Corrosion Short Courses: An Advanced Course in Concrete Durability

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An Advanced Course in Concrete Durability

Course Overview

The corrosion of reinforcing steel in concrete structures such as buildings, car parks, concrete marine structures, road beds, bridge decks and bridge substructures is a world-wide problem and leads to cracking, staining, spalling from the surface and ultimately structural weakness. This 5-day advanced course thoroughly and systematically covers the concrete durability issues: the causes of reinforcement corrosion, common control and prevention methods for both old and new structures, surveying and diagnosing techniques for condition assessment, the conventional and some promising emerging technologies for repair and rehabilitation of concrete structures. Participants will gain essential knowledge and skills in managing corrosion in concrete structures. Engineers, architects and designers will grasp the theories and practices of corrosion control and prevention which would lead to corrosion-proof designs and low cost durability. Participants will also learn the principles and applications of advanced corrosion sensors and monitoring systems for life prediction, repair and rehabilitation, surveying, diagnosis and condition assessment. Facility owners will benefit from increased durability, enhanced safety and reduced maintenance costs.

This corrosion short course can be taken as in-house training course, online course and distance learning course worldwide. It can also be customized to meet the specific needs of your organization.

Course Outline

1. Corrosion and concrete durability
1.1 Impact of corrosion on society
1.2 Factors influencing concrete durability

2. Terminology and conventions
2.1 corrosion, pH, potential, reference electrode, potential-pH diagram
2.2 passivation, passive rebar, depassivation, anode, cathode, cathodic protection,
galvanizing, carbonation, etc.

3. Why & How does rebar corrode in concrete?

3.1 corrosion of steel in aqueous environment
3.2 the nature of concrete environment
3.3 corrosion of steel in concrete
3.4 actions from aggressive species chloride, carbon dioxide, sulphate, soft water action
3.5 potential difference
3.6 corrosion reactions
3.7 ionic flow
3.8 autocatalytic process
3.9 Type of reinforcement corrosion: general/uniform, pitting, concentration cells, differential aeration
cells, galvanic cells, stray current corrosion, microbiologically influenced corrosion (MIC)

4. How to control and prevent concrete corrosion
4.1 concrete quality, porosity, permeability, depth of cover, water/cement ratio, chloride content
4.2 patching practices
4.3 membranes and sealers
4.4 corrosion inhibitors
4.5 epoxy coating
4.6 galvanizing (zinc coating)
4.7 cathodic protection: principles of cathodic protection, standards,
      criteria of protection, design of cathodic protection systems, installation practices,
      operation and maintenance, testing and monitoring

5. Surveying and diagnosing
5.1 Introduction: the need for survey and diagnosis
5.2 Non-destructive structural surveys
    5.2.1 Visual and physical appraisal
    5.2.2   Resistivity mapping: principles and data interpretation
    5.2.3   ASTM C876 Half-Cell potential survey/mapping: principles and data interpretation
    5.2.4   Electrochemical techniques for corrosion rate measurements:
                LPR, EIS, principles and data inpterpretation
    5.2.5   Determining the remaining rebar diameter
    5.2.6   Determining rebar condition: passive or depassivated, polarization measurements
5.3 Depth of carbonation
5.4 Chloride contents

6. Testing and Monitoring
6.1 The Need for Corrosion Testing and Monitoring in Concrete Structures
    6.1.1       Assessment of the Extent of Corrosion Damage
    6.1.2       Determing the Rate of Corrosion Damage
    6.1.3       Early Warning -Monitoring the Rate of Corrosion Damage
    6.1.4       Evaluating the Effectiveness of Repair/Rehabilitation
6.2 The Nature of Corrosion Process in Concrete Structures
    6.2.1       Physical Changes Due to Corrosion
    6.2.2       Chemical Changes Due to Corrosion
    6.2.3       Corrosion Rate and Current Density
6.3 Indirect Methods for Corrosion Testing and Monitoring
    6.3.1       Depth of carbonation
    6.3.2       Depth of chloride penetration
    6.3.3       Electrical resistance (ER probe)
    6.3.4       Concrete resistivity
    6.3.5       Half-cell potential mapping (ASTM standard C876)
    6.3.6       pH, Temperature
    6.3.7       Moisture
6.4 Direct Methods for Corrosion Testing and Monitoring
    6.4.1       Linear polarisation resistance measurement
    6.4.2       Potentiodynamic polarization
    6.4.3       AC Impedance measurement
    6.4.4       Electrochemical noise measurement
6.5 Design of Corrosion Sensors in Concrete Structures
    6.5.1       Overview of sensor designs
    6.5.2       Interfaces with sensors
    6.5.3       Types of sensors
    6.5.4       Principles of LPR-based sensors
    6.5.5       Principles of ZRA-based sensors
    6.5.6       Advantages and limitations
    6.5.7       Monitoring system and components
    6.5.8       The new generation of sensors for early warning and life prediction
    6.5.9       Cost considerations

7. Repair and Rehabilitation
7.1 Corrosion and concrete durability
7.2 Factors influencing corrosion of reinforcement in concrete structures
7.3 Conventional methods of concrete repair/rehabilitation
    7.3.1       patch repair and the incipient anode effect
    7.3.2       membranes and sealers
    7.3.3       corrosion inhibitors
    7.3.4       epoxy coating
    7.3.5       galvanizing
7.4 Innovative Cathodic Protection Systems for Concrete Repair and Rehabilitation
    7.4.1       Principles of cathodic protection
    7.4.2       Sacrificial anode CP
    7.4.3       Pressure-sensitive Zinc-Hydrogel anode
    7.4.4       Snap-on zinc mesh anode CP system
    7.4.5       Impressed current CP
    7.4.6       Anode design
    7.4.7       Electrodes selection
    7.4.8       Installation
    7.4.9       Life expectancy and calculations
    7.4.10    Case study
    7.4.11    Applications
7.5 Chloride Extraction For Concrete Repair and Rehabilitation
    7.5.1       Principles of chloride extraction
    7.5.2       System setup and operating parameters
    7.5.3       Assessment of effectiveness
    7.5.4       Applications
7.6 Electrochemical Realkalisation For Concrete Repair and Rehabilitation
    7.6.1       Principles of electrochemical realkalisation
    7.6.2       System setup and operating parameters
    7.6.3       Assessment of effectiveness
    7.6.4       Applications
7.7 Conductive Concrete
    7.7.1       The nature of conductive concrete
    7.7.2       Conductive concrete in cathodic protection
    7.7.3       Case studies
    7.7.4       Applications
7.8 Stainless Steels and Alloys Reinforcements
    7.8.1       The fundamental difference between black rebar and stainless steel rebar
    7.8.2       Type of stainless steels and alloys
    7.8.3       Mechanical properties of stainless steels and alloys
    7.8.4       Corrosion resistance of stainless steels and alloys
    7.8.5       Cost comparison
    7.8.6       Case studies
    7.8.7       Applications
7.9 Ranking of The Emerging Technologies For Corrosion Control In Concrete Structures
7.10 Techniques to monitor the effectiveness of repair/rehab strategies

Who Should Attend

Engineers, architects and designer who are concerned with the durability and corrosion of reinforced concrete structures
Building inspectors and surveyors who are interested in corrosion damages in concrete structures
Technicians and maintenance personnel who deal with repair and rehab of reinforced concrete structures
Facility owners and users who are concerned with corrosion and method of mitigation

Registration for This Corrosion Course

Click here to register for this corrosion course online, or
Click here to download this corrosion course brochure with registration form in PDF format.

In-House Training Corrosion Courses

If you are concerned with corrosion in your business, in-house training is a great solution to train a group of employees from design, production, operation, quality assurance, inspection and maintenance, and technical sales and support on corrosion control and corrosion prevention technology. The contents of all corrosion courses can be customized to fit your organization's needs.

There is no minimum or maximum number of participants required for in-house training corrosion courses. We conduct the in-house training corrosion course at your company's premises and at a time convenient to your company. Requests for in-house training corrosion courses from overseas countries are also welcome.

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Corrosion Course-On-Demand

All our publicly scheduled corrosion short courses are conducted once a year. However, you do not need to wait for one year if you have missed any of the publicly scheduled corrosion courses as we have this unique corrosion course-on-demand scheme: we will conduct the course just for you on an one-on-one basis at a time and in a location convenient to you. This option costs significantly less than a full-scale in-house training program.

Click here to contact us for a quotation for taking this course as course-on-demand.

Online and Distance Learning Corrosion Courses

All corrosion courses can be conducted through online or distance learning. An username and password will be emailed to course participants for accessing the online course materials. Alternatively, a CD-ROM containing the same online course material or a master hard copy of corrosion course notes can be sent to your organization. Instructions, course assignments, discussions and questions related to the corrosion courses are posted on the website. Free email support for online courses is provided for a period up to 12 months. A Certificate of Completion will be issued to participants who pass the online test with a score of 70% and above.

Click here to register this corrosion short course for online or distance learning.

PowerPoint Slides and Test Banks for Trainers, Instructors, Tutors, University Lecturers and Professors

If you are involved in teaching corrosion courses, you may wish to purchase a complete set of PowerPoint slides and the computerized test banks (in MicroTest format) with solutions. These presentations are suitable for teaching corrosion courses at different levels (from undergraduate to postgraduate) and durations (from 6 hrs to 40 hrs). These ready-to-use corrosion PowerPoint slides contain high quality color photographs, illustrations, animations and video clips. They can also be easily edited and customized to your own styles. The corrosion test banks contain over 1,000 corrosion questions for your use in tutorials, tests or examinations. These questions are conveniently grouped into 4 categories in the test bank: (1) true or false, (2) multiple choice, (3) calculation, and (4) reasoning and open-ended discussions).

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