BIOKIL Anti-Freeze Rapid Set – Frost Protection & Rapid Set Admixture (5L & 25L)

The Biokil Anti-Freeze Rapid Set is a high-performance liquid admixture designed to accelerate the setting time of cement-based mortars, renders, screeds, and concrete while providing frost protection during curing. Formulated for cold weather construction and repair work, it enables faster finishing times and improved workability even in sub-zero temperatures.

Containing calcium chloride, this powerful admixture helps protect wet mortar and concrete from frost damage during the critical setting period while optimising curing performance and mould turnaround times.

Key Features & Benefits

• Accelerates setting time – reduces waiting and finishing times
• Frost protection down to -8°C – protects wet mortar during curing
• Improves cold weather working – ideal for winter construction projects
• Optimises mould usage – faster turnaround for concrete and screed work
• Suitable for multiple cement-based materials – versatile site use
• Easy liquid application – simple addition to gauging water
• Can be used as emergency plugging aid – when mixed neat with cement

Typical Applications

• Bricklaying mortars (non-metal reinforced)
• Floor screeds
• Internal and external rendering
• General concrete work (non-structural)
• Cold weather masonry work
• Emergency repair plugging applications

How It Works

Biokil Anti-Freeze Rapid Set accelerates the hydration process within cement-based mixes, significantly reducing setting times and helping materials cure effectively in cold weather conditions.

Its frost-protection properties reduce the risk of freezing during the critical curing stage, allowing work to continue in temperatures as low as -8°C. :contentReference[oaicite:0]{index=0}

Application Instructions

• Add 2.5–5 litres per 50kg of cement depending on the required level of acceleration and ambient temperature
• Add directly into the mixing drum alongside gauging water
• Adjust water content accordingly
• Ensure all materials are free from ice before use
• Mix temperature before placement should not be lower than 4°C
• Cover concrete or mortar after placement until sufficient strength is achieved or temperatures rise above freezing

Typical Dosage Guide

Ambient Temperature	Dosage Rate
Down to -4°C	2.5L per 50kg cement
Down to -8°C	2.5–5L per 50kg cement

Suitable Mixes & Applications

Mortars: Suitable for non-metal reinforced bricklaying mortars and masonry applications during cold weather.

Screeds: Helps accelerate curing of floor screeds and granolithic toppings while improving frost resistance.

Rendering: Suitable for internal and external cement-based renders exposed to cold conditions.

Emergency Plugging: Can be mixed neat with Ordinary Portland Cement and used immediately as a rapid repair plugging aid.

Limitations

• Do not use with High Alumina Cement
• Do not overdose
• Do not mix with other additives in the same gauging water
• Not suitable for structural concrete
• Do not use where brick ties are present
• Do not use weak mixes during cold weather

Technical Information

Feature	Specification
Appearance	Clear Green Liquid
Active Content	20–30% Calcium Chloride w/v
Specific Gravity (20°C)	Approx. 1.2
pH	9–11
Chloride Ion Content	Approx. 0.8% at 5L per 50kg cement
Frost Protection	Down to -8°C
Available Sizes	5L & 25L
Storage Temperature	5°C to 40°C
Shelf Life	Minimum 2 years unopened

Storage & Safety

Store in original unopened containers between 5°C and 40°C. Protect from frost and direct sunlight.

This product may irritate eyes and skin. Wear suitable PPE including gloves and eye protection during use. Keep away from children and animals.

Why Choose Biokil Anti-Freeze Rapid Set?

Biokil Anti-Freeze Rapid Set provides a practical and reliable solution for maintaining productivity during cold weather construction. By accelerating curing while protecting wet mortar and concrete from frost damage, it allows work to continue safely and efficiently in winter conditions.

Ideal for builders, renderers, screeders, and masonry professionals, it helps reduce delays while improving curing performance and site productivity.