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JBS ACTIVA AFA-L

JBS ACTIVA AFA-L

"Accelerate Excellence in Concrete Performance with JBS ACTIVA AFA-L."

Modified Liquid Alkali-Free Accelerator

Product Description

JBS ACTIVA AFA-L is a liquid alkali-free accelerator formulated for quick-setting sprayed cementitious and concrete work. It ensures fast setting without compromising strength, making it ideal for applications requiring both efficiency and durability.

Benefits

  • Easy handling and efficient addition to sprayed concrete.
  • Minimizes dust, improving worker safety and work environment.
  • Reduces handling precautions, enhancing operational economics.

Applications

Recommended for:

  • Temporary and permanent rock support in tunnels and mining.
  • Poor ground condition stabilization.
  • Slope stabilization.
  • Cementitious grout acceleration in TBM tunnel linings, foam concrete backfill, and cement grout injection.
  • Rock support and wet shotcrete mixtures.

 

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Advantages

  • Non-Alkali Reactive: Free of active caustic alkalis like sodium and potassium ions, preventing alkali-aggregate and alkali-lime reactions.
  • Enhances Concrete Soundness: Ensures strong and durable sprayed concrete.
  • Efficient Application: Improves overhead spray and reduces rebound due to better adhesion on rock surfaces.
  • Strength Retention: Develops high early strength without compromising long-term strength.
  • Corrosion Resistance: Chloride-free formulation prevents steel reinforcement corrosion.
  • Safe Handling: Non-caustic composition ensures safer working conditions.

Method of Application

  1. Dosage:
    • Typically ranges from 3% to 10% of the binder weight, depending on concrete, air, and substrate temperature, as well as cement reactivity.
    • Avoid overdosing (>10%), which may reduce final strength.
  2. Dispensing and Mixing:
    • Add JBS ACTIVA AFA-L to the nozzle for application.
    • Ensure the use of compatible dosing pumps to maintain a constant and adequate dosage.
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