A layered rock mass is a special type of geological body. The existence of a bedding surface may lead to a poor cutting effect (over/under-excavation of the surrounding rock), falling of blocks, or ...

Figure 2 shows the X-ray diffractograms of (a) white (WP) and (b) cream phyllite (CP) as received and their 2, 4 and 6 h of calcination products. Most of the kaolinite related peaks disappear for the ...