Experimental Study on Thermal Conductivity of Organic-Rich Soils under Thawed and Frozen States

Figure 7

Three-phase diagram of unit volume of soil with different soil organic matter content and varied soil moisture saturation. Notes. (1) From (a)→(b)→(c), (d)→(e)→(f), and (g)→(h)→(i): with the increase of soil organic matter content, the contact state changes between soil particles. (2) From (a)→(d)→(g), (b)→(e)→(h), and (c)→(f)→(i): as soil moisture saturation increases, bonded water and water membrane begin to form around soil particles, and soil particle-water bridge is built. (3) From (g–i): when soil moisture saturation further increases, almost all open pores are filled with water.

(a)

(b)

(c)

(d)

(e)

(f)

(g)

(h)

(i)