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.

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 Study of Mechanical Properties of Soil-Cement Mixture for a Cutoff Wall

1997 ◽  
Vol 37 (4) ◽  
pp. 93-103 ◽  
Author(s):  
Yuzhen Yu ◽  
Jialiu Pu ◽  
Keizo Ugai
Keyword(s):  
Mechanical Properties ◽  
Cutoff Wall ◽  
Soil Cement ◽  
Cement Mixture ◽  
Properties Of Soil

Effect of Gradation and Cement on the Properties of Soil-Cement Mixtures

2012 ◽  
Vol 535-537 ◽  
pp. 1719-1722
Author(s):  
Sung Chi Hsu ◽  
Huan Yang Chiang ◽  
Ji Yuan Lin
Keyword(s):  
Cement Content ◽  
Cementitious Materials ◽  
Experimental Results ◽  
Dry Density ◽  
Dam Construction ◽  
Fines Content ◽  
Soil Cement ◽  
Average Grain Size ◽  
Cement Mixture ◽  
Properties Of Soil

Eight non-plastic soils with different gradation are used for this research to study the appropriate choice of soil-cement mixture for a earth and rock-fill dam construction project. The properties of soil-cement materials are influenced by several factors, including type and proportion of soil, cementitious materials, water content, compaction, uniformity of mixing, curing conditions, and age of the compacted mixture. Based on the experimental results, the maximum dry density will increase with an increase in cement content for soils with low fines content. However, no significant variation was noticed for soils with higher fines content. For given cement content, the maximum density of soil-cement mixture also has a positive correlation with the average grain size, D50, and uniformity coefficient of gradation, Cu. Based on USBR criteria and experimental results, a minimum of 11% of cement content are suitable for soil-cement application on the dam construction. Coarser grain soils are more applicable than finer grain soils to soil-cement construction.

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 Engineering properties of soil-cement mixture improved with recycled fine additives for cutoff wall construction

2015 ◽  
Vol 1 (5) ◽  
pp. 23-26
Author(s):  
Li Yuelei ◽  
Miura Toshihiko ◽  
Shinmura Akira ◽  
Miyaoka Shuji ◽  
Inui Toru ◽  
...  
Keyword(s):  
Engineering Properties ◽  
Cutoff Wall ◽  
Soil Cement ◽  
Cement Mixture ◽  
Wall Construction ◽  
Properties Of Soil

Experimental study on strength of cement stabilized clay

2005 ◽  
Vol 3 (2) ◽  
pp. 116-126 ◽  
Author(s):  
Woo‐Sik Kim ◽  
Nguyen Minh Tam ◽  
Du‐Hwoe Jung
Keyword(s):  
Compressive Strength ◽  
Soil Type ◽  
Unconfined Compressive Strength ◽  
Weight Ratio ◽  
Dry Weight ◽  
Strength Characteristics ◽  
Curing Time ◽  
Compression Tests ◽  
Soil Cement ◽  
Mixing Method

This paper describes the effect of factors on the strength characteristics of cement treated clay from laboratory tests performed on cement mixed clay specimens. It is considered that several factors such as soil type, sample preparing method, quantity of binder, curing time, etc. can have an effect on strength characteristics of cement stabilized clay. A series of unconfined compression tests have been performed on samples prepared with different conditions. The results indicated that soil type, mixing method, curing time, dry weight ratio of cement to clay (Aw), and water‐clay to cement (wc/c) ratio were main factors which can have an influence on unconfined compressive strength, modulus of elasticity, and failure strain of cement stabilized clay. Unconfined compressive strength of soil‐cement samples prepared from dry mixing method was higher than those prepared from wet mixing method.

Mechanical and Physical Properties of Soil-Cement Blocks Reinforced with Mineral Wool and Sisal Fiber

2017 ◽  
Vol 29 (3) ◽  
pp. 04016225 ◽  
Author(s):  
Diego Alejandro Gutiérrez-Orrego ◽  
Edwin Fabián Garcia-Aristizabal ◽  
Maryory Astrid Gomez-Botero
Keyword(s):  
Physical Properties ◽  
Mineral Wool ◽  
Sisal Fiber ◽  
Soil Cement ◽  
Mechanical And Physical Properties ◽  
Properties Of Soil

scholarly journals Formalization of Methods in Criminalistics

2019 ◽  
Vol 75 (4) ◽  
pp. 86-90
Author(s):  
L. P. Grynko
Keyword(s):  
Forensic Science ◽  
Theory And Practice ◽  
Independent Research ◽  
Theoretical Level ◽  
Mathematical Methods ◽  
Material Models ◽  
Theoretical Methods ◽  
Judicial Practice ◽  
Sign System ◽  
Practical Recommendations

Scientific works on formalization of methods in criminalistics have been analyzed in the article. Despite the importance and relevance of these issues, it has been established that there is a number of unresolved issues in the theory of forensic science, as well as in investigative and judicial practice regarding the possibilities of formalizing methods and their implementation, which require separate independent research and in-depth reflection. Accordingly, the purpose of this article is to clarify the methods used to detect and investigate crimes and the possibilities of their formalization in criminalistics. Formalization methods in criminalistics have been considered. It has been found out that the most successful is their division into formalization of theoretical methods and formalization of practical methods. Methods of theoretical level have been researched. It has been emphasized that the use of mathematical methods contributes to the development of the most accurate practical recommendations, which allow to approach many issues of the theory and practice of forensic science from new positions. The author has considered the modeling method and has argued that it creates the preconditions for the use of formalization, since acting as prototypes, plans, hypothetical constructions of all kinds, this process is presented to investigators as a complex of interrelated transformations in the form of description. The development and use of forensic material models in the management of an investigative situation allows investigators to use, by analogy, forensic algorithms and investigative programs. Thus, the formalization is carried out in the form of the transition of content into a sign system. It is designed to address the tasks faced by investigators and directly related to the investigative situation existing at the time of the investigation. It has been found out that the formalization of forensic knowledge methods allows the use of such knowledge in the process of solving problems and making decisions by means of signs and symbols, which may increase the capacity of investigators to solve problems at all stages of crime investigation in different conditions of uncertainty.

scholarly journals The appliance of prefabricated soil-cement slabs processed with a hydrophobizing material for the road construction

2018 ◽  
Vol 196 ◽  
pp. 04026
Author(s):  
Sergey Sannikov ◽  
Sergey Kuyukov ◽  
Alexey Zamyatin ◽  
Alexandr Zhigailov
Keyword(s):  
Crack Formation ◽  
Experimental Studies ◽  
Road Construction ◽  
Full Scale ◽  
Complex Method ◽  
The Road ◽  
Soil Cement ◽  
Cement Mixture ◽  
Scale Experiment

The paper presents a complex method for increasing water resistance and reducing crack formation by using a prefabricated foundation of soil-cement slabs with surface processing with a hydrophobizing material on basis of organosilicon compounds. Theoretical, laboratory and full-scale experimental studies were made. Theoretical studies are based on the substantiation of the geometric parameters of the slab in order to exclude the probability of its destruction under its own weight during building and installation works. The result of the first stage of laboratory studies is the determination of the optimum composition of soil-cement mixture in order to achieve a grade of strength M20. At the second stage, the effectiveness of the influence of hydrophobizing materials "Tiprom U" and "Penetron-Admix" on water absorption and compressive strength of soil-cement was determined. The final stage of the research was a full-scale experiment. In the factory environment, soil-cement slabs were manufactured in metal forms. Based on the results of the research, conclusions about the effectiveness of this complex method were made. The use of soil-cement slabs allows reducing crack formation, as well as to work all year round due to manufacturing and surface treatment of slabs in the factory conditions.

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