Flame retardant vs fire resistant cables – what's the difference?

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Composition

The QF2 Fire Protection Compound is a non-combustible compound manufactured from lightweight graded fire resisting aggregates, in organic binders and high-quality gypsum cements to give excellent fire resistance, strength and versatile workability.

The QF2 Fire Protection Compound is mixed on site with water and can be applied to both floors and walls. Once cured, QF2 will provide a load bearing and fire rated seal.

Physical Properties

Colour: Pink

Density loose bulk (kg/m3): 650

Density wet cast (kg/m3): 1300 – 1400

Density over dry (kg/m3): 850 – 950

Setting time (mins): 60

Expansion on setting (%): 0.1

Acoustic Insulation Performance

The QF2 Fire protection compound achieved the following acoustic insulation ratings:

Mortar at 100mm thickness: QF2 Fire Protection Compound

R’w (C; Ctr) (dB): 47 (1)

Structural Properties

Relationship between Workability and compressive strength:

Consistency 24 hours 28 days Pourable 2.5 N/mm2 5 N/mm2 Plastic 4 N/mm2 8 N/mm2 Stiff 5 N/mm2 10 N/mm2

Thermal Conductivity and U Values

Material: QF2 Fire Protection Compound

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Thermal Conductivity ‘K’ (w/moc): 0.21

Thickness (mm): 100

Thermal Resistance  ‘R’ (t/k): 0.48

U Value I / ‘R’: 2.1

Yield

One square metre at 100mm thickness requires approx. 4 x 20kg sacks of QF2 Fire Protection Compound.

Packaging & Storage

QF2 is supplied in 20kg bags which must be stored in dry conditions. Shelf life, in an unopened bag is typically 12 months.

Health & Safety

QF2 Fire Protection Compound contains gypsum plaster and natural, or heat processed aggregates. Appropriate protective clothing, including gloves, dust mask, safety glasses, should be worn, especially during mixing, to guard against dust inhalation, eye damage and skin irritation.

For further information, please refer to the Material Safety Data Sheet, available on request.

Mixing

QF2 is mixed on site with clean water in a plastic container by slowly adding the dry powder to the water while stirring by hand or power mixer to ensure a smooth lump-free mix.

Recommended mixes (Dry Powder / Water Ratio):

By Volume By Weight Pourable / Floors 2 1/2 : 1 1.3 : 1 Stiff / Walls 3 : 1 1.9 : 1

The wet mix will remain useable for approximately 45-60 minutes depending on batch size, water content and temperature.

Waterproofing

QF2 Fire Protection Compound is not waterproof and as it is mostly gypsum based will absorb water if exposed. It can potentially be treated with a 2-part epoxy paint in order to offer some waterproofing but it must be fully dried before application and we recommend a trial is carried out before application to check compatibility and adhesion.

Are you interested in learning more about fire resistant cable compound? Contact us today to secure an expert consultation!

View NBS Specification