TuffTrak® Technical Data

TuffTrak® heavy duty road mat is a one piece solid mat made from recycled or virgin high density (HD) or Ultra High Molecular Weight (UHMW) polyethylene. It can be installed to provide either temporary access roads or work pads.

TuffTrak® Dimensions and Weight.

 

Length:

3000mm

Width:

2500mm

Core Thickness (excluding traction nubs): 

38mm

Usable surface area:

7.5m2

Weight

295kg

TuffTrak chevron traction surfaceTuffTrak® High Profile Chevron Traction® Surface

Traction nub height 6.5mm

 

 

 

TuffTrak low profile traction surface

TuffTrak® Low Profile Traction Surface

Traction nub height 3mm

 

 

 

Force

(kN)

Deflection

(mm)

(kN) (mm)
100 0.57
200 0.95
300 1.52
400 2.27
600 5.05
800 8.05
1000 9.30
1200 10.10
1400 10.68
1600 11.20
1800 11.60
2000 12.07
2200 12.55
2400 12.85
2600 13.43
2800 14.55
3000 16.10
3050 16.65

Compression Testing

TuffTrak® has been subjected to a compressive force test at the National Physical Laboratory (NPL), UK using a circular steel platen (surface area 535 sq cm). The platen test equates to a point load test as required by BS EN 124: 1994. Samples were compressed in the NPL 12 MN hydraulic test machine. Tests were carried out under laboratory conditions with the temperature controlled to 20°C  +/-1°C and relative humidity controlled to 50%  +/- 5%.

 

 

 

 

 

 

 

Please note that testing is undertaken carried out with mat samples placed on a solid substrate, therefore, data cannot be interpreted for non-solid or very soft ground conditions. During testing the TuffTrak® samples resisted breakage and splitting with progressive recovery of the materials to their original state.

 

Finite Elemental Anaylsis

FEA was undertaken to calculate deflection for different California Bearing Ratio (CBR) values at various loading conditions applied to a 508 x 254mm foot print area at the center of the mat. 

It should be noted that these results are from a computer simulation. Deflection depends on the various input parameters, mat material and material properties, mat thickness and width, operation ground conditions and environmental temperature.

 

 

Type CBR Range   Type CBR Range
Well-graded gravels and 
gravel-sand mixtures
40 - 30  
Clayey sands, sand-clay 
mixtures
5 - 20
Poorly graded gravels 
and gravel-sand mixtures
30 - 60  
Inorganic silts, very 
fine rock
15 or less
Silty gravels, gravel-sand-
silt mixtures
20 - 60  
Inorganic clays of low to 
medium plasticity
15 or less
Clayey gravels, gravel-
sand-clay mixtures
20 - 40  
Organic silts and organic 
silty clays of low plasticity
5 or less
Well graded sands and 
gravelly sands
20 - 40  
Inorganic silts, fine sand 
or silts, elastic silts
10 or less
Poorly graded sands and 
gravely sands
10 - 40  
Inorganic clays or high 
plasticity fat clays
15 or less
Silty sands, sand-silt 
mixtures
10 - 40  
Organic clays of medium 
to high plasticity
5 or less

Information obtained from various sources. Users are advised to obtain professional geotechnical advice on the utilisation of TuffTrak® on specific site ground conditions.

 

Material Properties

Chemical Resistance

HPDE

UHMWPE

Acids - concentrated

Good - Fair

Good - Fair

Acids - dilute

Good

Good

Alcohols

Good

Good

Alkalis

Good

Good

Aromatic hydrocarbons

Fair

Fair

Greases and Oils

Good - Fair

Good - Fair

Halogenated Hydrocarbons

Fair - Poor

Fair - Poor

Halogens

Fair - Poor

Fair - Poor

Ketones

Good - Fair

Good - Fair

Electrical Properties

 

 

Dielectric constant @ 1Mhz

2.3 - 2.4

2.3

Dielectric strength (kN mm-1)

22

28

Dissipation factor @ 1Mhz

1-10x10-4

1-10x10-4

Surface resistivity (Ω*cm)

1013

1013

Volume resistivity (Ω*cm)

1015 - 1018

1018

Physical Properties

 

 

Density (g cm3)

0.95

0.94

Charpy Notched Impact Strength (mJ/mm2)

no break

no break

Shore hardness D

62 - 68

64

Limiting oxygen index (%)

17

17

Radiation resistance

Fair

Fair

Refraction index

1.54

N/A

Resistance to Ulra-violet

Poor

Poor

Water absorption (%)

<0.01

<0.01

Colour

 

Black or similar

Odour

 

Odourless

Thermal Properties

 

 

Flammability

HB

HB

Coefficient of thermal expansion (x106 K1)

100 - 200

130 - 200

Heat - deflection temperature - 0.45Pa (oC)

75

69

Heat - deflection temperature - 1.8Pa (oC)

46

42

Specific heat (J K-1 kg-1)

1900

1900

Crystalline grain melting range

135 to 145

133 to 138

Thermal conductivity @23oC (Wm-1 K-1)

0.45 - 0.52

0.42 - 0.51

Upper working temperature (oC)

55 - 120

55 - 95

 

 

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