MONOKOTE Z-146T High Density Cementitious Fireproofing

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MONOKOTE® Z-146T high density cementitious fireproofing has been developed by GCP Applied Technologies to meet specialty and industrial fireproofing requirements requiring greater resistance to harsh environmental conditions.

MONOKOTE® Z-146T is a Portland cement-based, factory-mixed material requiring only the addition of water on the job site for application. It is spray applied, providing up to 4 hours of fire resistance. Its physical characteristics are excellent for areas exposed to environmental or climatic conditions. 

MONOKOTE® Z-146T may be used in areas where high durability and corrosion resistance is required such as substrates subjected to exterior exposure.

Approvals

  • Up to 4 hours in accordance with the Rijkswaterstaat (RWS) fire curve
  • Jet fire testing in accordance with HSE standard OTI 95 634
  • Up to 4 hours in accordance with UL 263 (ASTM E119)
  • Up to 4 hours in accordance with UL 1709 hydrocarbon test
  • Investigated by UL for exterior use

 

Features & Benefits

MONOKOTE® Z-146T 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-146T may be sprayed or hand troweled after spraying to achieve a lightly textured appearance.
  • Equipment versatility - MONOKOTE® Z-146T can be mixed in a standard plaster mixer. After mixing, MONOKOTE® Z-146T may be spray-applied with commonly available pumping and spraying equipment.
  • Corrosion inhibition - MONOKOTE® Z-146T neither prevents nor promotes the corrosion of steel, however, the inclusion of calcium nitrite as a corrosion inhibitor has been shown to retard the rate of corrosion due to salt and other aggressive environmental conditions.
  • 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-146T may be used in roadway tunnels and in exterior environments where a highly durable fireproofing is required and a threat of steel corrosion is present.

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.