MONOKOTE Z-146 High Density Cementitious Fireproofing

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MONOKOTE® Z-146 high density cementitious fireproofing has been developed by GCP Applied Technologies to meet specialty, commercial and industrial fireproofing requirements.

MONOKOTE® Z-146 is a Portland cement-based, factory-mixed material requiring only the addition of water on the jobsite for application. It is spray applied directly to structural steel (beams and columns), providing up to 4 hours of fire resistance. Its physical characteristics are excellent for areas exposed to environmental or climatic conditions.

MONOKOTE® Z-146 may be used in areas where high durability is required such as parking garages. This product is ideal for use in clean room environments where issues such as particle emissions and off gassing are critical to the interior environment within the building.

Features & Benefits

MONOKOTE® Z-146 offers the following advantages to architects, engineers, and applicators:

  • Factory pre-mixed - Ready to use. No job site proportioning required. Simply add water in a standard paddle-type plaster mixer and apply with conventional plastering equipment.
  • Non-toxic - The factory-mixed blend of common Portland cement and other inert materials requires only the addition of water for mixing and application.
  • Attractive finishes - MONOKOTE® Z-146 may be sprayed or hand troweled after spraying to achieve a lightly textured appearance.
  • Equipment versatility - MONOKOTE® Z-146 can be mixed in standard plaster mixer. After mixing, MONOKOTE® Z-146 may be spray-applied with commonly available pumping and spraying equipment.
  • Moisture resistant - The Portland cement base affords excellent fire protection characteristics in areas subjected to high humidity.
  • Durable - Hardness and durability help resist accidental physical damage.
  • Weatherable - Able to withstand freeze/thaw, wind, rain and other climatic conditions.

Uses

MONOKOTE® Z-146 may be used in parking garages, exterior areas, mechanical rooms and other areas where a highly durable product is required.

Performance Characteristics

PHYSICAL PROPERTIES RECOMMENDED SPECIFICATION LABORATORY TESTED* VALUES TEST METHOD **
Dry density, minimum average Min. 40 pcf (640 kg/m3) See note below*** ASTM E605
Bond strength Min. 10,000 psf (478 kN/m2) 16,727 psf (800 kPa) ASTM E736
Compression, 10% deformation 500 psi (3.45 MPa) 561 psi (3.87 MPa) ASTM E761
Air erosion Max 0.000 g/ft2 (0.00 g/m2) 0.000 g/ft2 (0.00 g/m2) ASTM E859
High velocity air erosion No continued erosion after 4 hours No continued erosion after 4 hours ASTM E859
Hardness 40 49 ASTM D2240
Bond impact No cracking, spalling or delamination No cracking, spalling or delamination ASTM E760
Deflection No cracking, spalling or delamination No cracking, spalling or delamination ASTM E759
Resistance to mold growth No growth after 28 days No growth after 28 days ASTM G21
Surface burning characteristics Flame spread = 0 Smoke developed = 0 Flame spread = 0 Smoke developed = 0 ASTM E84
Combustibility Less than 5 MJ/m2 total,
20 kw/m2 peak heat release
Less than 5 MJ/m2 total,
20 kw/m2 peak heat release
ASTM E1354

* Independent laboratory tested value. Report available upon request.
** ASTM International test methods modified for Bond Strength and Compressive Strength, where required, for high density, high performance products.
*** All in-place performance tests should be conducted at or below the minimum recommended specification density.