MONOKOTE Z-156T - Ultra High Density Tunnel Grade Fireproofing

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MONOKOTE® Z-156T 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-156T is a Portland cement-based, factory-mixed material requiring only the addition of water on the job 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-156T 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 UL 1709 hydrocarbon test
  • Up to 4 hours in accordance with UL 263 (ASTM E119)
  • Investigated by UL for exterior use

Features & Benefits

MONOKOTE® Z-156T 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.
  • Attractive finishes - MONOKOTE® Z-156T may be sprayed or hand troweled after spraying to achieve a lightly textured appearance.
  • Equipment versatility - MONOKOTE® Z-156T can be mixed in standard plaster mixers. After mixing, MONOKOTE® Z-156T may be spray-applied with commonly available pumping and spraying equipment.
  • Corrosion inhibition - MONOKOTE® Z-156T 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.
  • Durable - Hardness and maximum durability help resist accidental physical damage even in the toughest exposures.
  • Weatherable - Able to withstand freeze/thaw, wind, rain and other climatic conditions.

Uses

MONOKOTE® Z-156T 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. 50 pcf (800 kg/m3) See note below*** ASTM E605
Bond strength Min. 10,000 psf (478 kN/m2) 20,680 psf (990 kPa) ASTM E736
Compression, 10% deformation 850 psi (5.86 MPa) 874 psi (6.03 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 91 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.