Sikacrete®-101 Standard CZ

• CE Marking and Declaration of Performance in accordance with EN 1504-3. 

Pre-mixed powder containing Portland cement, graded quartz sand and synergistic admixtures. 

12 months

Store properly in original unopened, sealed and undamaged packaging in dry and cool conditions. 

D_max: ~4 mm

NOTE: Determined at 28 days. 

Minimum application thickness is 10 mm. 

Maximum thickness of the vertical layers is usually around 70 mm. With reinforcement / mesh, 100 mm layer thicknesses can be achieved.

+5°C minimum / +30°C maximum

~30 minutes at +20°C

~2.5 kg/m²/mm

NOTE: Consumption depends on the application method and working conditions. 

The concrete substrate must be sound and have a minimum bond strength of 1.5MPa and a compressive strength greater than 25MPa. The surface must be dry, free of dust, dirt, grease and oil, with no loose material. Laitance paints or other surface treatment agents must be completely removed. A prerequisite for a good bond between the substrate and repair mortar is an appropriate roughness of the surface. Roughness should be at least 1 mm (test based on the sand patch method according to RVS 15 346, Sheet 1). Suitable methods for substrate preparation is high pressure jetting or sand blasting. Other methods such as grinding, etc., require subsequent blasting to remove any remaining faults in the structure of the substrate. The substrate must be pre-wetted for at least 12 hours prior to application to ensure saturation and prevent suction. Remove all excess  / standing water prior to application. Rust, scale, weak mortar or concrete, dust and other loose and deleterious material which reduces bond or contributes to corrosion shall be removed. In case of doubt, a sample area should be used to confirm suitability / compatibility.

The quantity of water is ~2.5 litres per 25 kg of powder - set the machine to this level for the application of the repair mortar. The consistency of the mortar is then fine-tuned by the speed of feeding the dry powder from the mixing machine into the hose and the amount of water added in the nozzle. The nozzleman should be experienced applying dry spray mortars. 

Sikacrete®-101 Standard CZ is sprayed onto a prepared and pre-wetted surface. The application thickness on vertical surfaces is usually 30 to 70 mm, and up to 100 mm with reinforcement / mesh. Immediately after the spraying is completed, the surface is smoothed with a steel trowel. Where additional levelling of the substrate is required, a thinner layer of Sikacrete®-101 Standard CZ is hand applied in a thin layer to the freshly sprayed surface. Do NOT apply fallout / rebound material on the ground to the surface. 

Sikacrete®-101 Standard CZ cures with low shrinkage under normal weather conditions. In strong sunlight and / or wind, it must be kept moist and should be protected against rapid drying. To achieve the high values of the physical properties, it is essential to have a professional operating with a suitable spraying machine, and adequately cure the final surface.

Clean all tools and application equipment with water immediately after use. Hardened / cured material can only be mechanically removed.