Product Data Sheet Safety Data Sheet Show all documents
King® MS-D1 UG

King® MS-D1 UG

SHOTCRETE MATERIAL FOR DRY-MIX PROCESS FOR UNDERGROUND APPLICATIONS

King® MS-D1 UG is a pre-blended, prepackaged, dry-process, shotcrete material containing Portland cement, silica fume, set-time accelerator, blended aggregates and other carefully selected components. It has greatly enhanced shooting characteristics providing reduced setting times and rapid strength development.

  • Rapid early age strength development
  • Improved performance in presence of running water
  • Improved adhesive and cohesive plastic properties
Product Data Sheet Safety 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

  • Rapid early age strength development
  • Improved performance in presence of running water
  • 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
  • Improved resistance to water wash-out
  • Improved resistance to sulphate attack
  • Low permeability
  • Low shrinkage  
OPTIONAL FEATURES & BENEFITS        ACCELERATOR LEVEL     Product Dosage of accelerator King® MS-D1 UG level 1 King® MS-D1 UG2 level 2 King® MS-D1 UG3level 3
    EXAMPLE:
    For King® MS-D1 UG with Gradation No. 1, the name of the product would be King® MS-D1 UG G1

    Packaging

    • 30 kg (66 lb) triple-lined bags
    • 1 000 kg (2 205 lb) FIBC

    *Custom packaging is available to suit specific project requirements

    Product Details

    Sustainability / Certifications / Approvals

    APPROVALS / CERTIFICATES

    GRADATION

    • By default King® MS-D1 UG is blended to meet ACI 506 “Guide to Shotcrete”, Table 1.1, Gradation No. 2
    • King® MS-D1 UG G1 is blended to meet ACI 506 “Guide to Shotcrete”, Table 1.1, Gradation No. 1
    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. Physical properties 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

    Compressive Strength

    		ASTM C 116 (MODIFIED)

    King® MS-D1 UG

    King® MS-D1 UG2

    King® MS-D1 UG3

    4 hours

    -

    1 MPa

    (150 psi)

    5  MPa 

    (725 psi)

    8 hours

    5  MPa 

    (725 psi)

    6 MPa 

    (870  psi) 

    8 MPa 

    1150 psi) 

    12 hours

    7 MPa

    (1015 psi)

    8 MPa 

    (1150 psi)

    10 MPa 

    (1500 psi)

    ASTM C 1604

    King® MS-D1 UG

    King® MS-D1 UG2

    King® MS-D1 UG3

    1 day

    21 MPa

    (3000 psi)

    21 MPa

    (3000 psi)

    21 MPa

    (3000 psi)

    3 days

    28 MPa

    (4060 psi) 

    28 MPa

    (4060 psi)

    28 MPa

    (4060 psi)

    7 days  

    32 MPa

    (4640 psi)

    32 MPa

    (4640 psi)

    32 MPa

    (4640 psi)

    28 days

    42 MPa

    (6000 psi)

    42 MPa

    (6000 psi)

    42 MPa

    (6000 psi)

    Tensile Strength in Flexure

    ASTM C 78

    28 days

    6.8 MPa (985 psi)

    Porosity

    BOILED ABSORPTION

    ASTM C 642

    6.0% 

    MAXIMUM VOLUME OF PERMEABLE VOIDS

    ASTM C 642

    14.0%

    Application

    Application Information

    Setting Time

    King® MS-D1 UG

    King® MS-D1 UG2

    King® MS-D1 UG3

    Initial 

    20 minutes

    10 minutes

    5 minutes

    Final

    45 minutes

    25 minutes

    10 minutes
    Consumption

    Yield

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

    * Yield in service may slightly vary according to projects conditions
    Application steps

    SURFACE PREPARATION

    All surfaces to be in contact with King® MS-D1 UG 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® MS-D1 UG in accordance with the ACI 506 “Guide to Shotcrete” publication.

       

    OPTIMUM PERFORMANCE 

    • King® MS-D1 UG should not be applied when ambient, substrate and material temperatures are below 5 °C (40 °F).

    CURING TREATMENT

    Good curing conditions are beneficial to optimizing physical properties of King® MS-D1 UG. 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”.

    CLEAN UP

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

     

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