Monday, 23 June 2014 00:00

S812: Road Maintenance

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No economy can be sustainably vibrant without good roads

S812 photo1Our roads are a key asset to the South African Economy. It plays a sizeable role in our ability to produce and distribute. And it also gives us the ability to commute fast from place to place. The road system can thus rightly be described as a national asset. The quality of the roads determines the speed and safety with which people and goods can move. It is thus a key element in creating wealth.

Large parts of our road network fell into disrepair over the last 20 years. One of the reasons for this is the change in goods/material transport strategy. It was decided in the late 80's to change from largely rail transport to mainly road transport. Another reason for this state of affairs is a lack of proper road maintenance.

This situation needs to be dealt with soon. It will need a mixed strategy. The first component of such strategy will need to be road repair / road rebuilding. Where repair is still viable it should be the chosen option. But where the road's structure has been damaged, it will have to be rebuilt. The second part of such mixed plan of action calls for a program of preventive maintenance. This is vital to prevent a future recurrence of this state of affairs.

S812 photo2A blend of road surface restoration and preventive maintenance will have three effects. It will firstly help to allow people and goods to move safely. Secondly, it will ensure that our road network is kept in a good condition. Lastly, it will keep the long term cost of roads to the economy at an acceptable level.

A good road surface preventive maintenance scheme is made up of a whole range of methods. The goal of these are to increase road surface life in a cost effective and efficient way. A scheme with the right mix of strategies can result in an ongoing good road surface condition. This concept, as simple as it seems, has not been fully accepted by road authorities. They thus opt for reactive repairs rather than for prevention.

The course addresses the following areas:

  • Maintenance Principles
  • Road Design
  • Road Pavement Repairs
  • Preventive Maintenance of Roads
  • Road Condition Assessment
  • Implementing and using a Road Condition Database

Road condition inspection plays a key role in road maintenance. It is the main input prompting preventive action. It is covered for both flexible (i.e. asphalt) and rigid (i.e. concrete) surfaces.

S812 photo3Guidelines are amongst others also provided for:

  • Sealing of cracks• Patching and pothole repairs
  • Spray patching
  • Repairs to storm drainage ducts
  • Service trenches
  • Repairs associated with service access openings
  • Partial and full-depth repairs

Recommendations are practical - it centres on methods and products that are effective and improve road surface life.

Course Content

 

 Day 1 - Maintenance Principles

  • The maintenance Function in Context
  • Principles of Preventive Maintenance
  • Effectiveness of Preventive Maintenance
  • Maintenance Strategies

Road Design

  • Types of roads
  • Design of local roads

Road Pavement Repairs: General

Road Pavement Repairs: Flexible Pavements

  • Crack Treatments
  • Surface Treatments
  • Pothole Patching and Repair

Preventive Maintenance I

  • Introduction to Preventive Maintenance
  • Types of Preventive Maintenance
  • Crack & Joint Sealing
  • Chip Seal
  • Micro Surfacing
  • Overband Crack Fill
 

Day 2 - Road Pavement Repairs: Rigid Pavements

  • Repair Materials
  • Full Depth Repair
  • Partial Depth Repair
  • Slabjacking
  • Subsealing
  • Asphalt Undersealing
  • Diamond Grinding
  • Load Tranfer Restoration
  • Polymer Concrete

Preventive Maintenance II

  • Scheduling Preventive Maintenance
  • Selecting Preventive Treatments

Road Condition Assessment

  • Distress Identification and Severity
  • ASTM D-6433 07 Standard for Pavement
  • Condition Index Surveys

Road Condition Database

  • Road Inspection
  • Pavement Rating System
  • Road Database Software

 

Who Should Attend

The course is designed to address specific needs of those who manage and oversee road pavement maintenance activities, select maintenance treatments, specify maintenance techniques and materials, supervise field maintenance operations, and provide quality
assurance.

Credits 6*, level 5**                      

* The course comprises 30 hours of study, of which 16 hours are in class, with a further 14 hours for the assignment.

**Occupational Certificate level

 

 

 

Read 1914 times Last modified on Tuesday, 10 January 2017 16:58