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SOUTH AFRICAN NATIONAL ROADS AGENCY LTD
Pavement Research
2000 - 2005
Approach to Technology Approach to Technology Development & DiffusionDevelopment & Diffusion
Infrastructure ClusterInfrastructure Cluster Chair of Pavement EngineeringChair of Pavement Engineering Technology Transfer CentreTechnology Transfer Centre Support to post-graduate studentsSupport to post-graduate students 5-Year Plan for Pavement Research5-Year Plan for Pavement Research
Vision and Mission of Vision and Mission of SANRALSANRAL
VisionVisionTo be recognised as a world leader in the provision To be recognised as a world leader in the provision of a superior primary road network in Southern of a superior primary road network in Southern AfricaAfrica
MissionMissionTo be a commercially driven organisation To be a commercially driven organisation committed to achieving its vision for the economic committed to achieving its vision for the economic benefit of the Southern African community through:benefit of the Southern African community through: A highly motivated and professional teamA highly motivated and professional team State-of-the-art technologyState-of-the-art technology Proficient service providersProficient service providers Promoting the user pay principlePromoting the user pay principle
Implications for 5-Year PlanImplications for 5-Year Plan
Enhanced effectiveness and efficiency by Enhanced effectiveness and efficiency by integrating the performance and economic integrating the performance and economic efficiency of road infrastructure with the needs it efficiency of road infrastructure with the needs it should fulfil, focussing on:should fulfil, focussing on: Pavement design efficiencyPavement design efficiency Efficiency of performance indexesEfficiency of performance indexes Innovation in Innovation in design & measurement of design & measurement of
performanceperformance Match between materials, technologies and Match between materials, technologies and
techniquestechniques
Pavement Design EfficiencyPavement Design Efficiency
Development of appropriate criteria Development of appropriate criteria and methods of design and whole-life and methods of design and whole-life performance assessment of performance assessment of infrastructureinfrastructure
Efficiency of Performance IndexesEfficiency of Performance Indexes Development/refinement of quality Development/refinement of quality
concepts (i.e. quality systems, value-for-concepts (i.e. quality systems, value-for-money, fit-for-purpose, road-user money, fit-for-purpose, road-user satisfaction)satisfaction)
Understanding of effects of indexes on Understanding of effects of indexes on maintenance & rehabilitation proceduresmaintenance & rehabilitation procedures
Innovations concerning the indicators used Innovations concerning the indicators used in PMS and the appropriate use of APT and in PMS and the appropriate use of APT and LTPP data.LTPP data.
InnovationsInnovations
Searching for environmentally-friendly Searching for environmentally-friendly construction materialsconstruction materials and appropriate and appropriate applicationapplication
PromotePromote the use of recycl the use of recycleded and waste and waste materialsmaterials
Harmonising the road infrastructure Harmonising the road infrastructure with the environment in which it with the environment in which it operatesoperates
Road Safety at Construction SitesRoad Safety at Construction Sites
Innovations (Cont.)Innovations (Cont.)
Limit Road User DelaysLimit Road User Delays Promote Use of Composite PavementsPromote Use of Composite Pavements Address specific Lane LoadingsAddress specific Lane Loadings
Vision for the 5-Year PlanVision for the 5-Year Plan
Advance technology and knowledge in Advance technology and knowledge in Pavement Engineering to be a World Pavement Engineering to be a World
LeaderLeader
Mission of the 5-Year PlanMission of the 5-Year Plan
Through a structured and strategic Through a structured and strategic research investment, in partnership research investment, in partnership
with industry, to develop appropriate with industry, to develop appropriate technology solutions for the benefit of technology solutions for the benefit of
the South African Road Networkthe South African Road Network
ObjectivesObjectives Encouragement of greater institutional cooperation and Encouragement of greater institutional cooperation and
coordinationcoordination Advance the implementation of performance techniques Advance the implementation of performance techniques
in order to counter delays in pro active improvements.in order to counter delays in pro active improvements. Understanding what affects driver behaviour in response Understanding what affects driver behaviour in response
to information flows and demand management issuesto information flows and demand management issues Developing management and technology systems and Developing management and technology systems and
solutionssolutions Developing robust performance-based specifications, Developing robust performance-based specifications,
based on validated in-service performancebased on validated in-service performance
Objectives (cont.)Objectives (cont.) Pursue environmentally-friendly Pursue environmentally-friendly
technologies and the use of recycled & technologies and the use of recycled & waste materials in road constructionwaste materials in road construction
Developing decision-support systems with Developing decision-support systems with regard to appropriate forms of construction regard to appropriate forms of construction and maintenance to yield specified and maintenance to yield specified performance targetsperformance targets
Continue assessment of Continue assessment of new forms of road new forms of road infrastructure financinginfrastructure financing
Objectives (cont.)Objectives (cont.)
Continuing to develop effective Continuing to develop effective performance management frameworks and performance management frameworks and associated toolsassociated tools
Develop whole-life costing criteria for Develop whole-life costing criteria for structural and social benefits.structural and social benefits.
Promote whole – life costing techniques to Promote whole – life costing techniques to validate solutions validate solutions
Key Solution:Key Solution: South African Pavement South African Pavement Design, Analysis and Design, Analysis and Decision Support Decision Support
System (SAPDASystem (SAPDADDS)S)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 ApproachPhased Approach
Planning PhasePlanning Phase 3 months3 months Development of Business PlanDevelopment of Business Plan
High-Gain PhaseHigh-Gain Phase Approximately 3 yearsApproximately 3 years Preliminary outcomes by 2003Preliminary outcomes by 2003
Enhancement PhaseEnhancement Phase Approximately 2 yearsApproximately 2 years Refinement, validation, packaging & transferRefinement, validation, packaging & transfer Final outcomes by 2005Final outcomes by 2005
Expected outcomesExpected outcomes Stress-in-motion technology Stress-in-motion technology to enhance to enhance
pavement design systems pavement design systems Identification & rIdentification & risk quantificationisk quantification, ,
identificationidentification & optimisation modules & optimisation modules integrated into material design, pavement integrated into material design, pavement design & road network management design & road network management systemssystems
Performance-related material design Performance-related material design systemssystems
Expected outcomes (cont.)Expected outcomes (cont.)
Recommendations on the beneficiation of Recommendations on the beneficiation of road building materials and on the use of road building materials and on the use of recyclable and waste materials in road recyclable and waste materials in road construction & rehabilitationconstruction & rehabilitation
Revised transfer functions for fatigue & Revised transfer functions for fatigue & permanent deformationpermanent deformation
SA Pavement design, analysis & SA Pavement design, analysis & decision decision support support system (SAPDA system (SAPDADDS)S)
Coordinated Approach towards Coordinated Approach towards Pavement Research Pavement Research ManagementManagement
TDA:TDA:TechnologyTechnology
DevelopmentDevelopment
AreaAreaPavement 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