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Material Description

Cafco MANDOLITE® CP2 is a spray applied, single package factory controlled premix, based on vermiculite and Portland cement, for internal use.

Cafco MANDOLITE® CP2 produces a monolithic coating able to withstand the thermal shocks experienced in a high intensity cellulosic fires. Concrete structures in particular, will be protected from explosive spalling when coated with Cafco MANDOLITE® CP2.

Although low in density, thus significantly reducing dead load, Cafco MANDOLITE® CP2 is highly durable and will not crack or spall under mechanical impact.

Cafco MANDOLITE® CP2 may be applied within environments where limited exposure to the elements is likely throughout the building phase of the project, e.g. perimeter beams.

Cafco MANDOLITE® CP2 is used for application to steel and concrete frames, metal floor or roof decks, and return air plenums. It may be easily removed and reinstated locally when additional fixings are required. Building types that will benefit from the use of Cafco MANDOLITE® CP2 include a wide range of educational, leisure and entertainment centres, commercial or industrial projects.

Vermiculite & portland cement based wet mix spray

Advantages


 
Structures protected with Cafco MANDOLITE® CP2 can provide fire resistance for up to 240 minutes.
Does not release toxic or hazardous fumes.

 
Presents no known health hazards either before, during or after application.

Fire Protection Thickness

The thickness of the fire protection for a given period of fire resistance in a cellulosic type fire, relates to the Hp/A ratio of a steel section. Hp/A is the ratio of the heated perimeter of the steel section exposed to fire to the cross-sectional area of the same steel section.

All column and beam sections have their own specific Hp/A ratio. Please consult Promat to establish the Hp/A ratio for a particular beam or column section. Tables 1 and 2 ascertain the thickness of Cafco MANDOLITE® CP2 that meets the required period of fire resistance for I section beams and H section columns.

For advice on thickness calculations for hollow sections, cellular beams, castellated sections, composite floors, upgrading of concrete slabs and more complex situations, please contact Promat.

Table 1
Cafco MANDOLITE® CP2 thicknesses for I section beams (3-sided exposure). Critical temperature 620ºC, continuous concrete topping. (BS476: Part 21: 1987)
Hp/A Thickness for the fire resistance required
30 min 60 min 90 min 120 min 180 min 240 min
30 8mm 8mm 9mm 11mm 16mm 21mm
50 8mm 8mm 12mm 15mm 22mm 28mm
70 8mm 10mm 14mm 18mm 26mm 34mm
90 8mm 11mm 16mm 20mm 29mm 38mm
110 8mm 12mm 17mm 22mm 31mm 41mm
130 8mm 13mm 18mm 23mm 33mm 43mm
150 8mm 13mm 19mm 24mm 35mm 45mm
170 8mm 14mm 19mm 25mm 36mm 47mm
190 8mm 14mm 20mm 26mm 37mm 48mm
210 9mm 15mm 20mm 26mm 38mm 49mm
230 9mm 15mm 21mm 27mm 39mm 51mm
250 9mm 15mm 21mm 27mm 39mm 51mm
270 9mm 15mm 21mm 28mm 40mm 52mm
290 9mm 16mm 22mm 28mm 40mm 53mm
310 9mm 16mm 22mm 28mm 41mm 54mm

Table 2
Cafco MANDOLITE® CP2 thicknesses for I section beams and H section columns (4-sided exposure). Critical temperature 550ºC. (BS476: Part 21: 1987)
Hp/A Thickness for the fire resistance required
30 min 60 min 90 min 120 min 180 min 240 min
30 8mm 8mm 10mm 13mm 19mm 24mm
50 8mm 10mm 14mm 18mm 25mm 33mm
70 8mm 12mm 16mm 21mm 30mm 38mm
90 8mm 13mm 18mm 23mm 33mm 43mm
110 9mm 14mm 19mm 25mm 35mm 46mm
130 9mm 15mm 20mm 26mm 37mm 48mm
150 10mm 15mm 21mm 27mm 38mm 50mm
170 10mm 16mm 22mm 28mm 40mm 52mm
190 10mm 16mm 22mm 28mm 41mm 53mm
210 10mm 17mm 23mm 29mm 42mm 54mm
230 10mm 17mm 23mm 30mm 42mm 55mm
250 11mm 17mm 24mm 30mm 43mm 56mm
270 11mm 17mm 24mm 30mm 44mm 57mm
290 11mm 18mm 24mm 31mm 44mm 57mm
310 11mm 18mm 24mm 31mm 45mm 58mm

NOTE: Maximum steel temperatures are normally accepted at 550ºC (for columns) and 620ºC (for 3-sided beams acting as support to composite concrete floors only) for fully loaded steel members. The above tables are based on report no. WFRC C52252.
Typical Mechanical Properties

Properties and performance
Colour and finish
Off-white with a monolithic spray texture.
Theoretical coverage 172m²/tonne at 15mm thickness
Number of coats One or more as required
Cure By hydraulic set
Initial set 2 to 6 hours at 20°C and 50% RH
Density 390kg/m³ ± 15% (when dry and in place)
Bond impact No cracks or delaminations in accordance with ASTM E760
Air erosion resistance No erosion in accordance with ASTM E859
Deflection effect No cracks or delaminations within normal code limits
Compressive strength 563kPa in accordance with ASTM E761
Combustibility Non combustible in accordance with BS476: Part 4
Flame spread Class 0 as defined by relevant Building Regulations
Smoke generation Does not contribute to smoke generation
Thermal conductivity 0.095 W/mK at 20°C
Corrosion resistance
Does not promote corrosion of steel. However, a primed substrate is recommended for long term corrosion resistance. See Preparation section on bellow.
pH value 12.0-12.5
Fire resistance
Structures protected with Cafco MANDOLITE® CP2 have undergone fire resistance tests up to 240 minutes in approved independent laboratories to recognised standards throughout the world, including:
Australia (AS1530: Part 4)
UK (BS476: Parts 20-21: 1987)
Germany (DIN 4102)
USA (ASTM E119 UL263)
The tests also comply with International Standard ISO834
Cafco MANDOLITE® CP2 protected structures have been successfully tested under BS476: Part 21 to failure temperatures of up to 800ºC. This allows the specifier the freedom to adopt a fire engineering approach to fire resistance in accordance with BS5950: Parts 3 and 8, as well as the relevant Eurocodes.
The fire resistance test results relate solely to the construction tested and test conditions imposed. On receipt of relevant details, Promat provides upon request computer-based thickness calculations to meet specific fire resistance requirements. See Fire Protection Thickness.

Please refer to the separate publication of Cafco MANDOLITE® CP2 application guide for further details or consult nearest Promat office for specific details pertaining to local conditions.

Preparation
Typical substrates
Unprimed and primed steel, concrete frames, metal floor/roof decks and return air plenums.
Substrate preparation
The substrate shall be clean, dry and free from dust, loose mill scale, loose rust, oil and any other condition preventing good adhesion.
Cafco MANDOLITE® CP2 can be applied to unprimed or primed steelwork.
Prior to the application, incompatible primers should be prepared by the application of Cafco PSK® 101 or CAFCO® SBR Bonding Latex used as a keycoat.
Mesh reinforcement
Most fire tests conducted have been carried out without mesh reinforcement, to demonstrate the ability of MANDOLITE® CP2 to stay in place under the most severe fire conditions. However, for maximum long term in service durability, the use of lightweight mesh reinforcement is recommended where vibration or mechanical damage and the possibility of subsequent loss of bond may exist.

Application
Initial steps
Application of Cafco MANDOLITE® CP2 must be carried out by an applicator recognised by Promat.
Methods
Mix Cafco MANDOLITE® CP2 with potable water in a suitable mixer and apply by a spraying machine approved by Promat.
Cafco MANDOLITE® CP2 may be centrally pumped vertically or horizontally, enabling all spray plant and material storage to be contained in one area.
Limitations
Cafco MANDOLITE® CP2 may be applied when the substrate and air temperatures are at least 2ºC and rising, but should not be applied if the substrate or air temperatures are less than 4ºC and falling. Maximum substrate and air temperature is 45ºC.
Substrate temperature should be at least 2ºC above dew point temperature.

Handling
Top coating
Cafco TOPCOAT® 200 may be used as protection from frequent wash down, long term chemical spills, or for improved resistance to fungal, algal and bacterial growth.
Packaging 12.5kg bags except:
15kg for Taiwan
20kg for Australia
Storage Off the ground and kept dry until ready for use.
Shelf life Maximum 12 months
Environmental

 
Do not discharge into drains, watercourses or soil.
Not readily biodegradable.
Not expected to bioaccumulate.

 
Not expected to be toxic to aquatic life except at high concentrations.

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