How a Corrosion Investigation Works
A field-first framework for moving from a damaged asset to supported findings, useful testing, and a practical next decision.
Updated September 15, 2026Read guide
Calicore engineering resources
Corrosion Engineering Knowledge Center
Technical field guides on corrosion studies, failure investigations, soil corrosivity, galvanic behavior, coupons, coatings, materials, and resistivity testing.
Built for owners, engineers, utilities, contractors, and investigators who need to understand what corrosion evidence means—not just collect another data point.
Technical library
13 focused guides
Every page identifies the useful evidence, the limits of the method, and the related Calicore service.
What to Preserve After a Pipe Failure
The first hours after a leak or rupture can determine whether the evidence supports a useful cause assessment.
Updated September 15, 2026Read guide
Soil Resistivity Is Not a Corrosion Rate
Why one of the most useful buried-infrastructure measurements is also one of the easiest to overinterpret.
Updated September 15, 2026Read guide
Soil Corrosivity Testing: What Each Result Means
A material-specific guide to building and interpreting a soil corrosion test panel without relying on one universal label.
Updated September 15, 2026Read guide
ASTM G57 vs. ASTM G187 Soil Resistivity Testing
Field apparent resistivity and laboratory soil-box resistivity are useful for different reasons and should not be treated as interchangeable by default.
Updated September 15, 2026Read guide
Planning a Wenner Four-Pin Soil Resistivity Survey
How to match test locations and electrode spacings to the project question while working around real site constraints.
Updated September 15, 2026Read guide
Corrosion Coupon Testing: What the Results Mean
Coupon-derived average mass loss can be valuable—if the alloy, exposure, handling, and limits are documented.
Updated September 15, 2026Read guide
How to Use the Galvanic Series Correctly
A galvanic-series chart screens metal couples; it does not predict a universal corrosion rate or replace a field evaluation.
Updated September 15, 2026Read guide
The Corrosion Cell: Anode, Cathode, Electrolyte, and Path
A practical explanation of where metal loss occurs, how current completes the circuit, and what investigators look for in the field.
Updated September 15, 2026Read guide
Why Corrosion Rate Is Not a Material Constant
How to read corrosion-rate claims without confusing a system response with an intrinsic material property.
Updated September 15, 2026Read guide
How Common Construction Materials Behave in Corrosive Soil
Why the same soil test panel must be interpreted differently for steel, ductile iron, stainless, copper alloys, aluminum, zinc, and concrete.
Updated September 15, 2026Read guide
Internal vs. External Pipe Corrosion
A pipe has two exposure environments, and either—or both—can contribute to the final leak or rupture.
Updated September 15, 2026Read guide
Coating Failure or Corrosion Failure? How to Evaluate Both
A failed coating can expose metal, but the visible corrosion pattern may also reveal preparation, geometry, environment, or service problems.
Updated September 15, 2026Read guide
Project-specific judgment
General guidance is a starting point—not a site conclusion.
Calicore can define the field work, testing, records, and engineering interpretation needed for the actual material and exposure.
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