Bifalgorithm post · Introduction to soil science · Phyllosilicate Colloids and their Surface Chemistry

Phyllosilicates Swell

Phyllosilicates Swell (Introduction to soil science · Phyllosilicate Colloids and their Surface Chemistry) — "Water can enter the interlayers of some 2:1 phyll…

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  • Water-driven swelling in 2:1 phyllosilicates affects soil and foundation behavior
  • Water can enter the interlayers of some 2:1 phyllosilicates
  • Interlayer water causes the layers to expand
  • Different minerals exhibit different degrees of swelling
  • Vermiculite swells moderately
  • Smectite can swell substantially
  • Smectite expands strongly because its interlayer cations do not hold the layers tightly together
  • Swelling and shrinkage produce important physical consequences
  • They affect soil structure
  • They affect soil permeability
  • They affect root growth
  • They affect foundation stability
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Phyllosilicates Swell

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Introduction to soil science

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"Water can enter the interlayers of some 2:1 phyllosilicates, causing the layers to expand. Vermiculite swells moderately, while smectite can swell substantially because its interlayer cations do not hold the layers tightly together. Swelling and shrinkage affect soil structure, permeability, root growth, and foundation stability."

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