Advances in Civil Engineering

Research Article

Assessment of Stiffness and Strength Parameters for the Soft Soil Model of Clays of Cameroon

Table 2

Summary of laboratory test results on soil samples (soil samples 1–71) and statistical significance of these laboratory data.


Soil samples	Physical identification parameters
Soil samples	Type of soil	ϒ_d (kN/m³)	ϒ_s (kN/m³)	ϒ_h (kN/m³)	ϒ_sat (kN/m³)	ϒ′ (kN/m³)	e

1	Nodulated reddish clay	16.2	26.9	19.9	20.18	10.12	0.67
2	Nodulated reddish clay	16.6	27	20.3	20.45	10.43	0.63
3	Nodulated reddish clay	16.8	26	20.2	20.34	10.32	0.55
4	Nodulated reddish clay	16	26.3	19.7	19.92	9.88	0.65
5	Yellowish clay	17	26.9	20.6	20.68	10.7	0.58
6	Yellowish lateritic gravel	17.9	27.2	21.17	21.32	11.32	0.52
7	Yellowish clay	17.1	26.9	20.26	20.74	10.76	0.57
8	Brown clay	16.7	26.7	20.2	20.45	10.44	0.6
9	Yellowish clay	18	27.2	20.88	21.38	11.39	0.51
10	Altered rock in reddish lateritic clay	13.3	27.6	16.5	18.48	8.5	1.07
11	Altered rock in yellowish lateritic clay	13.7	27.1	16.4	18.64	8.64	0.98
12	Reddish lateritic clay	12.6	27.2	15.1	17.97	7.96	1.16
13	Reddish lateritic clay	13.4	26.9	16.5	18.42	8.41	1.01
14	Altered rock in reddish lateritic clay	14.4	27.7	16.9	19.2	9.27	0.91
15	Altered rock in Motley clay	15.2	26.6	17	19.49	9.49	0.75
16	Altered rock in reddish clay	15	27	16.2	19.44	9.44	0.8
17	Altered rock in Motley clay	15.5	26.3	16.9	19.61	9.59	0.7
18	Nodulated reddish clay	17.1	27	20.6	20.77	10.76	0.58
19	Nodulated reddish clay	17.7	26.5	20.7	21.02	11	0.5
20	Nodulated reddish clay	15.9	27	19.9	20.01	10	0.7
21	Nodulated reddish clay	16.9	27.5	20.6	20.75	10.74	0.63
22	Nodulated reddish clay	16	26.9	19.7	20.05	10.06	0.68
23	Nodulated reddish clay	16.4	27.1	20.2	20.35	10.36	0.65
24	Nodulated reddish clay	16.4	28	20.5	20.54	10.53	0.71
25	Nodulated reddish clay	16	26.5	19.9	19.96	9.94	0.66
26	Nodulated reddish clay	16.7	26.5	20.2	20.4	10.38	0.59
27	Yellowish clay	12.3	26.8	16.3	17.71	7.67	1.19
28	Motley clay	12.4	26.8	16.2	17.77	7.78	1.16
29	Reddish lateritic clay	14.2	26.9	17.7	18.92	8.94	0.89
30	Altered breastplate in reddish clay	14.5	26.9	17.5	19.11	9.09	0.86
31	Altered breastplate in Motley clay	13.1	26.9	16.4	18.23	8.24	1.05
32	Altered breastplate in reddish clay	14.6	26.8	18	19.15	9.18	0.83
33	Altered breastplate in reddish clay	13.1	26	16.6	18.06	8.04	0.99
34	Altered breastplate in yellowish clay	12.5	26.1	16.1	17.71	7.74	1.08
35	Reddish lateritic clay	13.2	26	16.2	18.12	8.08	0.98
36	Reddish clay gravel	20.8	28.5	23.2	23.5	13.5	0.37
37	Reddish clay gravel	20.4	28	22.9	23.11	13.14	0.37
38	Reddish clay gravel	20.1	28.3	22.9	23	12.98	0.41
39	Reddish clay gravel	20.9	28.5	23.4	23.57	13.6	0.36
40	Reddish clay gravel	20.2	28.8	22.9	23.19	13.15	0.43
41	Altered rock in Motley clay	13.2	26.4	15.6	18.2	8.24	0.99
42	Altered rock in reddish clay	13.1	26	16.4	18.06	8.04	0.99
43	Altered rock in reddish lateritic clay	13.7	26.5	17	18.53	8.51	0.94
44	Altered rock in reddish lateritic clay	13.5	26.9	16.1	18.48	8.45	1
45	Motley clay	13.9	26.4	16.4	18.63	8.63	0.9
46	Yellowish sandy clay	14.3	26.5	16.8	18.9	8.92	0.85
47	Yellowish sandy clay	14.1	26.3	16.5	18.74	8.72	0.87
48	Yellowish clay	14	26.7	16.9	18.76	8.74	0.91
49	Altered rock in yellowish clay	12.9	26.8	15.3	18.09	8.08	1.08
50	Motley lateritic clay	14.2	26.8	17.9	18.9	8.89	0.89
51	Altered rock in motley clay	12.1	26.5	16	17.53	7.5	1.2
52	Brown clay	12.9	26.4	16.2	18.01	8	1.05
53	Yellowish clay	14.1	26.9	17.1	18.86	8.85	0.91
54	Altered rock in reddish clay	12.3	26.7	16.4	17.69	7.7	1.17
55	Reddish lateritic clay	13.7	26.8	16.7	18.59	8.57	0.96
56	Motley lateritic clay	13	27.2	16.7	18.22	8.23	1.09
57	Altered rock in reddish lateritic clay	12.8	27	16.6	18.06	8.06	1.11
58	Altered rock in reddish lateritic clay	13	26.8	16.4	18.15	8.16	1.06
59	Yellowish clayed sand	15.8	25.7	18.42	19.65	9.7	0.627
60	Yellowish sandy clay	15.6	25.8	18.25	19.55	9.6	0.654
61	Yellowish sandy clay	15.3	25.6	18.66	19.32	9.3	0.673
62	Reddish clay	14.1	26.6	18	18.8	8.78	0.89
63	Altered rock in Motley clay	13	26.7	16.6	18.13	8.11	1.06
64	Altered rock in yellowish lateritic clay	12.9	26.6	16.6	18.05	8.06	1.06
65	Altered rock in Motley clay	13.9	26.7	17	18.69	8.43	0.98
66	Reddish clay	13.1	26.6	16.8	18.18	8.14	1.04
67	Reddish soft clay	12.2	26.7	16.6	17.63	7.63	1.19
68	Altered rock in reddish clay	12.5	26.6	17.5	17.8	7.79	1.13
69	Altered rock in reddish clay	11	26.7	17.1	16.88	6.84	1.44
70	Reddish clay	13.1	26.9	17.4	18.23	8.22	1.056
71	Reddish clay	13.2	26.7	17.6	18.26	8.28	1.018
	Average value	14.84	26.84	18.12	19.31	9.31	0.85
	Variance of soils samples	5.18	0.38	4.61	2.31	2.32	0.06
	Standard deviation	2.28	0.62	2.15	1.52	1.52	0.25
	Confidence interval range	12.56	26.22	15.98	17.8	7.78	0.6
		17.11	27.45	20.27	20.83	10.83	1.09
	Maximum value	20.9	28.8	23.4	23.57	13.6	1.44
	Minimum value	11	25.6	15.1	16.88	6.84	0.36
	Median value	14.1	26.8	17.1	18.86	8.85	0.89