Laboratory procedures and standards for the NGTS project

FOR THE NGTS PROJECT

DOC.NO. 20160154-02-R REV.NO. 0 / 2019-12-03

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Project title: Norwegian Geo-Test Sites (NGTS)

Document title: Laboratory procedures and standards for the NGTS project Document no.: 20160154-02-R

Date: 2019-12-03

Revision no. /rev. date: 0

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Client: RCN

Client contact person: Herman Fabrot Contract reference:

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Project manager: Jean-Sebastien L'Heureux

Prepared by: Ragnhild Christin Hansen, Morten Andreas Sjursen, Nouri El Hadj, Anatoly Sinitsyn, Arne Instanes and Karl Ivar Volden Kvisvik Reviewed by: Tom Lunne, Ørjan Nerland, Priscilla Paniagua

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1 Introduction 4

2 Laboratory testing procedures 5

2.1 Index and chemical tests 5

2.2 Maximum and minimum density of sand 11

2.3 Direct simple shear test ASTM 6528 12

2.4 Triaxial testing (CAUc and CAUe) 14

2.5 Consolidation tests 18

2.6 Permeability test 19

2.7 Gmax with bender elements 20

2.8 Specimen preparation 21

2.9 Laboratory testing procedures for frozen soils 21

3 References 25

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Appendix A Comparison of consolidation procedures

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Appendix A

Comparison of triaxial consolidation procedures

x ŽŵƉĂƌŝƐŽŶďĞƚǁĞĞŶhƚĞƐƚƐ͗

R KE^ϰϭͲϭϭͲͲϭ͕ŽŶƐŽůŝĚĂƚĞĚĂĐĐŽƌĚŝŶŐƚŽE'/ŵĞƚŚŽĚŽůŽŐLJ͕ŝ͘Ğ͘ŝƐŽƚƌŽƉŝĐƐƚƌĞƐƐ ŝŶĐƌĞĂƐĞƚŽĨŝŶĂůƌĂĚŝĂůĞĨĨĞĐƚŝǀĞƐƚƌĞƐƐĨŽůůŽǁĞĚďLJŝŶĐƌĞĂƐĞŝŶĚĞǀŝĂƚŽƌŝĐƐƚƌĞƐƐƵƉƚŽ ĨŝŶĂůĂdžŝĂůĞĨĨĞĐƚŝǀĞƐƚƌĞƐƐ

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R WĂŐĞϯͲϰ ƐŚĞĂƌŝŶŐƉŚĂƐĞĂůůƚĞƐƚƐ R WĂŐĞϱ ĐŽŶƐŽůŝĚĂƚŝŽŶƉŚĂƐĞĂůůƚĞƐƚƐ R ƉƉ͘ WĚĨƐŝŶŐůĞƚĞƐƚƐ

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ƒ ƐƚŚĞƐĂŵƉůĞĚĞƉƚŚŝŶĐƌĞĂƐĞƐ͕ƚŚĞŝŶŝƚŝĂůƐƉĞĐŝŵĞŶǁĂƚĞƌĐŽŶƚĞŶƚĚĞĐƌĞĂƐĞƐ

ƒ ƐƚŚĞŝŶŝƚŝĂůƐƉĞĐŝŵĞŶǁĂƚĞƌĐŽŶƚĞŶƚĚĞĐƌĞĂƐĞƐ͕ƚŚĞǀŽůƵŵĞƚƌŝĐƐƚƌĂŝŶĂƚĞŶĚ ŽĨĐŽŶƐŽůŝĚĂƚŝŽŶĚĞĐƌĞĂƐĞƐ

R &ƌŽŵĨŝŐƵƌĞϮ

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0 4 8 12 16 20 24 28 Axial Strain, e_a (%)

0 8 16 24

Shear Stress t = (sa - sr)/2 (kPa)

0 4 8 12 16 20 24 28

Axial Strain, e_a (%) 0

20 40 60 80

Pore Pressure, u (kPa)

Triaxial test:

Boring: Depth= m Consolidation stresses

CAUC

ONSB41 16.60

Dato/rev.: 2014-12-23/01

NGTS - Onsøy Test Site

GXX 2018-02-12 20160154-10

Drawn by/checked Date

Figure No.

Document No.

PCa / MAS

70 60 50 40 30 20 10 0 Shear Stress,

t = (s - s a

)/2 (kPa) r

01020304050607080 Effective Mean Stress, p' = (sa' + sr')/2 (kPa)

ea(%) Pos. Neg. ! ! 0.0 . / 0.2 + , 0.5 4 5 1.0 ( * 2.0 : ; 3.0 $ & 4.0 7 8 6.0 8.0 < > 10.0l n

Triaxial test:

Boring: Depth= m Consolidation stresses

CAUC

ONSB41 10.60

Dato/rev.: 2014-12-23/01

NGTS - Onsøy Test Site

GXX 2018-02-12 20160154-10

Drawn by/checked Date

Figure No.

Document No.

PCa / MAS