Sikacrete®-213 FMY
Wet sprayed fire protection mortar
Cement-based pre-bagged, dry mix fire protection mortar for wet sprayed application especially in tunnel construction. Sikacrete®-213 FMY has approval for use up to 4 hours fire protection.
- Pre-bagged dry mortar mix for application by the wet spray process
- Minimal layer thickness to meet specifications
- Easy to apply
- It does not contribute to the formation of smoke or toxic fumes in fire
- Light weight, low density
- The sprayed mortar surface can be finished by trowel or wood float
- Minimal rebound
Usage
Sikacrete®-213 FMY is used for concrete, reinforced concrete, carbon fiber and steel structures exposed to fire hazards. It contains phyllosilicate aggregates, which are highly effective in resisting the heat of hydrocarbon fires. The thickness of the fire protection layer to be applied depends on the specified fire resistance. The outstanding properties of Sikacrete®-213 FMY allow greatly reduced thickness of the fire protection layer required.Advantages
- Pre-bagged dry mortar mix for application by the wet spray process
- Minimal layer thickness to meet specifications
- Easy to apply
- It does not contribute to the formation of smoke or toxic fumes in fire
- Light weight, low density
- The sprayed mortar surface can be finished by trowel or wood float
- Minimal rebound
Packaging
12 kg bag on pallet of 54 bags
Colour
Grey powder with aggregates
Product Details
APPROVALS / STANDARDS
Complies to BS 476:Part 21:1987
Shelf Life
6 months from date of production
Storage Conditions
Store in undamaged and unopened, original sealed packaging in cool and dry conditions
Density
Powder | ~0.57 kg/l |
Fresh applied | ~1.2 kg/l (sprayed) |
Applied after 28 days | ~0.6 kg/l (sprayed) |
Compressive Strength
~2.0 N/mm²
Thermal Conductivity
~0.23 W/m·K at +10 °C
Application
Layer Thickness
- Minimum 15 mm without reinforcement
- Minimum 25 mm with reinforcement
Ambient Air Temperature
+5 °C min. / +35 °C max.
Substrate Temperature
+5 °C min. / +35 °C max.
Consumption
~6 kg/m² for a layer thickness of 10 mm
MIXING
Pour 10.9 L of potable water into a suitably sized and clean mixing container. Add 1 bag (12 kg) Sikacrete®-213 FMY powder slowly while mechanically mixing, using a heavy duty, low speed drill (300–450 rpm) with a mud mixer or other suitable paddle. Mix to a uniform consistency for a minimum of 3 minutes. Mixing can also be done in a mortar mixer setup for a direct feed into wet shotcreting equipment, maintaining the same mixing requirements as when mixing with a drill. Once mixed, if a wetter consistency is required, increase the water content up to a maximum of 13.5 L.
Note: Do not overwater as excessive water will cause severe bleeding, retardation and will reduce the strength and performance of the mortar. Extending (“bulking”) the mortar with additional aggregate or adding any other material into the mix is not permitted as this may impact the fire resistance of the mortar.
APPLICATION
At the time of application, the concrete substrate must be SSD (saturated surface dry) with no surface water visible. FRP Composite and steel surfaces should be dry and clean. Resin surfaces must have an acceptable contact surface to which the mortar will adhere. Sikacrete®-213 FMY is applied by the wet-spray, dense stream or wet-spray, thin stream method (for vertical/overhead surfaces). Position spray nozzle 18–24 inches (450–600 mm) perpendicular to the surface. This will minimize rebound, create a smoother finished surface and will flatten out when applied at the proper pressure. Allow Sikacrete®-213 FMY to set sufficiently before finishing or scraping to the desired lines. When application requires an aesthetic or protective coating, contact Sika’s Technical Services for guidance.
Application equipment should include wet-spray, screw pump systems such as an Aliva® rotor system, Putzmeister®, Bunker® spray concrete system or similar.
To achieve the optimum physical characteristics, the spray nozzle must be handled by a trained and experience operator.
Where a risk of vibration or mechanical damage to the surface exists, the use of light wire mesh reinforcement is recommended in order to prevent any debonding of the mortar layer.
CURING TREATMENT
To achieve full potential of any cement based material, curing is essential. This can be carried out with the application of a curing compound such as Antisol®-E or with other curing practices such as covering with polythene sheets or damp hessian for 3 days.
CLEANING OF TOOLS
Clean all tools and application equipment with water immediately after use. Hardened or cured material can only be removed mechanically.