Spray Applied - Sikacrete®-213 F

Wet sprayed fire protection mortar

Cement-based pre-bagged, dry mix, fire protection mortar for wet sprayed application especially for concrete structures in tunnel construction as a fire barrier.

• Pre-bagged dry mortar mix for application by the wet spray process
• Minimal layer thickness to meet specifications
• Easy to apply
• 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
• > 240 minutes fire resistance achievable
• Minimal rebound

Usage

Sikacrete®-213 F is used for concrete and reinforced concrete 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 F 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
• 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
• > 240 minutes fire resistance achievable
• Minimal rebound

Packaging

26.5 lb (12 kg) bag

Color

Gray powder

Product Details

Sustainability / Certifications / Approvals

APPROVALS / STANDARDS

4 hour fire resistance over SikaWrap® and CarboDur FRP composites

• UL File BXUV.N856 and ULC File BXUVC.N813 - beam strengthened with CarborDur plates and SikaWrap® 103C/230C fabrics
• UL File BXUV.N857 and ULC File BXUVC.N814 - beam strengthened with SikaWrap® 103C/100G/A30G fabrics
• UL File BXUV.X855 and ULC File BXUVC.X826 - Column strengthened with SikaWrap® 103C fabric

• Independently assessed by UL (ULC) to CAN/ULC-S101, Standard Methods of Fire Endurance
• Tests of Building Construction Materials; and ASTM E-119 (NFPA 251) Standard
• Test Methods of Fire Tests of Building Construction and Materials
• Fire-resistance ratings tested in accordance with ANSI/UL 263

Product Information

Shelf Life

12 months from date of production if stored properly in original, unopened and undamaged sealed packaging.

Storage Conditions

Store dry at 40-95 °F (4-35 °C)

Protect from moisture. If damp, discard material

Density

73 lb/ft³ (1.17 kg/L) (Fresh applied sprayed)

Technical Information

Compressive Strength

290 psi (2.0 MPa)

Freeze Thaw De-Icing Salt Resistance

In order to guarantee resistance to frost, freeze thaw cycles and de-icing salts, the Salt Resistance surface of the mortar must be treated with Sikagard®-Wallcoat T.

Thermal Conductivity

0.23 W/mK at 10 °C

Application

Application Information

Mixing Ratio

2.6-3.4 gal (10-13 L) per bag

Layer Thickness

Max. 1.5" (38 mm)

Wire mesh reinforcement required when applied in thicknesses greater than 1.5" (38 mm) and for overhead applications.

Ambient Air Temperature

41-95 °F (5-35°C)

Substrate Temperature

41-95 °F (5-35 °C)

Consumption

Coverage

6 ft² at 1.5" (0.56 m² at 38 mm) per bag

(Coverage figures do not include allowance for surface profile and porosity or material waste)

Application Steps

MIXING

• Pour 2.6 gal. (10 L) of potable water into a suitably sized and clean mixing container.
• Add a bag of powder while slowly mechanically mixing, using a 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 in to 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 3.4 gal.(13 L).
• 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 F is applied by the wet-spray, dense stream or wet-spray, thin stream method (for vertical/overhead surfaces).
• Application equipment should include wet-spray, screw pump systems such as an Aliva® rotor system, Putzmeister®, Bunker® spray concrete system or similar.
• Where there is a risk of vibration or mechanical damage to the surface exists and for overhead applications, the use of a light wire mesh reinforcement is recommended in order to prevent any debonding of the mortar layer.
• Position spray nozzle 18 - 24" (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.
• The surface of the freshly applied mortar can be finished for up to one hour after application dependent on the temperature and humidity.
• When application requires an aesthetic or protective coating, contact Sika’s Technical Services for guidance.

CURING TREATMENT

• As per ACI 308 recommendations for Portland cement concrete, curing is required.
• Moist cure with wet burlap and polyethylene, a fine mist of water or a water based* compatible curing compound.
• Curing compounds adversely affect the adhesion of following lifts of mortar, leveling mortar or protective coatings.
• Moist curing should commence immediately after finishing.
• Protect freshly applied mortar from direct sunlight, wind, rain and frost.

* Pretesting of curing compound is recommended.

CLEANING OF TOOLS

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

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