BS EN 12274-4:2018

What is BS EN 12274-4 - Determining the minimum cohesion of a slurry surfacing mixture about?  

BS EN 12274-4 is the fourth part of the BS EN 12274 series of standards that discusses slurry surfacing. BS EN 12274-4 is used to determine the minimum cohesion of a slurry surfacing mixture. BS EN 12274-4 specifies a test method for determining the minimum cohesion of a slurry surfacing mixture, which enables the set time and trafficability time to be determined. 

BS EN 12274-4 applies to slurry surfacing to be used in surface layers for roads, airfields and other trafficked areas. 

Who is BS EN 12274-4 - Determining the minimum cohesion of a slurry surfacing mixture for? 

BS EN 12274-4 on determining the minimum cohesion of a slurry surfacing mixture is useful for: 

• Construction material manufacturers 
• Road and transport department  
• Civil engineers 
• Construction companies 
• Contractors 

Why should you use BS EN 12274-4 - Determining the minimum cohesion of a slurry surfacing mixture?  

BS EN 12274-4 specifies a test method for determining the minimum cohesion of a slurry surfacing mixture.

This will help the workers to know the time elapsed between placing a slurry surfacing and its setting and the period after laying when the slurry surfacing can accept traffic. 

What’s changed since the last update?  

BS EN 12274-4:2018 supersedes BS EN 12274-4:2003, which is withdrawn. 

BS EN 12274-4:2018 includes some technical changes with respect to BS EN 12274-4:2003.  

These include: 

• The requirement for five samples for test has been removed, permitting the actual number to be determined in the producer’s method statement. Precision for five and three samples is being evaluated 
• The temperature to facilitate drying has been increased from 100 °C to 110 °C 
• The possibility of usage of automatic equipment added 
• Various Notes have been changed to standard text to clarify the requirements and improve precision 
• Visual assessment of the samples after test is graded according to photographs that have been added