Treatment of a clay soil deposited in saline water by cement

Estabragh, A. R.; Kouchakzadeh, M

doi:10.1080/19648189.2019.1584769

Cited by 6 publications

(5 citation statements)

References 28 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Substitute materials for ecological restoration esters are classified as physical, chemical or biological according to the method used [ 7 ]. Physical methods involve mechanically combining the substitute and ester materials to form a uniform mixture; lime, fly ash, cement, and slag silicate are the most common physical substitutes [ 8 , 9 ]. Researchers have mainly focused on enhancing the physical and mechanical properties of soil using homogeneous mixtures of ester materials and physical substitutes.…”

Section: Introductionmentioning

confidence: 99%

The performance of partially substituted composite ester materials with weathered red-bed soil in ecological restoration

Liu,

Wu,

Liao

et al. 2024

PLoS ONE

View full text Add to dashboard Cite

Ester materials have become a significant topic in ecological restoration because of their degradability and lack of pollution. However, these artificial materials have issues such as high resource consumption and high cost. Therefore, finding a scientific substitute for ester materials is crucial to reduce costs. This study proposes the use of weathered red-bed soil to partially replace ester materials. Orthogonal coupled compounding and ecological effect tests were performed to analyze the soil improvement mechanism based on the mineral composition, soil structure, and electrical conductivity properties of the weathered red-bed soil. The experimental findings indicated that the soil modified using ester materials exhibited improved strength, water retention, and aeration owing to changes in the soil structure. Plant germination and height increased by 55% and 37 mm, respectively, when using a ratio of 15 g/m2 absorbent ester material, 2.5 g/m2 adhesive ester material, and 5% weathered red-bed soil. Through this approach, the amount of ester material to be used could be further reduced by 75%. The weathered red-bed soil offers improved ecological effects by altering the physical, mechanical, and hydraulic properties of the soil structure. This study presents a theoretical foundation for ecological conservation using weathered red-bed soil as a substitute for certain ester materials.

show abstract

Section: Introductionmentioning

confidence: 99%

The performance of partially substituted composite ester materials with weathered red-bed soil in ecological restoration

Liu,

Wu,

Liao

et al. 2024

PLoS ONE

View full text Add to dashboard Cite

show abstract

“…22 Initially, cement is firstly considered to treat the clay slurry. 23 However, significant environmental challenges compel researchers to seek more viable and efficient methods for soil problems. 24,25 Organic matter has been introduced to research the sedimentation behavior of colloid particles.…”

Section: Introductionmentioning

confidence: 99%

Influence of 2‐hydroxypropyltrimethyl ammonium chloride chitosan on sedimentation and volume change behavior of cohesive soil sediments

Qiu

Lü

et al. 2022

J of Applied Polymer Sci

View full text Add to dashboard Cite

The 2‐hydroxypropyltrimethyl ammonium chloride chitosan (HACC), introducing the functional quaternary ammonium group to the structure of Chitosan, has greatly broadened the application prospect. The influence on natural cohesive soil has rarely been considered. The sedimentation tests for the natural soil in HACC solutions and the HACC‐treated soils in distilled water are considered to analyze the change of sedimentation behaviors in this paper. Moreover, the potential change on the surface of soil particles, the change in particle size distribution, X‐ray diffraction of Ca‐montmorillonite/HACC, and scanning electron microscopy images are investigated to explain the reasons for the results. Results indicate that the surface potential of soil particles achieved reversal, and the particle size had significant agglomeration. The adsorption of HACC results in the rapid sedimentation of the treated soils in water. HACC has a significant influence on setting time and final volume. HACC cannot inhibit the interlayer swelling of Ca‐montmorillonite. The dehydration process can promote the aggregation effect of the treated soils. The specific effects provided an essential train of thought to solve soil problems.

show abstract

“…properties [2]. In order to reclaim mechanical and chemical properties of salty soils a growing body of studies has been conducted using different techniques including electrochemical improvement and chemical improvement by adding cement, lime, fly ash and micro silica or adopting mechanical stabilization by insertion of geotextile material [3][4][5][6][7][8][9][10]. Effect of sodium chloride on the mechanical properties of cement-stabilized Lianyungang marine clay was investigated by Abduljauwad et al [3].…”

Section: Introductionmentioning

confidence: 99%

Laboratory Investigation on the Effect of Microsilica Additive on the Mechanical Behavior of Deep Soil Mixing Columns in Saline Dry Sand

Esmaeili

Astaraki

Yaghouti

et al. 2021

Period. Polytech. Civil Eng.

View full text Add to dashboard Cite

Since loose and salty subgrades consider as problematic barriers while constructing new transportation infrastructures such as railway tracks and roads are required, the current study aims to find a solution to stabilize these kinds of subgrades using the deep soil mixing (DSM) technique and micro silica additive. In the present study a series of experimental DSM columns were executed in a salty sand-filled chamber utilizing a laboratory scale DSM apparatuses. In the first step, by adding three salt percentages of 5, 10 and 20 into the original sand, four different sandy subgrades with a relative density of 70% were prepared. Considering three percentages of 10, 15 and 20 for micro silica additive, the water-to-cement ratio of 1, salt percentages of 0, 5, 10 and 20 totally 150 sand-cement columns were constructed in the lab environment. In continuation, unconfined compression strength (UCS) and elasticity modulus of all capped DSM columns have been determined and interpreted using scanning electron microscope (SEM) images at three ages of 7,14 and 28 days. The results indicated that increasing the salinity of subgrade soil from 0 to 20% resulted in a falling UCS and Young module by 28 and 21% for 28-days specimens. Furthermore, as a solution, adding micro silica in cement-water grout up to 15% resulted in enhancing mechanical characteristics of the DSM columns. So that adding 15% microsilica caused a 21 and 42% increase in UCS and elasticity modulus of 28-days samples respectively, executed in subgrade with 20% salt.

show abstract

Treatment of a clay soil deposited in saline water by cement

Cited by 6 publications

References 28 publications

The performance of partially substituted composite ester materials with weathered red-bed soil in ecological restoration

The performance of partially substituted composite ester materials with weathered red-bed soil in ecological restoration

Influence of 2‐hydroxypropyltrimethyl ammonium chloride chitosan on sedimentation and volume change behavior of cohesive soil sediments

Laboratory Investigation on the Effect of Microsilica Additive on the Mechanical Behavior of Deep Soil Mixing Columns in Saline Dry Sand

Contact Info

Product

Resources

About