The corrosion of reinforcing and prestressing steel in concrete structures caused by stray currents. The history of stray-current corrosion, sources, mechanisms, effects on structures, detection and mitigation.
Explores the trend of the increasing number of reported incidents of alkaline carbonate stress corrosion cracking (ACSCC) since the year 2000. Locations. Theories. Mitigation. Inspection. Industy survey results.
Corrosion mechanisms in refinery crude distillation unit (CDU) distillation tower overhead systems and current industry practices for mitigating or controlling this corrosion.
The theoretical basis for the 100 millivolt (mV) cathodic polarization criterion. Effects of other factors such as temperature, mill scale, moisture, and anaerobic bacteria, polarization.
Corrosion associated with alternating current (AC) interference on buried steel pipelines. AC corrosion characteristics and proposed mechanisms. Approaches to protection and monitoring.
Corrosion phenomenon associated with alternating current (AC) interference on buried steel pipelines. Cathiodic protection. Mechanisms. Monitoring.
Assessing corrosion in the field. New: long-range ultrasonic testing (UT), fiber optic strain gauges; high-resolution electrical resistance (ER), a new method of hydrogen probe monitoring, and extended-analysis coupons.
Case histories show that non-visible contamination may result in rapid coating failure. Physical and chemical tests to detect same. Remediation measures. Reagents, materials, tools, procedures & results.
The use of coatings in service environments where soluble salt contamination of the substrate is suspected. Detection, removal, and testing. Cost-to-benefit ratio.