Properties of Crushed Red-Bed Soft Rock Mixtures Used in Subgrade

Figure 2

Microscopic structure diagram of representative red-bed soft rock.

(a) Fine-silty structure

(b) Silty structure

(c) Cryptocrystalline structure

(d) Argillaceous fine structure

(e) Pebbly silty-calcareous-argillaceous structure

(f) Argillaceous structure