PD CEN/TS 12697-50:2018

What is PD CEN/TS 12697-50 - Determining the resistance to scuffing of bituminous mixtures about?  

PD CEN/TS 12697-50 discusses bituminous mixtures. PD CEN/TS 12697-50 specifies a test method for determining the resistance to scuffing of asphalt mixtures which are used in surface layers and are loaded with high shear stresses in road or airfield pavement. These shear stresses occur in the contact area between tyre and pavement surface and can be caused by the cornering of the vehicle. Due to these shear stresses, the material loss will occur at the surface of these layers. The test is normally performed on asphalt layers with a high amount of air voids (e.g., porous asphalt), but can also be applied on other asphaltic mixtures. Test specimens are used either produced in a laboratory or cut from the pavement. 

Note: PD CEN/TS 12697-50 developed to determine the resistance to scuffing for noise-reducing surface layers were traveling is the normative damage criterion. The test can also be performed on other surface mixtures with high resistance to permanent deformation. In case a mixture has a low resistance to permanent deformation, rutting can occur during the test. This can influence the test results. 

Who is PD CEN/TS 12697-50 - Test method for determining the resistance to scuffing of bituminous mixtures for? 

PD CEN/TS 12697-50 on test method for determining the resistance to scuffing of bituminous mixtures is useful for: 

• Manufacturers and suppliers of bituminous mixtures and asphalt  
• Suppliers of construction materials  
• Construction and civil engineers  
• Contractors  
• Road maintenance authorities 
• Scuffing device manufacturers 

Why should you use PD CEN/TS 12697-50 - Test method for determining the resistance to scuffing of bituminous mixtures?  

Bituminous materials are employed in a variety of applications, including road construction, roofing, waterproofing, and more. The objective of PD CEN/TS 12697-50 is to evaluate the functional and mechanical performance of bituminous mixtures. 

PD CEN/TS 12697-50 provides test methods that will help to measure aggregate toughness and abrasion resistance such as crushing, degradation, and disintegration of the bituminous mixture. Overall, PD CEN/TS 12697-50, you will be able to deliver more durable and long-lasting products and services that could reduce maintenance requirements while mitigating risk arising from layer delamination or water ingress. 

 What is changed since the last update?  

PD CEN/TS 12697-50:2018 supersedes PD CEN/TS 12697‑50:2016, which is withdrawn.  

PD CEN/TS 12697-50:2018 includes some technical changes with respect to PD CEN/TS 12697‑50:2016. These include: 

• General: Several editorial changes have been performed for clarity and increased consistency of used terms, definitions, symbols, abbreviations, and units. NOTES are amended to normal text were appropriate 
• The clause numbers for Terms, definitions, symbols, and abbreviations and Principle has been altered to be in line with current template for standards 
• Completion of symbol, D, and definition for the diameter of the tested core specimen, in 0,1 mm 
• Standard dimensions for slabs deleted and transferred (only valid for Arte). Completion with reference to Annexes A to D 
• Abbreviations for the listed devices are completed with the full title for clarification 
• Conformity of definition for ΔV to read “increase of texture” for consistency