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