What is BS EN 12697-22 about?  

BS EN 12697- 22 is the 22nd part in the multi-series of European standard that discusses bituminous mixtures.

BS EN 12697-22 describes test methods for determining the susceptibility of bituminous materials to deform under load. The test is applicable to mixtures with an upper sieve size less than or equal to 32 mm.

The tests are applicable to specimens prepared from asphalt mixtures that have either been manufactured in a laboratory or cut from a pavement; test specimens are held in a mould with their surface flush with the upper edge of the mould.

Note: Large-size and extra-large-size devices are not suitable for use with cylindrical cores. 

Who is BS EN 12697-22 for? 

BS EN 12697-22 on wheel tracking is relevant to: 

Manufacturers and suppliers of bituminous mixtures
Suppliers of construction materials
Civil engineers
Contractors
Road maintenance authorities
Testing laboratories

Why should you use BS EN 12697-22?  

The susceptibility of a bituminous material to deform is assessed by measuring the rut depth formed by repeated passes of a loaded wheel at a fixed temperature.

BS EN 12697-22 specifies test techniques for measuring the deformability of bituminous materials under load. Specimens are conditioned in the air during testing with large-size and extra-large-size equipment. Specimens are conditioned in either air or water using tiny devices.

Conducting the tests in compliance with BS EN 12697-22, can assist you with design, including performance and durability, reuse and recycling, retreading, repaving, ex-situ recycling, 'tar' matter, and recycling with foam bitumen and low-temperature asphalts. Overall, the test results provide predictions on rutting, fatigue, moisture susceptibility, stripping and stability of the bituminous mixture when used in road/pavement structures.

BS EN 12697-22:2020

Bituminous mixtures. Test methods - Wheel tracking

Current, Under Review

Published:

31 Mar 2020