Technical Details & Tests

Tested in accordance with TRL 176, as amended by BBA ” Guidelines Document for the Assessment and Certification of High Friction Surfaces for Highways” March 2008. The material was scuffed at 35 degrees centigrade as specified for a TYPE 3 high friction surfacing.

Skid resistance value was determined using slider 96 (96 IRHD) since this is more simulative of hard solid tyres as found on fork lift trucks.

Test results are compared to an untreated specimen of steel checker plate.

 

Scuff Test Details

Laboratory tests	Thermagrip	Untreated plate	BBA HAPAS requirement for TYPE 3 HFS
Initial Properties
Texture depth (mm)	1.1	1.2	1.0 minimum
Skid resistance value (Slider 96)	68	51	65 minimum
Properties after scuffing at 35oC
Texture depth (mm)	0.6		0.8 minimum
Loss in texture depth %	46.9		Information only
Erosion Index	0.0		15 maximum
Skid resistance value (Slider 96)	40		Information only

 

Scuff Test results

Specimen Number	129-1
Identification of slab	129-1
Texture depth of substrate (mm)	1.2
Thickness of coating (mm)	3.3
SRV before Scuffing	68.0
Date of test	04/08/2015
Time of test	08:30
Test Temperature (oC)	35.2
Initial Pressure 3.1 (Bar)	3.1
Final Pressure 3.1 (Bar)	3.1
Initial Tyre tread depth 1.5 (mm)	1.5
Final Tyre tread depth 1.5 (mm)	1.5
Angle of tyre to direction of travel	20o00'
Initial surface texture depth	1.1
Final surface texture depth	0.6
Loss of texture depth (%)	46.9
SRV after Scuffing	40.0
Erosion Index	0.0
Description of visual condition	No faults or anomalies were observed

 

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SATRA TM391D: 2003 Biomechanical Floor Abrasion

This test has been carried out in accordance with a SATRA test method (TM391D) for assessing flooring coverings using the walking machine, where a standard shoe (having a patterned sole unit with a tread depth of 5mm ± 0.5mm and shore A hardness of 54 is mounted on a foot form that is attached to the leg of a walking machine.

The flooring specimen is subjected to a cyclic walking action from the standard shoe, where the specimen rotates incrementally while the forepart is in contact with the sample.

These individual footsteps are designed to replicate a mixture of walking in a straight line and turning a corner. The flooring sample under test rotates such that it completes a full 360^o rotation every 150 footfalls.

 

Biomechanical Abrasion Test Results

Cycles Completed	Slider #96 - Pendulum Slip Value Dry	Slider #96 - Pendulum Slip Value Wet
Initial	63	59
250,000	60	55
500,000	63	55
750,000	62	53
1,000,000	62	56

 

BS 7976-2: 2002 Pendulum Testers, method of operation

The method of test is intended to assess the potential of slipping for people walking on a flooring material.

A pendulum attached to a spring loaded foot fitted with a standard rubber slider referenced Slider 96 (formally known as Four S rubber) is allowed to swing so the slider contacts dry or wet test flooring over a set distance.

The extent to which the pendulum fails to reach its release height on the overswing is determined as a measurement of the slip resistance.

The procedure is carried out in three directions, in one principle direction, at 90o to this and at 45o to the principle direction. The results are then assessed in accordance with the UK Slip Resistance Groups Guidelines issue 4: 2011

 

Pendulum Test Results

Condition	Direction A	Direction B	Direction C	Overall average slip measurement (PTV’s)
Slider #96 dry	62	63	63	63
Slider #96 wet (water)	59	59	60	59

 

Surface Roughness Measurements (Rz)

Roughness measurement	1	2	3	4	5	6	7	8	9	10	Ave
RZ value	44.1	54.2	53.2	69.3	126.8	74.9	46.3	109.2	89.0	82.5	75.0

 

UK Slip Resistance Group Guidelines

Slip Potential	PTV
High slip potential	0-24
Moderate slip potential	25-35
Low slip potential	36+

 

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