Product Data Sheet Show all documents

King® ArmourGuard

HIGH ABRASION RESISTANCE SHOTCRETE MATERIAL FOR DRY-MIX PROCESS APPLICATIONS

King® ArmourGuard is a pre-blended and pre-packaged shotcrete material for dry-mix process applications, specially formulated with high-performance steel fiber-reinforced shotcrete mix design to provide superior impact and abrasion resistant characteristics. It contains high early Portland cement, silica fume, steel fiber, blended aggregates, set time accelerators, and other carefully selected components. It is designed to produce superior impact and abrasion resistant characteristics.

  • Superior impact and abrasion resistant characteristics
  • Significantly increased load carrying capacity
  • Significantly increased energy absorbing capacity (toughness)
  • Rapid early-age strength development
  • Low permeability
  • Can be poured in-place as a conventional concrete mix
     
King® ArmourGuard
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 resistant characteristics
  • Significantly increased load carrying capacity
  • Significantly increased energy absorbing capacity (toughness)
  • Rapid early-age strength development
  • Low permeability
  • Can be poured in-place as a conventional concrete mix
     

Packaging

2205 lb (1000 kg) FIBC*

Custom packaging is available to to suit specific job requirements.

*Flexible Intermediate Bulk Container

Product Details

Sustainability / Certifications / Approvals

APPROVALS / STANDARDS

  • By default King® ArmourGuard is blended to meet ACI 506 “Guide to Shotcrete”, Table 1.1, Gradation No. 2 (No Added Abbreviation)
  • Conform to ASTM C1116 / C1116M, Type 1 Steel fiber reinforced concrete
  • Conforms to ASTM A820 / A 820M-04, Type 1 cold drawn wire
 
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
32°F - 95°F (5°C - 35°C)

Underground Environments
Physical properties may be adversely affected if material is stored in
temperatures below 32°F (0°C) and should be allowed to warm to ambient
underground temperatures before application
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)

4 hours

290 psi (2 MPa)

8 hours

1150 psi (8 MPa)

12 hours

1750 psi (12 MPa)

  

ASTM C1604

1 day

3625 psi (25 MPa)

7 days

5800 psi (40 MPa)

28 days

8700 psi (60 MPa)

Application

Application Information

Substrate Temperature

King® ArmourGuard should not be applied when ambient, substrate and material temperatures are below 32 °F (0 °C)
Consumption

Coverage

Approx. 16.5 ft3 per 2205 lb FIBC (0.43 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® 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® 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

  

  • ArmourGuard should not be applied when ambient, substrate and material temperatures are below 32 °F (0 °C).
  • 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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