SOUTH AFRICAN NATIONAL ROADS AGENCY LTD Pavement Research

Approach to Technology Development & Diffusion Infrastructure Cluster Infrastructure Cluster Chair of Pavement Engineering Chair of Pavement Engineering Technology Transfer Centre Technology Transfer Centre Support to post-graduate students Support to post-graduate students 5-Year Plan for Pavement Research 5-Year Plan for Pavement Research

Vision and Mission of SANRAL Vision Vision To be recognised as a world leader in the provision of a superior primary road network in Southern Africa Mission Mission To be a commercially driven organisation committed to achieving its vision for the economic benefit of the Southern African community through: A highly motivated and professional team A highly motivated and professional team State-of-the-art technology State-of-the-art technology Proficient service providers Proficient service providers Promoting the user pay principle Promoting the user pay principle

Implications for 5-Year Plan Enhanced effectiveness and efficiency by integrating the performance and economic efficiency of road infrastructure with the needs it should fulfil, focussing on: Pavement design efficiency Pavement design efficiency Efficiency of performance indexes Efficiency of performance indexes Innovation in design & measurement of performance Innovation in design & measurement of performance Match between materials, technologies and techniques Match between materials, technologies and techniques

Pavement Design Efficiency Development of appropriate criteria and methods of design and whole-life performance assessment of infrastructure Development of appropriate criteria and methods of design and whole-life performance assessment of infrastructure

Efficiency of Performance Indexes Development/refinement of quality concepts (i.e. quality systems, value-for-money, fit-for-purpose, road-user satisfaction) Development/refinement of quality concepts (i.e. quality systems, value-for-money, fit-for-purpose, road-user satisfaction) Understanding of effects of indexes on maintenance & rehabilitation procedures Understanding of effects of indexes on maintenance & rehabilitation procedures Innovations concerning the indicators used in PMS and the appropriate use of APT and LTPP data. Innovations concerning the indicators used in PMS and the appropriate use of APT and LTPP data.

Innovations Searching for environmentally-friendly construction materials and appropriate application Searching for environmentally-friendly construction materials and appropriate application Promote the use of recycled and waste materials Promote the use of recycled and waste materials Harmonising the road infrastructure with the environment in which it operates Harmonising the road infrastructure with the environment in which it operates Road Safety at Construction Sites Road Safety at Construction Sites

Innovations (Cont.) Limit Road User Delays Limit Road User Delays Promote Use of Composite Pavements Promote Use of Composite Pavements Address specific Lane Loadings Address specific Lane Loadings

Vision for the 5-Year Plan Advance technology and knowledge in Pavement Engineering to be a World Leader

Mission of the 5-Year Plan Through a structured and strategic research investment, in partnership with industry, to develop appropriate technology solutions for the benefit of the South African Road Network

Objectives Encouragement of greater institutional cooperation and coordination Encouragement of greater institutional cooperation and coordination Advance the implementation of performance techniques in order to counter delays in pro active improvements. Advance the implementation of performance techniques in order to counter delays in pro active improvements. Understanding what affects driver behaviour in response to information flows and demand management issues Understanding what affects driver behaviour in response to information flows and demand management issues Developing management and technology systems and solutions Developing management and technology systems and solutions Developing robust performance-based specifications, based on validated in-service performance Developing robust performance-based specifications, based on validated in-service performance

Objectives (cont.) Pursue environmentally-friendly technologies and the use of recycled & waste materials in road construction Pursue environmentally-friendly technologies and the use of recycled & waste materials in road construction Developing decision-support systems with regard to appropriate forms of construction and maintenance to yield specified performance targets Developing decision-support systems with regard to appropriate forms of construction and maintenance to yield specified performance targets Continue assessment of new forms of road infrastructure financing Continue assessment of new forms of road infrastructure financing

Objectives (cont.) Continuing to develop effective performance management frameworks and associated tools Continuing to develop effective performance management frameworks and associated tools Develop whole-life costing criteria for structural and social benefits. Develop whole-life costing criteria for structural and social benefits. Promote whole – life costing techniques to validate solutions Promote whole – life costing techniques to validate solutions

Key Solution: South African Pavement Design, Analysis and Decision Support System (SAPDADS) Demand:  Stakeholder inputs;  Traffic loading & contact stresses;  Environmental factors. Supply: Road pavements and road construction materials:  Property characterisation;  Appropriate specifications;  Construction processes;  Acceptance control.  PMS outputs  Actual loading on pavement Performance Modelling & Calibration:  Pavement design approach (new & rehabilitation);  Integration with pavement management & performance models;  Calibration of models.  Comparisons between actual and predicted (design versus performance). Key Solution: SAPDADS

Phased Approach Planning Phase Planning Phase 3 months 3 months Development of Business Plan Development of Business Plan High-Gain Phase High-Gain Phase Approximately 3 years Approximately 3 years Preliminary outcomes by 2003 Preliminary outcomes by 2003 Enhancement Phase Enhancement Phase Approximately 2 years Approximately 2 years Refinement, validation, packaging & transfer Refinement, validation, packaging & transfer Final outcomes by 2005 Final outcomes by 2005

Expected outcomes Stress-in-motion technology to enhance pavement design systems Stress-in-motion technology to enhance pavement design systems Identification & risk quantification, identification & optimisation modules integrated into material design, pavement design & road network management systems Identification & risk quantification, identification & optimisation modules integrated into material design, pavement design & road network management systems Performance-related material design systems Performance-related material design systems

Expected outcomes (cont.) Recommendations on the beneficiation of road building materials and on the use of recyclable and waste materials in road construction & rehabilitation Recommendations on the beneficiation of road building materials and on the use of recyclable and waste materials in road construction & rehabilitation Revised transfer functions for fatigue & permanent deformation Revised transfer functions for fatigue & permanent deformation SA Pavement design, analysis & decision support system (SAPDADS) SA Pavement design, analysis & decision support system (SAPDADS)

Coordinated Approach towards Pavement Research Management TDA: Technology Development Area Pavement Research Management Group (PRMG) Steering Committee Road Pavements Forum(RPF) Interest Groups (SAACE, ASPASA, C&CI, Sabita, etc) TDA1 Leader TDA2 Leader TDA3 Leader TDA4 Leader TDA5 Leader Project Tasks Implementation of Systemand Transfer to Higher Education (local &International) Advisory Groups Advisory Groups Advisory Groups Advisory Groups Advisory Groups Funders Committee Approval of Direction & Outputs Advisory & Soundboard