Road Pavement Forum May 2006 REVISION Technical Guideline: The use of Modified Bituminous Binders in Road Construction (TG 1: 2001)

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Presentation transcript:

Road Pavement Forum May 2006 REVISION Technical Guideline: The use of Modified Bituminous Binders in Road Construction (TG 1: 2001)

Revision Process  Identify issues w.r.t current specifications  Review international specifications  Identify other needs w.r.t guidelines

Document Structure  HSE  Product composition & properties  Product manufacture  Modified binder classification system  Product requirements  Selection criteria  Influence on design methodologies  Construction  Quality assurance  Protocol for introduction of new modifiers  Appendix: Sampling & test methods

Document Structure  HSE  Product composition & properties  Product manufacture  Modified binder classification system  Product requirements  Selection criteria  Influence on design methodologies  Construction  Quality assurance  Protocol for introduction of new modifiers  Appendix: Sampling & test methods

Classification System  Expanded to include other modifier types (and applications) –Hydrocarbon modifiers –FT wax –Microsurfacings –Bond coats  Crack sealants!

Document Structure  Modified binder composition  Product properties  Modified binder classification system  Product requirements  Selection criteria  Influence on design methodologies  Construction  Quality assurance  Protocol for introduction of new modifiers  HSE  Appendix: Sampling & test methods

Product Requirements  Collection and analysis of historical results of all modified classes  “Tightening up” existing limits  Adding upper (or lower) limits  Adhesion criteria  Addressing “Report Only” criteria

Document Structure  Modified binder composition  Product properties  Modified binder classification system  Product requirements  Selection criteria  Influence on design methodologies  Construction  Quality assurance  Protocol for introduction of new modifiers  HSE  Appendix: Sampling & test methods

Selection Criteria Expanded significantly to incorporate: Expanded significantly to incorporate:  Specific requirements for Seals incl. “winter grades” “winter grades”  Specific requirements for HMA  Practical constraints – climate, location, production rates etc.

Document Structure  Modified binder composition  Product properties  Modified binder classification system  Product requirements  Selection criteria  Influence on design methodologies  Construction  Quality assurance  Protocol for introduction of new modifiers  HSE  Appendix: Sampling & test methods

Influences on Design Methodologies  Surface seals – adjustment factors etc  HMA – compaction temperatures, volumetrics etc.  Need to align with or compliment other documents – TRH 3; IGHMA etc. other documents – TRH 3; IGHMA etc.

Document Structure  Modified binder composition  Product properties  Modified binder classification system  Product requirements  Selection criteria  Influence on design methodologies  Construction  Quality assurance  Protocol for introduction of new modifiers  HSE  Appendix: Sampling & test methods

Construction  Construction requirements & constraints Surface Seal & HMA

Document Structure  Modified binder composition  Product properties  Modified binder classification system  Product requirements  Selection criteria  Influence on design methodologies  Construction  Quality assurance  Protocol for introduction of new modifiers  HSE  Appendix: Sampling & test methods

Quality Assurance  During blending  During handling & storage  During construction  Sampling and testing frequencies

Conclusions  Initially a routine update exercise – now a major rewrite!!!!!  Still on target for original deadline: May 2007