Hierarchy classification:

1. top of the aat hierarchies
2. Activities Facet
3. Processes and Techniques (hierarchy name)
4. [processes and techniques by specific type]

Narrower term/s

• bleeding (seeping)
• deterioration[+]
  • decomposition [+]
    • denaturation
    • depolymerization
    • chain scission
  • disintegration [+]
    • electric pulse disaggregation
  • biodeterioration
  • degradation [+]
    • photodegradation
    • vinegar syndrome
    • thermal degradation
    • biodegradation
  • arrested decay [NP]
  • natural decay
• embrittlement
• devitrification
• color changes[+]
  • discoloration [+]
    • yellowing
    • blue stain [NP]
    • soiling
    • darkening
  • fading
  • sulfiding
• size-related changes[+]
  • contraction (size-related change) [+]
    • shrinkage
  • expansion (process or technique) [+]
    • thermal expansion
  • swelling
• surface or structural changes[+]
  • curling (structural change)
  • chipping
  • crumbling
  • corrosion (condition changing process) [+]
    • electrochemical corrosion
    • atmospheric corrosion
  • weathering [+]
    • alveolar weathering
    • accelerated weathering
    • freeze-thaw cycle
    • salt weathering [+]
      • contour scaling
    • sulfation
    • sugaring
    • carbonation [NP]
  • erosion [+]
    • mass wasting [NP] [+]
      • solifluction
    • microerosion
    • bioerosion
  • blistering (process)
  • cracking [+]
    • cupping
    • crackling
    • strain cracking
    • dunting
  • peeling [+]
    • delamination
    • flaking
  • pitting
  • wrinkling
  • buckling [+]
    • lateral buckling
    • elastic buckling
    • inelastic buckling
  • warping (structural change) [+]
    • bowing
  • cockling
  • creasing (process)
  • tenting
  • crumpling
  • tearing
  • lifting (surface changing process)
  • throw up (surface change)
  • livering
  • popping
  • bloating
  • softening
  • patination
  • bioturbation
  • powdering (condition changing process)
  • opacification
  • teasing (structural change)
  • isomerization
  • chalking
  • wetting-drying cycle
  • denting (surface changes)
  • case hardening (rock surface change)
• salinization
• carbonation
• rot
• dissolution (physical process)[+]
  • deliquescence
• fossilization
• solidification
• kaolinization
• interpolation
• gelatinization

Anotations

Scope note:

Collocates descriptors for processes that alter the condition of an object or structure; some descriptors collocated here are both such a process and the resultant effect on the item.