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RockAccel 60 – High-Performance Alkali-Free Accelerator for Sprayed Concrete

RockAccel 60 is a liquid, alkali-free accelerator designed for tunneling, mining, and slope stabilization projects where speed, strength, and durability matter most. With adjustable dosing to achieve precise setting and hardening times, it ensures rapid progress, reliable early-age strength, and enhanced long-term performance. Formulated for modern wet-mix spraying, RockAccel 60 minimizes dust, reduces rebound, and provides safer, more efficient application. It enables thick concrete linings in a single sequence, even overhead, while maintaining compatibility with silica fume, fibres, and stabilizers. Meeting EFNARC standards for sprayed concrete, it is trusted for both temporary and permanent ground support in the toughest environments.
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Heavy-duty intermediate bulk container (IBC) for chemical storage and industrial use.

Features & Benefits

Key Features

  • High-performance alkali-free liquid accelerator – Designed for wet-mix sprayed concrete.

  • Fast and adjustable setting times – Initial set in <2 minutes; final set in <6–8 minutes.

  • Superior strength development – Continuous early strength gain and long-term durability.

  • Supports high-performance mix designs – Works best with w/c ratio <0.45 (or <0.40 for extreme strength).

  • Excellent overhead spraying – Allows for thick linings in one construction sequence.

  • Low dust, low rebound – Ensures cleaner application and reduced material loss.

  • Safe handling properties – Non-aggressive chemistry, improving worker conditions.

  • Broad compatibility – Effective with silica fume, fibres, stabilisers, and plasticisers.

  • Flexible pump compatibility – Works with mono and peristaltic pumps.

  • Durable storage – 6-month shelf life if properly stored and agitated before use.

Benefits

  • Accelerates project progress with rapid setting and thick-layer capability.

  • Ensures high-quality sprayed concrete with strong, durable results.

  • Improves efficiency by reducing rebound and material waste.

  • Enhances worker safety with minimal dust and a non-aggressive formulation.

  • Greater design flexibility through compatibility with advanced concrete additives.

  • Adaptable performance – dosage can be fine-tuned for project-specific requirements.

  • Reliable support in tough environments – ideal for tunnelling, mining, slope stabilisation, and TBM grout applications.