Recent advances in the geotechnics of organic soils and peat - Geotechnics of Organic Soils and Peat - page 182

Figure 7.12 Variation of total volume of water drained with electroosmotics ( after Kaniraj et al ., 2011).
Figure 7.13 Variation in the undrained strength of organic soils ( after Kaniraj andYee, 2011).
7.4 ELECTROKINETIC STABILIZATION OF ORGANIC
SOILS AND PEAT
In peats with lower organic content, clay-organic complexes and the formation of
stable aggregates are key components of peat stabilization. Several bonding forces may
operate between humus and clay minerals, including cation bridging, water bridging,
anion exchange, ligand exchange and van der Waals forces (Stevenson, 1994). Since
organic anions are normally repelled from negatively charged clay surfaces, adsorption
of humus by clay minerals occurs only when polyvalent cations are present on the