Consolidation Rate Chapter 9 Consolidation Model 1 4/2/2015 - - PDF document

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Consolidation Rate Chapter 9 Consolidation Model 1 4/2/2015 - - PDF document

4/2/2015 Consolidation Rate Chapter 9 Consolidation Model 1 4/2/2015 Consolidation Rate 1 1 Coefficient of


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Consolidation Rate

Chapter 9

Consolidation Model

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Consolidation Rate

  • 1

1

  • (Holtz & Kovacs, An Introduction to Geotechnical Engineering, 1981)

Coefficient of compressibility

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Coefficient of Compressibility

0.8 0.9 1 1.1 1.2 1.3 1.4 1.5 10 100 1000 Void ratio, e Effective pressure ' (kPa)

'0 ‘f

Coefficient of Compressibility

0.8 0.9 1 1.1 1.2 1.3 1.4 1.5 100 200 300 400 500 600 700 Void ratio, e Effective pressure ' (kPa)

'0 ‘f

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Coefficient of Compressibility

0.0002 0.0004 0.0006 0.0008 0.001 0.0012 0.0014 0.0016 100 200 300 400 500 600 av Effective pressure ' (kPa)

'0 ‘f

Consolidation Rate

  • 1
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(Holtz & Kovacs, An Introduction to Geotechnical Engineering, 1981)

Coefficient of volume change

∆ ∆′

Consolidation Rate

2Hdr

2 d z r v

c t H T

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Consolidation Rate

2 2 1

2 v z dr

c t T H

u0 = initial excess pore pressure uz

Degree of Consolidation

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Average Degree of Consolidation Average Degree of Consolidation

Time (years) Sp Settlement (feet)

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Average Degree of Consolidation