粉粒体の水中沈積物の粒子間結合力について
粉粒体の水中沈積物の特性に関する研究 (第2報)
1975 年 91 巻 1054 号 p. 773-777
詳細
1975 年 91 巻 1054 号 p. 773-777
In the previous report it was shown that the structure of solid particles settled in water depends upon the bonding force at the contact point of particles and that the bulk density depends directly upon the mono-valent electrolyte concentration in system of SiO2 particles and aqueous solution.
In the present report it is shown that the bulk density does not always depend on the poly-valent electrolyte concentration. It is impossible to explain smoothly these phonomenon without considering friction and adhesion. In this case adhesion refers to the resistant force in the vertical direction when the particles are separated in water. This force depends on the mutual action between Van der Waals attractive force and electric double layer.
Friction is resistant force in parallel direction when the particles are moved. This force depends on the boundary hydrated layer at solid-water interface.
