ZF / Cement mortar for masonry with antifreeze additive

• For work at temperatures up to -10°C
• Cement based
• Strength class M10
• For masonry, plastering and repair works
• Plastic during rubbing
• Excellent mechanical and climatic resistance
• Can be used for masonry of chimneys
• Grey colour
• High hydrophobicity and water vapor permeability

Processing

• The base surface must be firm, stable and without cracks
• Blocks or bricks must be clean and dry, not iced or frozen
• Clean the surface from loose and/or separable layers
• Particularly dense and/or smooth surfaces should be treated with an abrasive material
• Highly absorbent surfaces must be primed with SAKRET BG primer or SAKRET UG primer (diluted 1:3)
• Especially smooth concrete surfaces should be primed with SAKRET QG primer
• Mix SAKRET ZF in a clean container with cold water (use warm water in winter conditions) until a homogeneous mass without lumps is formed
• It is recommended to use a mixer with 600 turns per minute
• The temperature of the construction mixture at the time of masonry should not be lower than +8⁰C
• Constructions must be covered immediately after the work is completed, first with waterproofing and then with heat-insulating material, for example - with polyethylene film and mineral wool plates
• The temperature of any base or formwork must be such that the concrete does not freeze before reaching the critical or calculated temperature during hardening min. +5°C
• Mortars with a class not lower than M5 can be used
• All bricks and blocks must be cleared of snow and ice before laying
• It is recommended to perform a thermal calculation of the structure to be concreted (concrete cooling time, required thermal insulation properties, concrete setting temperature)
• Above +5°C, antifreeze additives act as a hardening accelerator
• The technical data refers to a temperature of +20°C and 50% relative air humidity. Lower temperature increases, higher - decreases the specified values
• During the hardening phase of the mortar, protect from the sun, drafts and excessively high temperatures (>30°C)
• Protect fresh adhesive from rain and too rapid drying
• When the mortar has started to bind, no more water can be added!
• Wash containers and tools with water immediately after processing the mortar
• Hardened mortar can only be removed mechanically
• Contains cement, reacts alkaline
• Protect skin and eyes, follow technical instructions. If the mortar gets into the eyes, rinse with a large amount of water, if necessary, consult a doctor
• Protect the packaging from weather conditions, store on wooden pallets, in a cool and dry place, cover torn packaging immediately

Packing

• 25 kg / paper bags / 48 bags on a pallet
• 10,000 kg - 20,000 kg / mobile transport silo

Tehnical data