Product Data Sheet Show all documents

King® RS-D2

RAPID STRENGTH SHOTCRETE MATERIAL FOR DRY-MIX PROCESS FOR UNDERGROUND APPLICATIONS

King® RS-D2 is a rapid hardening, pre-blended, and pre-packaged shotcrete material formulated for dry-mix underground applications, powered by Rapid Set® technology. It contains blended aggregates and other carefully selected components. It has greatly enhanced shooting characteristics and physical properties, greatly reduced setting times, along with very rapid strength development.

  • Very rapid early age strength development
  • Improved adhesive and cohesive plastic properties
  • Significantly reduced rebound, resulting in lower material usage
Product Data Sheet Show all documents

Usage

  • Ground support applications for mining, tunneling and other underground openings.
  • Construction of underground bulkheads, backfill barricades, pillars, ventilation walls and other underground concrete structures.

Advantages

  • Very rapid early age strength development
  • Improved adhesive and cohesive plastic properties
  • Significantly reduced rebound, resulting in lower material usage
  • Superior ability to build greater thicknesses in a single pass in both vertical and overhead orientations
  • Low shrinkage
  OPTIONAL FEATURES & BENEFITS    Micro-Synthetic Fiber (SY)
  • Micro-Synthetic fibers reduce cracking caused by intrinsic stresses
  • Type III synthetic fiber in accordance with ASTM C1116
  • Grade FR Class I shotcrete in accordance with ASTM C1480
   Macro-Synthetic Fibers (MF)
  • Significantly increased load carrying capacity
  • Significantly increased energy absorbing capacity (toughness)
  • Significantly increased impact resistance
  • Significantly decreased wear on placing equipment and accessories when compared with steel fibers
  • Ideal for use in man-ways or other areas where people may come in contact with the shotcrete surface
  • Reduced cracking due to drying shrinkage
  • Very rapid early-age strength development
  • Improved adhesive and cohesive plastic properties
    Product Dosage of fibers King® RS-D2 MFB High King® RS-D2 MFCMedium King® RS-D2 MFD Low   Steel Fibers (ST) Different grades of King® RS-D2 ST with higher and lower dosage of Steel fibers are available upon request.
  • Significantly increased load carrying capacity
  • Significantly increased energy absorbing capacity (toughness)
  • Significantly increased impact resistance
   Gradation
  • By default King® RS-D2, King® RS-D2 MF and King® RS-D2 ST are blended to meet ACI 506 “Guide to Shotcrete”, Table 1.1, Gradation No. 2 (No Added Abbreviation)
  Examples: 
  • For King® RS-D2 with steel fibers and gradation No. 1, the name of the product would be:
    King® RS-D2 ST G1.
  • For King® RS-D2 with a high dosage of macro-synthetic fibers, and gradation No. 2, the name of the product would be:
    King® RS-D2 MFB.
  • For King® RS-D2 with gradation No. 1, the name of the product would be:
    King® RS-D2 G1.

Packaging

2205 lb (1000 kg) FIBC*

Products containing Macro-Synthetic fibers (MF) or Steel fibers (ST) can only be packaged in FIBC*

Custom packaging is available to suit specific project 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 between

40°F - 95°F (5°C - 35°C)

Physical properties may be adversely affected if material is stored in temperatures below 40°F (5°C) and should be allowed to warm to ambient underground temperatures before application 
Technical Information

Compressive Strength

ASTM C116 (MODIFIED)

2 hours

3000 psi (21 MPa)

ASTM C1604

1 day

4350 psi (30 MPa)

7 days

5800 psi (40 MPa)

28 days

7250 psi (50 MPa)

Flexural Strength

ASTM C78

King® RS-D2

King® RS-D2 ST

King® RS-D2 MF

7 days

800 psi (5.5 MPa)

-

-

28 days

870 psi (6.0 MPa)

785 psi (5.4 MPa)

785 psi (5.4 MPa)

 

Porosity

BOILED ABSORPTION

ASTM C642

7.0 %

MAXIMUM OF PERMEABLE VOIDS

ASTM C642

King® RS-D2

15.0 %

King® RS-D2 MF 

14.0 %

Application

Application Information

Set Time

ASTM C1117

Initial

5 minutes

Final

10 minutes

 
Consumption

Coverage

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

All surfaces to be in contact with product 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-D2 in accordance with the ACI 506 “Guide to Shotcrete” publication.

  

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 in-place shotcrete.

  

OPTIMUM PERFORMANCE

  

  • King® RS-D2 physical properties may be adversely affected if material is stored in temperatures below
    40 °F (5 °C).
  • 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.
  • King® RS-D2 MF and King® RS-D2 ST should not be applied when ambient, substrate, and material temperatures are below 40 °F (5 °C).
  • For adverse temperatures, follow ACI recommendations for Cold / Hot Weather Concreting.
  • King® RS-D2 MF and King® RS-D2 ST recommended minimum inside diameter of shotcrete hoses should be 2 in (50 mm).  

  

Contact your Sika STM Technical Representative for more information.

CURING TREATMENT

Good curing conditions are beneficial to optimizing the 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.

Documents