compaction- partciles cohere to a solid with defined geometry. requires compression. compression- particles forced into close proximity, may not nesacarlly result in compaction
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what is compaction cycle
dies filled, compression via punches, ejection
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what is elastic recovery
after compression. low cohesion and no compaction. particle deformation disapears and orignial state recovered
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what is plastic deformation
after compression, high cohesion and compaction, deformation remains
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describe the four particle properties
- amorphous mores compactable than crystaline. morphology- needle like less compactable than equidimensional plasicity- deformation increases contact area so prevents elastic recovery. hydrates- more compactable than anhydrous
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heckle equation use
links porosity and pressure and can plot a linear graph from it
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what is tensile strength and what is it effected by
measures interparticular bonds, higher means more resistant to crushing. effected by diameter, thickness and compression force
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