![]() ![]() Where the thickness of the seal is built up using multi layers, the structural strength of the seal may be reduced. In all loadbearing situations the QF2 Fire Protection compound thickness must be at least 100mm.Īs the load bearing performance particularly in un-reinforced situations is dependent on compressive membrane action against the concrete slab edge or other rigid boundary, it is essential to check that this is vertical, before commencing installation. Consideration may also be given to the use of a permanent shuttering system. Where the barrier is required to provide a load bearing capability, consideration should be given to structural support, such as reinforcing bars. All combustible materials such as plywood, must be removed, after the QF2 Fire Protection Compound has set. If retained, we recommend that the shuttering is at least cut back around the service so that the fire seal is visible and exposed to fire. Once the QF2 Fire Protection Compound has cured, the shuttering can be removed so that the fire seal is visible. The QF2 Fire Protection Compound can then be poured on top of the MW Shuttering Slab. Once the MW Shuttering Slab is securely fitted, any necessary closure devices required around the service penetrations such as QWW Intuwraps to plastic pipes may be installed. The MW Slab should be positioned towards the bottom of the hole to allow the correct depth of the QF2 Fire Protection Compound to be installed on top – normally a minimum of 100mm but this should be checked in accordance with the test evidence and recommendations.Ĭonsideration should be given to any necessary temporary or permanent support that may also be required. ![]() It is recommended that appropriate shuttering such as MW Mineral Wool Slabs should be cut to suit the penetration slightly oversize and around all penetrating services so when installed it will be a good friction fit. Installation Vertical openings through floors: It may be built up further within two or three hours where large barriers are required. The setting time for QF2 depends on the atmospheric temperature. QF2 Fire Protection Compound expands slightly on curing (0.1%), to form a rigid seal and will provide a load bearing seal at 100mm thick. QF2 can be used in conjunction with other QuelStop system products such as the QWW and QuelCoil Intuwraps and the QWR fire collar. QF2 is readily mixed with water in a bucket or concrete mixer, to consistencies that range from pourable, stiff or suitable to be trowelled. The QF2 Fire Protection Compound may be used in rigid walls and floors. The wet mix will remain useable for approximately 45-60 minutes depending on batch size, water content and temperature. Recommended mixes (Dry Powder / Water Ratio): 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. 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.įor further information, please refer to the Material Safety Data Sheet, available on request. QF2 Fire Protection Compound contains gypsum plaster and natural, or heat processed aggregates. Shelf life, in an unopened bag is typically 12 months. QF2 is supplied in 20kg bags which must be stored in dry conditions. 4 x 20kg sacks of QF2 Fire Protection Compound. ![]() One square metre at 100mm thickness requires approx. Relationship between Workability and compressive strength: Consistency R’w (C Ctr) (dB): 47 (1) Structural Properties Mortar at 100mm thickness: QF2 Fire Protection Compound The QF2 Fire protection compound achieved the following acoustic insulation ratings: Physical PropertiesĮxpansion on setting (%): 0.1 Acoustic Insulation Performance Once cured, QF2 will provide a load bearing and fire rated seal. The QF2 Fire Protection Compound is mixed on site with water and can be applied to both floors and walls. 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. ![]()
0 Comments
Leave a Reply. |