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RockStab 20 – High-Performance Set Retarding Admixture

RockStab 20 is a powerful liquid set retarder designed to control the hydration process of cement, extending concrete workability and preventing premature setting. Ideal for tunneling, mining, mass concrete pours, and hot-weather concreting, it provides contractors with reliable control over setting times while ensuring full strength development. Its non-chloride formulation guarantees compatibility with reinforcement steel and safe, consistent performance across a variety of demanding construction environments.

Features & Benefits

Key Features

  • Liquid set retarding admixture – Extends workability and delays initial set.

  • Non-chloride formulation – Safe for use with reinforcement and prestressed concrete.

  • Adjustable dosage – Tailored performance based on mix design, cement type, temperature, and project requirements.

  • Versatile applications – Suitable for tunnelling, mining, mass pours, and hot-weather concrete.

  • Compatible with other admixtures – Can be combined with plasticisers, accelerators, and stabilisers.

  • Effective in sprayed and cast concrete – Provides stable performance across applications.

  • Flexible packaging – Available in 20 L, 210 L, 1000 L, and bulk containers.


Benefits

  • Reliable hydration control – Prevents premature setting and ensures consistent workability.

  • Improved placement efficiency – Provides extended open time for transporting and placing concrete in challenging environments.

  • Cost and time savings – Reduces the risk of wasted loads and rejected concrete.

  • Safer reinforcement protection – Non-chloride chemistry avoids steel corrosion risks.

  • Greater project flexibility – Adapts to changing site conditions, weather, and mix requirements.

  • Optimised performance in hot climates – Prevents flash setting and maintains workable consistency.