Product Data Sheet Show all documents

King® AF-D1

ACCELERATED SHOTCRETE OR CONCRETE MIX

King® AF-D1 is an accelerated shotcrete or concrete mix containing special, high-alumina cement and silica fume. It is designed to produce superior heat and thermal-cycling resistant characteristics.

1. Resistance to high temperature and thermal-cycling
The high performance cement used in this mix provides improved resistance to thermal shock and thermal cycling for areas with exposure to extremely high temperatures.
2. Abrasion resistance
The properties provided by the special high performance cement used in King® AF-D1 provide abrasion resistance 2 times higher than similar mixes using normal Portland cement.
3. Early strength development
King® AF-D1 reaches initial set after 2-3 hours. However, after this period of time strength gain develops rapidly providing 24 hour compressive strength results similar to 28 day results of mixes using normal Portland cement.
Product Data Sheet Show all documents

Usage

  • Furnace linings
  • Chimney linings
  • Furnace foundations
  • Ore-pass linings
  • Other high temperature and thermal-cycling areas
 

Advantages

1. Resistance to high temperature and thermal-cycling
The high performance cement used in this mix provides improved resistance to thermal shock and thermal cycling for areas with exposure to extremely high temperatures.
2. Abrasion resistance
The properties provided by the special high performance cement used in King® AF-D1 provide abrasion resistance 2 times higher than similar mixes using normal Portland cement.
3. Early strength development
King® AF-D1 reaches initial set after 2-3 hours. However, after this period of time strength gain develops rapidly providing 24 hour compressive strength results similar to 28 day results of mixes using normal Portland cement.

Packaging

30 kg (66 lb) triple-lined bag, 1000 kg (2200 lb) FIBC* or 1500 kg (3300 lb) FIBC polywrapped on wooden pallets. Special packaging for marine shipping is available upon request.

*Flexible Intermediate Bulk Container

Product Details

Product Information

Shelf Life

12 months in original packaging, unopened

Storage Conditions

Store dry, ensuring that product is not exposed to rain, condensation or high humidity.
Technical Information

Compressive Strength

1 day

40 MPa (5 800 psi)

3 days

45 MPa (6 525 psi)

7 days

48 MPa (7 000 psi)

28 days58 MPa (8 400 psi)

Temperature Resistance

HEAT & THERMAL-CYCLING RESISTANCE

Withstands temperatures up to 1000 °C (1832 °F)

 

Application

Consumption

Yield

30 kg (66 lb) bag: Approx. 0.014 m3 (0.5 ft3)

1000 kg (2205 lb) FIBC: Approx. 0.45 m3 (16.5 ft3)
Application steps

SUBSTRATE PREPARATION

All surfaces to be in contact with King® AF-D1 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 concrete providing a roughened surface and a minimum of 20 mm (¾ in) clearance behind any corroded reinforcing steel. The perimeter of the repair area should be sawcut a minimum of 20 mm (¾ in). Clean the area to be repaired with potable water, leaving the concrete saturated but free of standing water (SSD).

APPLICATION

Apply in accordance with the ACI 506 “Guide to Shotcrete” publication.

CURING TREATMENT

Curing is essential to optimize physical properties of the shotcrete and minimize plastic shrinkage. King® AF-D1 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 two (2) coats of 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.

CLEAN UP

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

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