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ABOUT MARBLE

With the addition of marble as an aggregate choice for resin bound ONEPOINT has been exploring its suitability for foot and vehicle traffic. 

Two of the most important considerations when selecting aggregates for resin bound are the aggregates hardness as measured by the Internationally recognised Moh scale and the Aggregate Crush Value ACV.

Moh - Hardness Score

MARBLE

3

GRANITE

6.5

QUARTZ

7

The most commonly used aggregates in resin bound are quartz and granite. 

ACV - Aggregate Crush Value

MARBLE

32

GRANITE

32

QUARTZ

12

The higher the score, the easier it is to crush the aggregate.

To calculate the suitability of an aggregate for the proposed use we recommend adding together 100Kg's of the aggregate blend work out the Moh and ACV then divide it by 4 to get the results. For example:

  • 3 x Quartz + 1 x Granite = 27.5 Moh ÷ 4 = 6.87 Moh Hardness Rating.

  • 3 x Quartz + 1 x Granite = 66 ACV ÷ 4 = 16.5 ACV Aggregate Crush Value

Our minimum values recommendation:

Driveways

Foot Traffic

Moh

ACV

6.5

30

30

32

Including any marble in a driveway blend will result in Moh and ACV values below our recommended minimums. We believe that marble is suitable for foot traffic areas only. There is a wide range of attractive colours and sizes of marble available for foot traffic areas.

We have submitted a more detailed analysis with various calculations to FERFA, the recognised authority on resin. We have requested clarification on the suitability of marble as a driveway blend. We will update this page with their findings when they are available.

Update: 23rd June 2020  - FERFA have acknowledged our enquiry and plan to raise it at their next technical committee meeting.

Update 15th Septemberr 2020 - A number of contractors have been asking if we can supply marble for the use as a resin bound driveway. We continue to say yes we can supply it but that it is not suitable for driveways. Below is some additional information.

Source Construction aggregates: evaluation and specification

Los Angeles Abrasion Value (LAAV) – this is a measurement of the resistance to attrition. A test specimen (5kg) is loaded into a hollow steel container with 6 – 12 steel balls which rotates at 33 rpm. The weight proportion finer 1.6 mm after testing (determined by screening) is the LAAV.

Aggregate Abrasion Value (AAV) – this is an estimate of the surface wear of road surfacing aggregate and is an indicator test for abrasion resistance. Aggregate particles (10-14mm) are mounted in resin mould and abraded using a specially designed machine. The percentage loss of the test specimen is the AAV. The lower the result the more the resistant the aggregate

AAV Comparrison

MARBLE

35

5.2

4

The most commonly used aggregates in resin bound are quartz and granite. 

LAAV and AAV results produce very similar results. 

The lower the number the the more resistant an aggregate is to abrasion. Abrasion is caused when a car traffics a resin bound surface.

The maximum Aggregate Abrasion Value AAV we recommend for vehicle traffic is 5.2

 

QUARTZ

GRANITE

Conclusion

Based upon tests carried out by ONEPOINT RESIN we found that marble, as a vehicle traffic surface began to show signs of wear after 15 months and significant wear after 3 years. If you are going to install marble based upon your suppliers recommendation, it would be sensible to request email confirmation that they will cover material replacement costs should the surface fail.

Finally, the reason for providing this information is to ensure the continued growth of the resin bound industry achieved through top quality, lasting installations. We believe that marble is not suitable for use on driveways and hope that the technical facts above, which is widely available assists contractors and home owners in choosing the aggregates that are most suitable for the proposed surface use.

UNIT 2 BROOK HOUSE,

LARKFIELD TRADING ESTATE,

NEW HYTHE LANE,

LARKFIELD, KENT. ME20 6GN.

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