Product Data Sheet Safety Data Sheet Show all documents

King® ArmourGuard

HIGH ABRASION RESISTANCE SHOTCRETE MATERIAL FOR DRY-MIX PROCESS APPLICATIONS

King® ArmourGuard is a specially formulated, high-performance, steel fiber-reinforced shotcrete mix designed to provide superior impact and abrasion resistant characteristics. This product is a pre-blended, pre-packaged, dry-process shotcrete material containing 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
     
Product Data Sheet Safety 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
  • Use of a predampener in conjunction with dry-process accelerated shotcrete is not recommended. Contact your Sika STM Technical Support Staff for more information.
 

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

  • 1,000 KG (2,205 lb) FIBC

*custom packaging is available to to suit specific job requirements.
 

Product Details

Sustainability / Certifications / Approvals

APPROVALS / CERTIFICATES

Blended to meet ACI 506 “Guide to Shotcrete”, Table 1.1, Gradation No. 2

Conform to ASTM C 1116/C 1116M, Type 1 Steel fiber reinforced concrete

Conforms to ASTM A820 /A 820M - 04, Type I cold drawn wire
Product Information

Shelf Life

12 months in original, unopened packaging

Storage Conditions

Material should be stored in a dry, covered area, protected from the elements. Unopened bags have a shelf life of 12 months. Physical properties of King® ArmourGuard may be adversely affected if material is stored in temperatures below 0 °C (32 °F). Material stored below these temperatures should be allowed to warm to ambient underground temperatures before shooting.

 
Technical Information

Abrasion Resistance

PROCEDURE C

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

4 Hours

2 MPa (290 psi)

8 Hours

8 MPa (1150 psi)

12 Hours12 MPa (1750 psi)

1 Day

25 MPa (3625 psi)

7 Days

40 MPa (5800psi)

28 Days 60 MPa (8700psi)

Application

Application Information

Substrate Temperature

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

Curing Time

Good curing conditions are beneficial to optimizing physical properties of King® 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”.
Consumption

Yield

Approx. 0.45 m3 (16.5 ft3) / 1,000 KG (2,205 lb) bag
Application steps

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).

   

CONCRETE SURFACES

All surfaces to be in contact with King® ArmourGuardmust be free from dust, oil, grease or any other foreign substances that may interfere with the bond of the material. Clean the area to be repaired with potable water, leaving the concrete 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.

  • ArmourGuard should not be applied when ambient, substrate and material temperatures are below 0 °C (32 °F).
  •  Recommended minimum inside diameter of shotcrete hoses should be 50 mm (2 inches).

CLEAN UP

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

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