Description:

• Consolidation in a Hydraulic Cell (BS1377: Part 6: Clause 3: 1990)

Results given:

• Coefficient(s) of Consolidation and Compressibility

You provide:

• Remoulding conditions, if applicable
• Diretion of Flow (inwards, outwards, vertical etc)
• Loading condition (free or equal strain)
• Effective consolidation pressure(s)

Typical use(s):

• Determining consolidation properties in a particular mode/orientation of drainage, particularly where the in-situ material is in layers of different permeabilities

Material required:

• Enough material to fill apparatus with an internal diameter of 76mm, 100mm, 150mm or 250mm and a height of approximately 1/3 to ½ diameter

Note: The duration of this test is material dependent, and can be long particularly for low permeability large diameter samples

Description:

• Consolidation properties in oedometer – Incremental loading oedometer test on undisturbed soil specimens (includes mandatory reporting) (BS EN ISO 17892-5: 2017)
• Consolidation properties in oedometer (includes mandatory and optional reporting requirements) (BS EN ISO 17892-5: 2017)
• Addition of swelling pressure determination
• Extra over 5 days in excess of initial 5 days
• Remoulding specimen at as-received
• Water content

Results given:

• Swelling pressure (if performed)
• Voids ratio v log of pressure plot
• Coefficient of consolidation
• Coefficient of volume compressibility

You provide:

• Specify if swelling pressure is to be determined
• Specify pressure sequence to be applied

Typical use(s):

• Behaviour of ground to changes of loading

Material required:

• Ideally, an undisturbed length of sample at least half as long as the diameter, and at least 10mm greater in diameter than the required specimen (typical specimen 76mm dia.)
• If remoulded, 200g

Description:

• Isotropic Consolidation in a Triaxial Cell

Results given:

• Coefficient of Consolidation and Volume Compressibility

You provide:

• Remoulding conditions, if applicable
• Effective consolidation pressure

Typical use(s):

• Determining settlement characteristics

Material required:

• If remoulded, 2kg (for 100mm diameter specimen)
• If undisturbed, 100mm diameter core-cutter or liner sample, at least 100mm intact length