Table 2. Triaxial test details Pre-shear...

Table 2.

Triaxial test details

		Pre-shear conditions					Ultimate state
Test number	Preparationdetails	p′: kPa	q: kPa	e	Ageing: days	Shear rate: %/h	CS*	p′†: kPa	q†: kPa	φ′: °
1	SNW-B	1762	1396	0·571	<1	0·1	No	2894	4318	36·7
2	SNW-B	1879	1648	0·585	<1	0·2	No	2523	3696	36·1
3	SNW-B	52	1	0·743	1·7	0·2	Yes	61	85	34·4
4	SNW-B	268	16	0·674	<1	0·2	Yes	515	726	34·8
5	SNW-B	1301	2	0·630	1·1	0·2	No	1228	1644	33·2
6	SNW-B	1306	3	0·670	13	0·2	Yes	713	983	34·1
7	SNW-A	805	2	0·658	1·8	0·2	Yes	649	821	31·5
8	SOM-B	1904	1815	0·629	3·7	0·2	No	1502	2029	33·5
9	SOM-B	1299	2	0·659	3·6	0·2	Yes	685	914	33·1
10	SOM-A	1295	3	0·594	3·2	0·2	Yes	2057	2877	34·6

		Pre-shear conditions					Ultimate state
Test number	Preparationdetails	p′: kPa	q: kPa	e	Ageing: days	Shear rate: %/h	CS*	p′†: kPa	q†: kPa	φ′: °
1	SNW-B	1762	1396	0·571	<1	0·1	No	2894	4318	36·7
2	SNW-B	1879	1648	0·585	<1	0·2	No	2523	3696	36·1
3	SNW-B	52	1	0·743	1·7	0·2	Yes	61	85	34·4
4	SNW-B	268	16	0·674	<1	0·2	Yes	515	726	34·8
5	SNW-B	1301	2	0·630	1·1	0·2	No	1228	1644	33·2
6	SNW-B	1306	3	0·670	13	0·2	Yes	713	983	34·1
7	SNW-A	805	2	0·658	1·8	0·2	Yes	649	821	31·5
8	SOM-B	1904	1815	0·629	3·7	0·2	No	1502	2029	33·5
9	SOM-B	1299	2	0·659	3·6	0·2	Yes	685	914	33·1
10	SOM-A	1295	3	0·594	3·2	0·2	Yes	2057	2877	34·6

Critical state: Yes = constant p′ and q attained before visible strain localisation; No = constant p′ and q not attained at end of test.

†

p′ = (⁠ $σ'_{1}$ + $σ'_{2}$ + $σ'_{3}$ ⁠)/3 (mean effective stress) and q = $σ'_{1}$ − $σ'_{3}$ (deviator stress), where $σ'_{1}$ ⁠, $σ'_{2}$ ⁠, $σ'_{3}$ are the principal effective stresses as customary.

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