Calcium chloride in construction - a concrete setting accelerator

Why does concrete set slower at low temperatures?

Cement hydration slows down dramatically below 10°C. Below 0°C, water freezes, preventing it from setting and causing destruction of the concrete structure.

Mechanism of action of CaCl₂

CaCl₂ lowers the freezing point of mixing water and accelerates cement hydration reactions. Concrete with CaCl₂ reaches strength 2-3 times faster than without the addition.

Dosage according to PN-EN 934-2 standard

• Standard: 1–2% CaCl₂ in relation to the weight of cement
• Maximum: 3%
• 30% solution: easier to dose

Restrictions on use

• Reinforcement: may accelerate steel corrosion - do not use in unprotected reinforced concrete
• Prestressed concrete: standards prohibit the use of CaCl₂

Order CaCl₂ for construction

Saltiwa supplies CaCl₂ in the form of granules and solutions for construction companies and concrete plants. Contact us for a B2B offer.