The pneumatic flow mixing method

The pneumatic flow mixing method was developed to stabilize dredged soil and surplus soil for promoting their beneficial use in 1999. The pneumatic flow mixing method is a new type of the ex-situ cement stabilization techniques, in which dredged soil and surplus soil is mixed with a relatively small amount of chemical binder without any mixing paddles and blades in a pipeline. When a relatively large amount of compressed air is injected into the pipeline, soil can be separated into small blocks. When binder is injected into the pipeline, the soil block and binder are thoroughly mixed by means of turbulent flow generated in the soil block during transporting. As this method has many benefits - rapid and large scale execution can be conducted with low cost - it has been applied to many land reclamation projects, backfilling behind earth retaining wall projects and shallow stabilization projects using dredged soils and surplus soils.The book presents the state of the art in the pneumatic flow mixing method, and covers recent technologies, research activities and know-how in machinery, design, construction technology and quality control and assurance. **The Pneumatic Flow Mixing Method** is a useful reference tool for engineers and researchers involved in admixture stabilization technology everywhere, regardless of local soil conditions and a variety in applications. The pneumatic flow mixing method was developed to stabilize dredged soil and surplus soil for promoting their beneficial use in 1999. The pneumatic flow mixing method is a new type of the ex-situ cement stabilization techniques, in which dredged soil and surplus soil is mixed with a relatively small amount of chemical binder without any mixing paddles and blades in a pipeline. When a relatively large amount of compressed air is injected into the pipeline, soil can be separated into small blocks. When binder is injected into the pipeline, the soil block and binder are thoroughly mixed by means of turbulent flow generated in the soil block during transporting. As this method has many benefits - rapid and large scale execution can be conducted with low cost - it has been applied to many land reclamation projects, backfilling behind earth retaining wall projects and shallow stabilization projects using dredged soils and surplus soils. The book presents the state of the art in the pneumatic flow mixing method, and covers recent technologies, research activities and know-how in machinery, design, construction technology and quality control and assurance. The Pneumatic Flow Mixing Method is a useful reference tool for engineers and researchers involved in admixture stabilization technology everywhere, regardless of local soil conditions and a variety in applications. Content: 1. Overview of Admixture Stabilization - Evolution of Pneumatic Flow Mixing and Scope of the Book1 Introduction2 Cement admixture stabilization techniques3 Development, mechanism and applications of Pneumatic Flow Mixing method 4 Scope of the textbook2. Factors Affecting Strength Increase1 Introduction2 mechanism of cement stabilization3 Influence of various factors on stabilization effect of cement stabilized soil4 Prediction of strength3. Engineering Properties of Stabilized Soils1 Introduction 2 Properties of stabilized soil mixture before hardening3 Properties of stabilized soil after hardening4 Properties of stabilized soil subjected to disturbance/compaction5 Engineering properties of cement stabilized soil manufactured in situ6 Summary 4. Applications1 Introduction2 Improvement purposes and applications3 Selected case histories in Japan 5. Equipment, Construction, and Quality Control and Assurance1 Introduction2 Equipment3 Construction procedure 4 Quality control6. Design1 Introduction2 Design strength 3 Geotechnical designAPPENDIX A Japanese Laboratory Mix Test Procedure1 Introduction2 Testing equipment3 Making and curing of specimens4 Report5 Use of Specimens Cover -- Half Title -- Title Page -- Copyright Page -- Contents -- Preface -- List of Technical Terms and Symbols -- 1 An overview of admixture stabilization - Evolution of pneumatic flow mixing and the scope of the book -- 1 Introduction -- 2 Cement admixture stabilization techniques -- 2.1 Basic mechanism of cement admixture stabilization -- 2.2 Classification of cement admixture stabilization techniques -- 2.3 In-situ mixing techniques -- 2.3.1 Power blender method -- 2.3.2 Deep mixing method -- 2.4 Ex-situ mixing techniques -- 2.4.1 Premixing method 1. An overview of admixture stabilization : evolution of pneumatic flow mixing and the scope of the book -- 2. Factors affecting strength increase -- 3. Engineering properties of stabilized soils -- 4. Applications of the pneumatic flow mixing method -- 5. Equipment, construction, and quality control and assurance -- 6. Geotechnical design of stabilized soil ground