Carboline Pyrocrete 241 HD

0182S1NL

An ultra high density cementitious fireproofing designed for the fire protection of exterior and interior structural steel. It provides both hydrocarbon and cellulosic fire protection for structural steel and can also be used to upgrade the fire resistance of existing concrete.

Top Features

  • Heavy duty, ultra high density formulation
  • Highest durability and toughness on the market
  • UL 1709 hydrocarbon fire rated up to 4 hours
  • ISO 22899-1 jet fire rated up to 2 hours
  • ASTM E119 cellulosic fire rated up to 4 hours
Size
Finish
£64.70
VAT excluded

£77.64 Tax incl.
Quantity

Description

Carboline Pyrocrete 241 HD is an ultra high density cementitious fireproofing designed for the fire protection of exterior and interior structural steel.

A 70 lb./ft³ (1,121 kg/m³) density, Portland cement based, cementitious fireproofing. It provides both hydrocarbon and cellulosic fire protection for structural steel and can also be used to upgrade the fire resistance of existing concrete. Recommended areas of application include refineries, petrochemical, pharmaceutical facilities, pulp and paper mills, offshore platforms, nuclear and conventional power plants, factories, warehouses, institutional and biomedical facilities.

Pyrocrete 241 HD neither promotes nor prevents corrosion. The fireproofing should not be considered as part of the corrosion protection system. For applications where primers are required, use a Carboline approved, alkaline resistant primer. Pyrocrete 241 HD must meet minimum UL bond strength criteria for contour applications where primers are used. Contact the Carboline Fireproofing Technical Service for further information and approved primers.

Not recommended for use as a refractory cement or where continuous operating temperatures exceed 200°F (93°C).



Top Features & Benefits


  • Heavy duty, ultra high density formulation
  • Highest durability and toughness on the market
  • UL 1709 hydrocarbon fire rated up to 4 hours
  • ISO 22899-1 jet fire rated up to 2 hours
  • ASTM E119 cellulosic fire rated up to 4 hours
  • Cryogenic protection against LNG spills and immersion exposures
  • Resistant to 3 bar blast overpressure
  • Hose stream resistant
  • Tolerant to wide range of climates
  • Lightweight – one-fifth the weight of concrete for equal fire protection
  • Ideal for onsite and offsite application
  • Easy application by spray or trowel
  • Nonflammable – during or after application
  • Chloride and sulfide free – no special priming required
  • Asbestos-free – complies with EPA and OSHA regulations
  • Non-friable – high impact strength



Preparation & Application


Before applying Pyrocrete 241 HD, the substrate coating must be free of all oil, grease, condensation, or other contamination.

Steel
If primer is required, steel preparation before priming should be done in accordance with the recommended primer’s product data sheet. Contact Carboline Fireproofing Technical Service for approved primers.

Galvanized Steel
Pyrocrete 241 HD is usually applied directly over galvanized surface. If priming is required, contact Carboline Fireproofing Technical Service for recommendations.

Concrete
The recommended primer to seal concrete prior to applying Pyrocrete 241 HD is Carboguard 1340.

Non-Ferrous Metals
Aluminum, copper and other non-ferrous metals shall be primed with one coat of Carboline's Rustbond Penetrating Sealer.

Lathing & Attachments
3.4 lb./yd² (1.85 kg/m²) galvanized metal lath, may be pre-bent and tie-wired into place for appropriate design. Optionally, beam furring clips or electrically welded, pneumatic or self-tapping screws or studs, may be used.

Contour Design
3.4 lb./yd² (1.85 kg/m²) galvanized metal lath wrapped around the flange edges toward the web approximately 1½” (38 mm). Contour column designs allow the use of 2"x 2" (50.8 mm x 50.8 mm) galvanized or PVC coated hexagonal metal mesh with beam furring clips as an alternate to the 3.4 lb./yd² (1.85 kg/m²) galvanized metal lath. Plastic-nosed corner beads may also be used for better thickness control and aesthetics on flange edges of steel. Please refer to design details. For contour applications on structural members with web span greater than 16” (406 mm) or flange widths greater than 12” (304 mm) refer to the UL Fire Resistance Directory under “Coating Materials” section.

Boxed Design
3.4 lb./yd² (1.85 kg/m²) galvanized metal lath wrapped around member spanning the web, overlapped 1” (25.4 mm) and tie-wired on the flange face 12” (304 mm) on center. For large webbed members, additional support for lath may be needed for ease of installation. Plasticnosed corner beads may also be used for better thickness control and aesthetics.

Tower Skirts and Flat Surfaces
Require that 3.4 lb./yd² (1.85 kg/m²) galvanized metal lath be anchored on 12” to 24” (304 mm to 610 mm) centers depending upon requirements. The lath should overlap and be tie-wired. On tower skirts only, PVC coated mesh can be used in lieu of 3.4 lb./yd² (1.85 kg/m²) galvanized lath. Mesh shall be 2” x 2” (50.8 mm x 50.8 mm) 20 gauge wire coated with PVC as furnished by Carboline. When ram set or welding is prohibited; a pneumatic fastener may be used. On very large areas, control joints are made by scoring halfway through the thickness of Pyrocrete. This is achieved by using the trowel blade edge or an appropriate scoring tool. A preferred option would be the use of plastic-nosed corner beads. Spacing should be on 10’ (3 m) centers, both horizontally and vertically. Please refer to design details or contact Carboline Fireproofing Technical Service.

Mixing
Use a heavy-duty mortar mixer rotating at 40 rpm with rubber tipped blades that will scrape the sides and bottom of the mixer. A 50 lb. (22.7 kg) bag of Pyrocrete 241 HD typically requires a mixer volume of 8 ft³ (227 L) minimum and mixer . Do not use pan type mixers.

Target water level: 4.5 gallons (17 liters) Add 4.5 gallons (+/- 0.5 gallons) of clean, potable water to a mortar mixer with rubber tipped blades. With mixer running slowly, add powder and mix for 5 minutes (10 minutes maximum) until a homogeneous mortar-like consistency is achieved. Longer mixing times may result in lower densities.

Total water must not exceed 5 gallons (19 liters) per 50 lb. (22.7 kg) bag. In cool weather, warm water may be used to enhance application. In hot weather, cold water may be used.

It is your responsibility to read the Product Data Sheets (available below) before you place an order and prior to application of the product. The content of this website is our best recommendation and is not advice. Coverage rates quoted are approximate, you agree that coverage depends on the condition of the substrate, surface absorption, texture and application method. We ALWAYS recommend a trial area is coated to ensure the product meets your requirements before use.

Product Details
0182S1NL
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Customer agrees that before placing an Order, Customer has read and understood the most up to date Product Data Sheet for the Product. Where we have access to the Product Data Sheet from the manufacturer, we will either provide a copy on request, or include a link to the Product Data Sheet available on the manufacturer’s website. Customer further agrees that we have no liability for any errors or omissions contained within the Product Data Sheets. For more information, please see our Terms & Conditions of Sale.


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