Rate of spread and accuracy of spread of binder and chippings for surface dressing (according to NBN EN 12272-1)

These test methods were developed to measure rates of spread on site, both longitudinally and transversely. The transverse measurements are used to check the operation of chipping and binder spreaders, and the longitudinal measurements to verify whether the rates declared by the contractor have actually been spread on site.

Description of the method of measurement
The measurements are carried out as specified in standard NBN EN 12272-1 Rate of spread and accuracy of spread of binder and chippings.

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