Study on Treatment of Loess Landslide Based on Nanosilica and Fly Ash Composite Stabilizer Filling Fissures

Table 3

Testing results of the ST tests.

Test	Material code	Matric suction	σ3–ua (kPa)	qf (kPa)	C (kPa)	Φ (°)
ST1	—	180	50	267	59 3	28 2
			100	313
			200	489
			400	657
ST2	A1	344	50	310	67.1	29.6
			100	386
			200	503
			400	889
	A2	380	50	525	88.7	34.6
			100	677
			200	794
			400	1116
	A3	395	50	633	93.6	37.8
			100	726
			200	984
			400	1315
	B1	367	50	456	72.6	30.7
			100	529
			200	705
			400	981
	B2	392	50	623	94.8	36.0
			100	778
			200	913
			400	1283
	B3	400	50	704	100.6	38.3
			100	810
			200	1022
			400	1387

q_f is deviator stress when failure, C is cohesion, Φ is internal friction angle, A is materials containing 3% nanosilica, and B is materials containing 5% nanosilica.