Understanding Concrete Defects,
Diagnosis and Repair

INTENDED FOR
Technicians and Engineers who need a basic understanding or revision of concrete deterioration mechanisms,
methods of diagnosis, and techniques for concrete repair. The course is intended as a stand alone course or can be
combined with our course on Concrete for Engineers and Contractors, to make a 2 day course.
MAX PARTICIPANTS - 10-15
THE SPEAKER
Professor Michael Grantham BA EurChem CChem FRSC IEng MCQI CQP MICT
Mike has worked for several of the major testing houses in a career spanning some 30 years. He has been involved
in a considerable amount of testing work on bridges and other heavy structures such as; car parks, office
buildings, multi-storey flats, down to small scale problems with prc housing. He is a Visiting Professor at Queen's
University, Belfast, lecturing on their concrete durability course.
TARGET BENEFITS
After the course, participants will have an understanding of deterioration mechanisms for concrete, methods for
diagnosis of these problems, including some of the newer techniques such as linear polarisation, radar, infra red
thermography etc. They will understand how these techniques are applied in diagnosis, how concrete repairs can
effectively deal with the problems.
| 9.00 |
Registration
and Coffee |
| 9:30 |
What is concrete: constituents, cement, aggregates, steel, admixtures.
Special problems arising from the use of materials. Carbonation of concrete, calcium chloride,
high alumina cement. |
| |
Recognising concrete defects: Structural cracks, reinforcement corrosion,
alkali silica reaction, frost damage, shrinkable aggregates, chemical attack, fire damage, poor
quality construction, plastic cracking - plastic settlement and plastic shrinkage
cracks. |
| 10:30 |
Coffee |
| 11:00 |
Investigation of defects - the Two Stage Approach |
| |
Desk study, visual surveys, covermeter survey, ultrasonic pulse velocity surveys,
sampling by coring and dust drilling, chemical analysis, determining compressive strength,
petrographic examination, rebound hammer, other near to surface tests - the Windsor Probe, the
LOK test, break off tests, sub surface radar, infra red thermography. |
| 12:30 |
Questions and discussion |
| 1:00 |
Lunch |
| 2:00 |
Testing for reinforcement corrosion: Half cell potential, resistivity, linear
polarisation measurements to determine corrosion rate of steel (section loss per
year). |
| 3:00 |
Tea |
| 3:30 |
Concrete repairs: the patch repair approach - when to use and when not to use
it, understanding the cost implications and remeasurement. Electrochemical repair: cathodic
protection, realkalisation and desalination. What they do, how they work, practical experience.
Corrosion inhibitors, what they are and do they work? |
| 4:45 |
Questions and discussion |
| 5:00 |
Course closes |
All delegates will be given a certificate of attendance. Full and detailed course notes, with
photographs and illustrations are provided on CD-ROM (80+ pages).
|