By european conference of ministers of transport
ISBN-10: 9282101584
ISBN-13: 9789282101582
Desk of content material :ForewordAcknowledgementsAbstractKey MessagesExecutive Summary1. heritage Report2. Key Findings of section I Study3. Mandate, Scope, and company of the Work4. Epoxy Asphalt: trying out and try Results5. excessive functionality Cementitious fabric: checking out and try Results6. functionality evaluation and Extrapolation of Results7. destiny examine and testing8. building concerns, monetary elements and chance Assessment9. section III Trials10. Findings, Conclusions and RecommendationsAppendix A-A1. Laboratory and box functionality Histories of usa and New Zealand Reference Materials-A2. brands' thoughts for Acid-Cured Epoxy Asphalts-A3. equipment for comparing Curing Characteristics-A4. Binder Rheological houses at distinction growing older Conditions-A5. blend PropertiesAppendix B. common long term wishes in Pavement ResearchAppendix C. Laboratory try out experiences released at the Joint shipping learn Centre WebsiteAnnex A. checklist of AbbreviationsAnnex B. checklist of operating staff contributors
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Additional info for Long-Life Surfaces for Busy Roads
Sample text
1 Epoxy Asphalt Selection Conventional bituminous binders are thermoplastics; they become soft when heated and harden when cooled. Epoxies on the other hand are thermosetting materials, that is, they have the property of LONG LIFE SURFACES FOR BUSY ROADS – ISBN 978-92-821-0158-2 - © OECD/ITF, 2008 44 – EXPOXY ASPHALT: TESTING AND TEST RESULTS becoming permanently hard and rigid once cured. Two significant consequences of this are: firstly, that traditional test methods and characterization protocols in many cases had to be modified to accommodate the thermosetting behaviour of epoxy asphalt; and second, a thorough knowledge of the curing history is paramount to obtaining useful data.
Balala reported on the rational for selecting this binder for the San Mateo Bridge in San Francisco in 1967 [1], and Gaul reported on its continued good performance 30 years after placement [2]. The Epoxy Asphalt group work assessed whether this long-life durability extends to the highway environment as well, when subjected to more severe climatic environments. The research approach taken in the Epoxy Asphalt group was to have participating laboratories identify and utilize local sources of epoxy asphalt and compare the characteristics and performance results with those of a reference material.
However, apart from the direct costs of maintenance funded from road administration budgets, road maintenance also imposes significant costs on users. On highly trafficked roads in particular, road maintenance is likely to cause traffic congestion and disruption to normal traffic flows. Despite the measures taken by road maintenance operations, the costs to users in many locations are high and increasing. Hence, there are growing pressures for long-life road infrastructure pavements that require minimal maintenance and can therefore avoid many of these future costs to road administrations and users.