Tag
#quality-control
2 topics across all disciplines.
Testing refractory — the five quality control tests and what each proves
Density, cold crushing strength, permanent linear change, abrasion loss and workability index — what each measures, why the testing laboratory must be independent of the refractory contractor, and why a gunned specimen is crushed in a different direction from a cast one.
Inspecting an installed refractory lining — and repairing it properly
What an inspector looks for once the material is on the wall, why hammer test criteria come from the specification rather than the standard, and the repair rules that matter most — cut out entirely, never build up over existing material, and get the method approved first.