addition of small quantities of bitumen emulsion during construction n to enhance the durability of material marginally in or out of specification are also ongoing Certification of non-standard products Developed to match the advantages of the UK Highways Agency Product Assessment System (HAPAS) and the French Avis Technique methods of certifying non-standard products for the built environment. The system is managed by the CSIR and the Agrement Board of South Africa and has three relevant road construction products: Bridge deck joints Ultra Thin Friction Courses (UTFC) Cold mix patching materials The system is on the British Board of Agrement, assesses available historical data and track record including inspections of existing sites. Appropriate laboratory tests are conducted; trials and QC are witnessed leading to an interim certification. Installation trials are monitored for a period of two years after which a certificate to a given class of performance is issues. Continuous monitoring takes place. Ultra Thin Friction Courses Three products have been certified to the Agrement Board South Africa requirements and are being used in the country. UTFC has a wide range of applications and fits well into the perpetual pavement concept. The 15 to 25mm thick high friction surfacing is placed upon a pavement structure of sufficient thickness to prevent bottom up cracking. The sole maintenance measure for that pavement is then the periodic removal and replacement of the UTFC. UTFC is required to meet the performance matrix included in the following table from “Erik Denneman Fit for purpose certification of road products” Tour – – UTFC has been successfully used in airport applications and SANRAL has endorsed its use on their major highways and airports. (Corne Roux - CAPSA, Pieter Molenaar development and “The performance of a new Ultra Thin Friction Course for OR Tambo International Airport in South Africa” ) Ultra Thin Friction Course nearing the end of its service life Summary and recommendations
addition of small quantities of bitumen emulsion during construction n to enhance the durability of material marginally in or out of specification are also ongoing Certification of non-standard products Developed to match the advantages of the UK Highways Agency Product Assessment System (HAPAS) and the French Avis Technique methods of certifying non-standard products for the built environment. The system is managed by the CSIR and the Agrement Board of South Africa and has three relevant road construction products: Bridge deck joints Ultra Thin Friction Courses (UTFC) Cold mix patching materials The system is on the British Board of Agrement, assesses available historical data and track record including inspections of existing sites. Appropriate laboratory tests are conducted; trials and QC are witnessed leading to an interim certification. Installation trials are monitored for a period of two years after which a certificate to a given class of performance is issues. Continuous monitoring takes place. Ultra Thin Friction Courses Three products have been certified to the Agrement Board South Africa requirements and are being used in the country. UTFC has a wide range of applications and fits well into the perpetual pavement concept. The 15 to 25mm thick high friction surfacing is placed upon a pavement structure of sufficient thickness to prevent bottom up cracking. The sole maintenance measure for that pavement is then the periodic removal and replacement of the UTFC. UTFC is required to meet the performance matrix included in the following table from “Erik Denneman – Fit for purpose certification of road products” – Tour UTFC has been successfully used in airport applications and SANRAL has endorsed its use on their major highways and airports. (Corne Roux - CAPSA, Pieter Molenaar “The development and performance of a new Ultra Thin Friction Course for OR Tambo International Airport in South Africa” ) Ultra Thin Friction Course nearing the end of its service life Summary and recommendations
2011_AAPA_Study_Tour_Report_v4-2.docx