Mechanical Properties of Weathered Feldspar Sandstone after Experiencing Dry-Wet Cycles

Table 1

Average relative content of the minerals of the feldspar sandstones.

Feldspar sandstones	Average relative content of minerals (%)
	Quartz	Potassium sodium feldspar	Kaolinite	Illite
Yungang Grotto statue	51	41	5	3
Experimental samples	51	40	7	2