to store the material between
40°F - 95°F (5°C - 35°C)

 
Technical Information

Abrasion Resistance

PROCEDURE - C

ASTM C779

Rate of Wear

7 days

6.7 x 10-3 in/min (170 µm/min)

28 days

4.7 x 10-3 in/min (120 µm/min)

LASA MODIFIED TUMBLING

Volume of Material Lost

24 hours

12.2 in3 (0.20 L)

48 hours

20.7 in3 (0.34 L)

Compressive Strength

ASTM C116 (MODIFIED)

2 hours

3000 psi (21 MPa)

  

ASTM C1604

1 day

6500 psi (45 MPa)

7 day

7250 psi (50 MPa)

28 day

8000 psi (55 MPa)

Application

Consumption

Coverage

Approx. 16.5 ft3 per 2205 lb FIBC (0.45 m3 per 1000 kg FIBC)

*May vary according to projects conditions
Application steps

EQUIPMENT

Special precautions needed when using predampeners with dry blended powdered accelerated shotcrete.

  

Contact your Sika STM Technical Representative for more information.

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 King® RS ArmourGuard in accordance with the ACI 506 “Guide to Shotcrete” publication. If placing as conventional concrete, note that mix is not pumpable.

    

Performance of in-place shotcrete relies heavily upon application techniques. The shotcrete material, equipment and key personnel should be pre-qualified prior to project start-up to ensure optimum quality of inplace shotcrete.

   

OPTIMUM PERFORMANCE

  

  • Material should be allowed to warm to at least 60 °F (15 °C) prior to shooting in order to optimize early-age compressive strength results.
  • Recommended minimum inside diameter of shotcrete hoses should be 2 inches (50 mm).

  

Contact your Sika STM Technical Representative for more information.

CURING TREATMENT

Curing is essential to optimize physical properties of the shotcrete and minimize plastic shrinkage. Product should be cured immediately after material has reached initial set in accordance with ACI 308 “Guide to Curing Concrete ”. Continuously moist cure for a minimum period of seven (7) days. Alternatively, moist cure for a minimum period of 24 hours and apply a curing compound that complies with ASTM C309. Curing is particularly critical in rapid moisture loss conditions such as high temperatures, high winds and low humidity.

 
Underground Environments
Good curing conditions are beneficial to optimizing physical properties. 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'' .

CLEANING OF TOOLS

Clean all tools and equipment after use with water. Once hardened, the product can only be removed mechanically.

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