scholarly journals Deep mixing method for the construction of earth and water retaining walls

2017 ◽  
Vol 2 ◽  
pp. 1-9 ◽  
Author(s):  
Nicolas Denies ◽  
Noël Huybrechts
Keyword(s):  
Large Scale ◽  
Ground Improvement ◽  
Retaining Walls ◽  
Bending Tests ◽  
Deep Mixing ◽  
Soil Cement ◽  
Mixing Method ◽  
Cement Mixture ◽  
Soil Mix ◽  
Steel Section

In the deep mixing method, the ground is mechanically mixed in place while a binder, often based on cement, is injected. After hardening of the soil-cement mixture, called soil mix material, soil mix elements are formed in the ground. Originally known as a ground improvement technique, the deep mixing is more and more applied for the construction of earth-water retaining structures within the framework of excavation works. After a short introduction to the execution aspects of the method, the authors discuss the hydro-mechanical properties of the soil mix material mainly based on the results of the BBRI Soil Mix project (2009-2013). A design approach dedicated to the soil mix retaining walls and developed in collaboration with the SBRCURnet is then presented. In this methodology, which is in line with the structural Eurocodes, design rules are adapted to the functions of the soil mix wall (earth-water retaining, bearing and cut-off functions) including the temporary or permanent character of the application. Based on the result of large-scale bending tests, the interaction between the soil mix material and the steel reinforcement is considered in the calculations allowing a reduction of the steel section between 10 and 40 %.

scholarly journals Visual evaluation of relative deep mixing method type of ground-improvement method

2021 ◽  
pp. 100233
Author(s):  
Koki Nakao ◽  
Shinya Inazumi ◽  
Toshiaki Takaue ◽  
Shigeaki Tanaka ◽  
Takayuki Shinoi
Keyword(s):  
Ground Improvement ◽  
Visual Evaluation ◽  
Deep Mixing ◽  
Improvement Method ◽  
Mixing Method

Behavior of Weak Soils Reinforced with End-Bearing Soil-Cement Columns Formed by the Deep Mixing Method

2014 ◽  
Vol 33 (6) ◽  
pp. 473-486 ◽  
Author(s):  
Ahmad Safuan A. Rashid ◽  
Jonathan A. Black ◽  
Hisham Mohamad ◽  
Norhazilan Mohd Noor
Keyword(s):  
Deep Mixing ◽  
Weak Soils ◽  
Soil Cement ◽  
Mixing Method

Properties of soil-cement stabilised with deep mixing method

2001 ◽  
Vol 5 (2) ◽  
pp. 69-74 ◽  
Author(s):  
Y. S. Fang ◽  
Y. T. Chung ◽  
F. J. Yu ◽  
T. J. Chen
Keyword(s):  
Deep Mixing ◽  
Soil Cement ◽  
Mixing Method ◽  
Properties Of Soil

scholarly journals Evaluation of Discharging Surplus Soils for Relative Stirred Deep Mixing Methods by MPS-CAE Analysis

2021 ◽  
Vol 14 (1) ◽  
pp. 58
Author(s):  
Koki Nakao ◽  
Shinya Inazumi ◽  
Toshiaki Takaue ◽  
Shigeaki Tanaka ◽  
Takayuki Shinoi
Keyword(s):  
Simulation Analysis ◽  
Ground Improvement ◽  
Normal Type ◽  
Deep Mixing ◽  
Improvement Measures ◽  
Improvement Method ◽  
Mixing Method ◽  
Cae Analysis ◽  
Great Damage

Most of the ground in Japan is soft, leading to great damage in the event of liquefaction. Various ground-improvement measures are being taken to suppress such damage. However, it is difficult to carry out ground-improvement work while checking the internal conditions of the ground during the construction. Therefore, a visible and measurable evaluation of the performance of the ground-improvement work was conducted in this study. The authors performed a simulation analysis of the relative stirred deep mixing method (RS-DMM), a kind of ground-improvement method, using a computer-aided engineering (CAE) analysis based on particle-based methods (PBMs). In the RS-DMM, the “displacement reduction type (DRT)” suppresses displacement during construction. Both the DRT and the normal type (NT) were simulated, and a visible and measurable evaluation was performed on the internal conditions during each construction, the quality of the improved body, and the displacement reduction performance. As an example of these results, it was possible to visually evaluate the discharge of surplus soil by the spiral rod attached to the stirring wing of the DRT. In addition, the authors succeeded in quantitatively showing that more surplus soil was discharged when the stirring wing of the DRT was used than when the stirring wing of the NT was used.

scholarly journals Quality Evaluation Method for Soil-Cement Column by Deep Mixing Method

2004 ◽  
Vol 53 (1) ◽  
pp. 9-12 ◽  
Author(s):  
Mamoru FUJII ◽  
Masashi KAWAMURA ◽  
Masahito TAMURA ◽  
Kazuhiro WATANABE ◽  
Eijirou MIZOGUCHI
Keyword(s):  
Quality Evaluation ◽  
Evaluation Method ◽  
Deep Mixing ◽  
Soil Cement ◽  
Mixing Method

Large-Scale Bending Tests on Soil Mix Elements

IFCEE 2015 ◽  
2015 ◽  
Author(s):  
Nicolas Denies ◽  
Noël Huybrechts ◽  
Flor De Cock ◽  
Bart Lameire ◽  
Jan Maertens ◽  
...  
Keyword(s):  
Large Scale ◽  
Bending Tests ◽  
Soil Mix

scholarly journals An integrated way to improve the properties of soil-cement pile foundations

2020 ◽  
Vol 157 ◽  
pp. 06006 ◽  
Author(s):  
Nikolay Seregin
Keyword(s):  
Pile Foundations ◽  
Scientific Article ◽  
Mathematical Methods ◽  
Physicomechanical Characteristics ◽  
Modeling Methods ◽  
Soil Cement ◽  
Mixing Method ◽  
Cement Mixture ◽  
Practical Recommendations ◽  
Properties Of Soil

The scientific article presents the results of the development of a method for improving the properties of soil-cement pile foundations by the drilling-mixing method using mechanical activation of soil-cement mixture in filler soils. Two methods for improving filler soils are considered. The choice of the mathematical methods for the research is justified. The feasibility of a complex combination of mathematical modeling methods and experimental design to achieve the goal set in this scientific article is substantiated. The physicomechanical characteristics of soil-cement are considered: a measure of brittleness, brittleness coefficient, compressive strength, splitting strength, strength variation coefficient. Based on the research, practical recommendations are given for improving soil-cement pile foundations.

scholarly journals A SYSTEM TO EVALUATE THE QUALITY OF SOIL-CEMENT COLUMN BY DEEP MIXING METHOD

2001 ◽  
Vol 66 (550) ◽  
pp. 79-86
Author(s):  
Masahito TAMURA ◽  
Yoshio INOUE ◽  
Ryuji KOBORI ◽  
Kazuhiro WATANABE ◽  
Mamoru FUJII ◽  
...  
Keyword(s):  
Deep Mixing ◽  
Soil Cement ◽  
Mixing Method

INVESTIGATION ON THE EFFECT OF COUNTERMEASURES FOR SUBSIDENCE AT THE APPROACHING AREAS OF ABUTMENTS

2019 ◽  
Vol 6 (1) ◽  
Author(s):  
Yukihide Kajita ◽  
Kazuki Onoda ◽  
Taiji Matsuda ◽  
Kunihiko Uno ◽  
Takeshi Kitahara
Keyword(s):  
Seismic Analysis ◽  
Ground Improvement ◽  
Bending Moment ◽  
Soil Improvement ◽  
Ground Subsidence ◽  
The Third ◽  
Deep Mixing ◽  
Emergency Vehicles ◽  
Mixing Method

The purpose of this study is to confirm the effect of soil improvement methods on preventing ground subsidence at the back of abutments. Earthquake seismic analysis is performed for three models. One is a model with no ground improvement. Next is a model with deep mixing method. The third is the model with lightweight banking method. As a result, from the perspective of the passage possibility of the emergency vehicles, both the deep mixing method and lightweight banking method are effective in preventing ground subsidence at the approaching area of abutments. However, in the case of the deep mixing method, it is found that the maximum bending moment of the pile under the liquefaction layer increases because a lump of improved rigid soil that falls down toward the piles.

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