Soft clay behaviour analysis and assessment 1st Edition by Nagaraj, Miura ISBN 978-9058093295 9058093298
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Product details:
ISBN 10: 9058093298
ISBN 13: 978-9058093295
Author: T. S. Nagaraj, N. Miura
Table of contents:
1 SOILS AS ENGINEERING MATERIALS
1.1 Introduction
1.2 Soil formation
1.3 Soil composition and state
1.3.1 Consistency limits of soils
1.3.2 Soil state
1.4 Effective stress principle
1.5 Compressibility and consolidation
1.5.1 Stress history effects
1.5.2 Consolidation
1.6 Shear strength
1.6.1 Strength tests
1.6.2 Strength theories
1.7 Constitutive modelling of soils
1.7.1 Cam clay model
1.8 Permeability of clays
1.9 Concluding remarks
2 SOFT CLAY ENGINEERING
2.1 Introduction
2.2 Formation of clay sediments
2.2.1 Soil particles
2.2.2 Soil – water interactions
2.3 Inherent characteristics of soft clays
2.3.1 Compressibility
2.3.2 Shear strength
2.3.3 Permeability
2.4 Alternative approaches to ground improvement
2.4.1 Bypass poor ground
2.4.2 Replacement
2.4.3 Displacement
2.4.4 Load reduction
2.4.5 Re-design as compensated foundations
2.5 Dewatering and drainage techniques
2.5.1 Water table lowering
2.5.2 Electro-osmotic drainage
2.6 Precompression of soft clays
2.6.1 Vacuum preloading
2.6.2 Pre-loading using inflatable tubes and vacuum
2.6.3 Pre-compression by electro-osmosis
2.7 Dynamic consolidation
2.7.1 Principle
2.7.2 Analysis
2.8 Soil reinforcement
2.8.1 Granular piles and stone columns
2.8.2 Reinforced earth
2.8.3 Soil nailing – in-situ reinforced earth
2.8.4 Reinforced earth applications in soft ground
2.9 Induced cementation
2.9.1 Methods to incorporate the admixture
2.9.2 Bearing capacity
2.9.3 Settlement analysis
2.9.4 Applications
2.10 Concluding remarks
3 DEVELOPMENT OF THE BASIC FRAMEWORK FOR ANALYSIS
3.1 Introduction
3.2 Re-examination of classification of soft clay deposits
3.3 Fundamentals of soil behaviour
3.3.1 Nature of soil solid particles
3.3.2 Clay-water interactions
3.3.3 Physical and physico-chemical interactions
3.3.4 State parameter for soils
3.3.5 Reference state parameter
3.3.6 Critical appraisal of index parameters
3.3.7 Liquid limit determination-further simplified
3.4 Intrinsic state line
3.4.1 Effective stress in fine grained soils
3.4.2 Development of intrinsic state – effective stress relation
3.5 Intrinsic rebound-recompression lines
3.5.1 Intrinsic state – effective stress relation
3.6 Soft clay deposits – classification
3.7 In-situ test data – a possible generalization for analysis and assessment of soil behaviour
3.8 Concluding remarks
4 UNCEMENTED SATURATED SOFT CLAYS – STRESS AND TIME EFFECTS
4.1 Introduction
4.2 Sampling requirements and techniques
4.2.1 Sampling requirements
4.2.2 Sampling techniques
4.3 Compressibility
4.3.1 Normally consolidated
4.3.2 Overconsolidated
4.3.3 Secondary compression
4.3.4 Ca/Ce relationships
4.3.5 Ko due to stress history effects
4.4 Shear strength
4.4.1 Normally consolidated
4.4.2 Overconsolidated
4.4.3 Shear strength due to ageing
4.4.4 Normalized soil parameter (NSP) concept
4.4.5 SHANEP – practical implications
4.5 Constitutive relations
4.5.1 The modified Cam clay model
4.5.2 Revised Cam clay model
4.5.3 Elasto plastic model with variable moduli
4.6 Stress-state permeability relations
4.6.1 Normally consolidated
4.6.2 Overconsolidated
4.7 Concluding remarks
5 NATURALLY CEMENTED SOFT CLAYS
5.1 Introduction
5.2 Structured soft clays
5.3 Effective stress in cemented soils
5.4 Estimation of sample disturbance
5.4.1 State of-the-art
5.4.2 Quantitative approach
5.4.3 Suggested approach
5.5 Most probable compression path
5.5.1 Modifications to laboratory compression curve
5.5.2 Using field vane strength
5.6 Assessment of compressibility
5.7 Analysis of shear strength characteristics
5.7.1 Strength parameters
5.8 Constitutive modelling of cemented soft clays
5.8.1 Analysis of stress-strain response
5.8.2 Constitutive modelling
5.8.3 Description of the model for cementation component
5.9 Stress-state permeability relations
5.10 Concluding remarks
6 INDUCED CEMENTATION OF SOFT CLAYS
6.1 Introduction
6.2 Recent developments
6.3 Practical significance
6.4 Need for basic work
6.4.1 Specific questions
6.5 Compacted cement-admixed clays versus induced cemented soft clays
6.5.1 Admixed clays
6.5.2 Diffusion
6.6 Characteristics of induced cemented clays
6.6.1 Microstructural state
6.7 Strength development
6.8 Inter-relations between strength and rest period, cement content
6.9 Concluding remarks
EPILOGUE
REFERENCES
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Tags: Nagaraj, Miura, Soft clay, analysis and assessment