What is BS EN 14023 - Framework for polymer modified bitumens about?  
The dynamic properties of bitumen make it a preferred ingredient in the construction of roads, helipads, highways, runways, asphalt pavements, and roofing. BS EN 14023 is a European Standard that discusses bitumen and bituminous binders.
BS EN 14023 provides a framework for specifying the characteristics and relevant test methods for polymer-modified bitumens that are suitable for use in the construction and maintenance of roads, airfields, and other paved areas.
Who is BS EN 14023 - Framework for polymer modified bitumens for? 
BS EN 14023 on a framework for polymer modified bitumens is useful for: 
- Manufacturers of bitumen and bituminous products
- Real estate developers who maintain roads and pavements within complexes
- Construction and civil engineers
- Product development teams/innovation teams
- Contractors
- Airport and road maintenance authorities
- Quality control/testing personnel
Why should you use BS EN 14023 - Framework for polymer modified bitumens?  
Bitumen, when used as a binder in asphalt, is used in the construction domain for road construction, paving, and roofing.
Guidance for users on the implementation of BS EN 14023 for polymer modified bitumens for use in the construction and maintenance of roads and airfields in the UK is included in National Annex NA.
This introduction gives information on the basis for the selection of the grades defined in BS EN 14023, the status of certain characteristics and test methods, and the proposed development of BS EN 14023.
The general principle adopted in the development of EN 12591 was to provide a range of grades suitable for the manufacture of the materials for road construction and maintenance used, and the climatic and traffic conditions encountered, in all the Member States. BS EN 14023 extends the range of grades specified in EN 12591, following the wider use of modified binders for road construction and maintenance having improved performances.
As with EN 12591, it is compulsory for the full specification to be published in all EU and EFTA countries. However, it is permitted for each country to define the most suitable grades and classes.
This framework covers the following characteristics:
- Consistency at intermediate service temperature
- Consistency at elevated service temperature
- Cohesion
- Durability of consistency
- Brittleness at low service temperature
- Strain recovery
The cohesion property has been included as a means of discriminating between polymer-modified bitumens and other bituminous binders. The other essential requirements, "adhesion" and "setting ability" are indicated by tests carried out on the finished asphalt mixtures.
The introduction of classes of convenience in Table 1, Table 2, and Table 3 enables the selection of the most suitable specification for the bitumen taking into account local conditions of climate and use. The nomenclature of polymer-modified bitumens comprises the penetration range and the minimum softening point.
BS EN 14023 covers a large variety of road materials for different applications, to accommodate local traffic loads and climatic conditions. BS EN 14023 therefore also covers a large range of bitumens to facilitate the production and application of the designed paving.
BS EN 14023 guidelines help you ensure the quality and performance of the asphalt. This enhances the durability and service life of roads and pavements.
