Quality control and assurance of the deep mixing method. (2022)

• Record Type: Book
• Further Information: Note: Masaki Kitazume.
• Authors: Kitazume, Masaki
• Contents: Preface; List of Technical Terms and Symbols; 1 Overview of Deep Mixing Method and Scope of the Book; 1.1 DEFINITION OF SOFT GROUND; 1.2 OUTLINE OF ADMIXTURE STABILIZATION; 1.2.1 Basic mechanism; 1.2.2 Type of admixture techniques; 1.3 DEEP MIXING METHOD; 1.3.1 Outline of deep mixing method; 1.3.2 Classification of deep mixing method; 1.3.2.1 On land works; 1.3.2.2 Marine works; 1.3.3 Column/element installation patterns and applications; 1.4 Scope of book; REFERENCES 2 Quality Control and Assurance of Deep Mixing Method; 2.1 IMPORTANCE OF QUALITY CONTROL AND QUALITY ASSURANCE; 2.2 WORK FLOW OF DEEP MIXING PROJECT AND QC/QA; 2.3 CURRENT PRACTICE OF QC/QA; 2.3.1 Basic concept of laboratory, field and design standard strengths; 2.3.2 Process design; 2.3.2.1 Flow of mixing design and process design; 2.3.2.2 Mixing condition in laboratory and field; 2.3.2.3 Tips of laboratory mix test; 2.3.3 Selection of deep mixing equipment; 2.3.4 Field trial test; 2.3.5 Quality control during production; 2.3.5.1 Construction procedure; 2.3.5.2 Overlap columns/elements; 2.3.5.3 Operational parameters; 2.3.5.4 Example of construction procedure; 2.3.6 Quality control throughout construction period; 2.3.6.1 Material management; 2.3.6.2 Modification of construction control values; 2.3.6.3 Damage of mixing tool; 2.3.6.4 Lateral displacement and ground heaving; 2.3.7 Report; 2.3.8 Quality verification; 2.3.8.1 Verification methods; 2.3.8.2 Position of core boring; 2.3.8.3 Frequency of core boring; 2.3.8.4 Quality verification of boring core sample; 2.3.8.5 Quality verification by laboratory test; 2.3.8.6 Evaluation of unconfined compressive strength; 2.3.9 Rectification of non-compliant column/element; REFERENCES 3 Technical Issues on QC/QA of Stabilized Soil; 3.1 INTRODUCTION; 3.2 FIELD AND LABORATORY STRENGTHS; 3.2.1 Prediction of strength; 3.2.2 Strength ratio of field to laboratory strengths, quf/qul; 3.2.3 Strength deviation in field strength; 3.3 LABORATORY MIX TEST; 3.3.1 Role and basic approach of laboratory mix test; 3.3.2 Selection of soil for laboratory test and water to binder ratio of binder slurry, w/c; 3.3.3 Effect of specimen size; 3.3.3.1 Strength; 3.3.3.2 Young’s modulus; 3.3.4 Effect of molding technique; 3.3.5 Effect of overburden pressure during curing; 3.3.6 Effect of curing temperature; 3.3.6.1 Temperature in ground; 3.3.6.2 Effects of curing temperature and period; 3.3.6.3 Maturity; 3.4 SELECTION OF DEEP MIXING EQUIPMENT; 3.4.1 Factors influencing mixing degree; 3.4.1.1 Influence of number of mixing shafts; 3.4.1.2 Influence of type and shape of mixing blade; 3.4.1.3 Influence of diameter of mixing blade; 3.4.1.4 Influence of penetration speed of mixing tool; 3.4.2 Required blade rotation number; 3.4.2.1 Influence of blade rotation number in laboratory model tests; 3.4.2.2 Influence of blade rotation number in field test; 3.4.2.3 Influence of blade rotation number in field actual works; 3.4.3 Stabilization at shallow depth and influence of ground heaving; 3.4.3.1 Basic production procedure and effect of sand mat; 3.4.3.2 Influence of ground heaving; 3.4.4 Bottom treatment; 3.4.5 Overlap columns/elements; 3.5 VERIFICATION TECHNIQUES IN QUALITY ASSURANCE; 3.5.1 Core boring; 3.5.1.1 Procedure; 3.5.1.2 Frequency of boring core sampling and specimen; 3.5.1.3 Coring boring technique; 3.5.1.4 Size of boring core; 3.5.1.5 Macro scopic evaluation of strength of field stabilized soil; 3.5.2 Applicability of wet grab sampling; 3.5.2.1 Type of wet grab sampling; 3.5.2.2 Comparison of sampling type; 3.5.2.3 Comparison of wet grab sample strength and boring core sample strength; 3.5.2.4 Applicability of wet grab sampling for QA; REFERENCES 4 Problems and Countermeasures Associated with Problematic Soils; 4.1 PROBLEMATIC SOIL FOR STABILIZATION; 4.2 COUNTERMEASURES FOR PROBLEMATIC SOILS; 4.2.1 Water injection; 4.2.2 Use of new type special cement; 4.2.3 Use of dispersant; 4.2.4 Injecting atomized cement slurry; 4.2.5 Summary; REFERENCES 5 Water to Binder Ratio Concept in QC; 5.1 INTRODUCTION; 5.2 DEFINITION OF W/C RATIO; 5.2.1 Definition of W/C; 5.2.2 Relationship between W/C ratio and stabilized soil strength; 5.3 PREDICTION OF FIELD STRENGTH BY PRODUCTION LOG DATA; 5.3.1 Production log data; 5.3.2 Analysis of production log data; 5.3.3 Countermeasure for water injection; 5.4 SUMMARY; REFERENCES Subject Index
• Edition: 1st
• Publisher Details: Boca Raton : CRC Press
• Publication Date: 2022
• Extent: 1 online resource, illustrations (colour)
• Subjects: 624.151363; Soil stabilization; Reinforced soils
• Languages: English
• ISBNs: 9781000537994; 9781000537970; 9781003223054
• Related ISBNs: 9781032121048
• Notes: Note: Description based on CIP data; resource not viewed.
• Access Rights: Legal Deposit; Only available on premises controlled by the deposit library and to one user at any one time; The Legal Deposit Libraries (Non-Print Works) Regulations (UK).
• Access Usage: Restricted: Printing from this resource is governed by The Legal Deposit Libraries (Non-Print Works) Regulations (UK) and UK copyright law currently in force.