The pneumatic flow mixing method by Masaki Kitazume

By Masaki Kitazume

The pneumatic circulation blending approach was once built to stabilize dredged soil and surplus soil for selling their helpful use in 1999. The pneumatic move blending approach is a brand new form of the ex-situ cement stabilization strategies, during which dredged soil and surplus soil is blended with a comparatively small quantity of chemical binder with none blending paddles and blades in a pipeline. while a comparatively great amount of compressed air is injected into the pipeline, soil may be separated into small blocks. whilst binder is injected into the pipeline, the soil block and binder are completely combined via turbulent movement generated within the soil block in the course of transporting. As this technique has many advantages - swift and big scale execution might be performed with low-budget - it's been utilized to many land reclamation tasks, backfilling at the back of earth maintaining wall initiatives and shallow stabilization tasks utilizing dredged soils and surplus soils.
The e-book provides the cutting-edge within the pneumatic circulate blending technique, and covers contemporary applied sciences, examine actions and information in equipment, layout, development know-how and qc and assurance.

The Pneumatic circulation blending Method is an invaluable reference device for engineers and researchers interested by admixture stabilization know-how all over the place, despite neighborhood soil stipulations and a spread in applications.

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In Japanese). Mizukami, J. & Matsunaga, Y. (2015) Construction of D-Runway at Tokyo International Airport. Proc. of the 15th Asian Regional Conference on Soil Mechanics and Geotechnical Engineering. CD-ROM. Power Blender Method Association (2006) Technical data on slurry type Power Blender Method. Power Blender Association. (in Japanese). Tsuchida, T. & Egashira, K. (2004) The Lightweight Treated Soil method: New Geomaterials for Soft Ground Engineering in Coastal Areas. Balkema Publishers. 120p.

21 shows the effects of the mixing time, tmixing , of cement slurry, and the rest time, trest , on the strength of stabilized soil (Kitazume & Nishimura, 2009). The rest time is defined as the time period between the end of mixing and the start of molding. 0%) was stabilized with ordinary Portland cement with a W/C ratio of 100%, in which the cement content, aw, was changed to 5, 10 and 15%. The case tslurry = 0 corresponds to the situation where the cement and water are simultaneously added to the soil, or the powder form of cement is added.

No. 579, 41p. (in Japanese). Chapter 2 Factors affecting strength increase 1 INTRODUCTION The strength increase of cement-stabilized soils is influenced by a number of factors, because the basic strength increase mechanism is closely related to the chemical reaction between soil and binder. The factors can be roughly divided into four categories: I. Characteristics of binder, II. Characteristics and conditions of soil, III. Mixing conditions, and IV. 1 (after Terashi, 1997). The characteristics of the binder mentioned in Category I strongly affect the strength of the stabilized soil.

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