A Quaternary Ammonium Salt as a Stabilizing Agent in Vicksburg Loess Soil.
ARMY ENGINEER WATERWAYS EXPERIMENT STATION VICKSBURG MS
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Recent studies of the effects of large organic cations on altering certain physical properties of soil have indicated the potentialities of these compounds as soil stabilizing agents. This investigation was conducted to gain further information on the suitability of such additives for use by the Corps of Engineers. Laboratory tests were made of Vicksburg loess soil treated with various amounts of a quaternary ammonium salt to determine moisture absorption, density, and strength of the treated specimens. Test results showed that the air-dried strentgh of the treated soil was significantly less than that of the untreated soil however, the rewet strength, water absorption, swelling, shrinkage, and slaking characteristics were improved. An optimum admixture for maximum effectiveness of the additive was found. The necessity for appreciable drying of the treated soil before any improvement in soil stabilization is effected precludes the use of this admixture in the field. However, the improvement realized in many soil characteristics suggests that further investigation of fatty quaternary ammonium compounds of this type as soil stabilizers might be desirable. Author
- Soil Mechanics