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Strength of Compacted Amarillo Fine Sandy Loam as Influenced by Moisture, Clay Content, and Exchangeable Cation
Author(s) -
Mathers A. C.,
Lotspeich F. B.,
Laase G. R.,
Wilson G. C.
Publication year - 1966
Publication title -
soil science society of america journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.836
H-Index - 168
eISSN - 1435-0661
pISSN - 0361-5995
DOI - 10.2136/sssaj1966.03615995003000060036x
Subject(s) - loam , water content , soil water , bulk density , moisture , compressive strength , materials science , geotechnical engineering , soil science , composite material , geology
Unconfined compression strength of Amarillo fine sandy loam was affected by water content (at molding and at time of strength test) bulk density, clay content, and saturating cation. When dried after molding, briquettes of Amarillo fine sandy loam attained maximum strength at 3 to 6% water depending on clay content. Maximum strength was attained at approximately one monolayer of water on the total surface area suggesting that H‐bonding of water molecules contibutes to soil strength. As additional water was lost, strength decreased to a minimum at onehalf monolayer and increased again as complete dryness was approached. Shapes of the drying curves were similar regardless of the percent molding water, bulk density, clay content, or exchangeable cations. Na‐saturated soils had greater dry strength than Ca‐ or Al‐saturated soils.