Geotechnical properties of the soils modified with nanomaterials: A comprehensive review

Ghasabkolaei, Navid; Choobbasti, Asskar Janalizadeh; Roshan, Nader; Ghasemi, S. E.

doi:10.1016/j.acme.2017.01.010

Cited by 119 publications

(44 citation statements)

References 25 publications

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“…They further reported that the logarithm of hydraulic conductivity of the mixtures decreases almost linearly with the increase of CS concentration. The relationship between CS concentration and unconfined compressive strength, as well as hydraulic conductivity, has been recognized and summarized by Ghasabkolaei et al (2017) [56]. Noll (1992) also reported the reduced hydraulic conductivity of loose sand when mixed with 5 wt % CS.…”

Section: Mechanical Properties Of Cs-soil Mixturesmentioning

confidence: 99%

State-of-the-Art of Colloidal Silica-Based Soil Liquefaction Mitigation: An Emerging Technique for Ground Improvement

et al. 2019

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In the booming field of nanotechnology, colloidal silica (CS) has been introduced for ground improvement and liquefaction mitigation. It possesses a great ability to restrain pore pressure generation during seismic events by using an innovative stabilization technique, with the advantages of being a cost-effective, low disturbance, and environmentally friendly method. This paper firstly introduces molecular structures and some physical properties of CS, which are of great importance in the practical application of CS. Then, evidence that can justify the feasibility of CS transport in loose sand layers is demonstrated, summarizing the crucial factors that determine the rate of CS delivery. Thereafter, four chemical and physical methods that can examine the grouting quality are summed and appraised. Silica content and chloride ion concentration are two effective indicators recommended in this paper to judge CS converge. Finally, the evidence from the elemental tests, model tests, and field tests is reviewed in order to demonstrate CS’s ability to inhibit pore water pressure and lower liquefaction risk. Based on the conclusions drawn in previous literature, this paper refines the concept of CS concentration and curing time being the two dominant factors that determine the strengthening effect. The objective of this work is to review CS treatment methodologies and emphasize the critical factors that influence both CS delivery and the ground improving effect. Besides, it also aims to provide references for optimizing the approaches of CS transport and promoting its responsible use in mitigating liquefaction.

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Section: Mechanical Properties Of Cs-soil Mixturesmentioning

confidence: 99%

State-of-the-Art of Colloidal Silica-Based Soil Liquefaction Mitigation: An Emerging Technique for Ground Improvement

et al. 2019

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“…Recently, new steps have been taken by [28], [29] and [30] on the use and effect of nanomaterials in soil. [31] and [32] have conducted a study and have proved the nanomaterials have effectively improved liquefaction resistance.…”

Section: Microstructure Of Clay and Sand-fine Mixturesmentioning

confidence: 99%

A Liquefaction Resistance of Sand-Fine Mixtures: Short Review with Current Research on Factors Influencing Liquefaction Resistance

Othman

Marto²

2019

IJIE

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Sand is well understood as susceptible material to liquefy under seismic condition. In many cases of liquefaction, the loss of property and damages occurred due to the earthquake phenomenon are caused by sandy soils. Thus, many laboratory experiments and field tests on soil liquefaction engineering have been mandatorily focusing on the liquefaction resistance of sand-fine mixtures. The interaction between sand and fines particles appears to be well studied subject. However, there are some contradictory findings on some factors influencing liquefaction resistance in sand-fine mixtures. Therefore, this paper aim to present results and current findings from previous researchers which focused on sand-fine mixtures using various type of sand to interpret liquefaction resistance and its behaviour. In addition, microstructure test needs to be conducted for verification and analysis of the results on grading and particle sizes characteristics. It has been identified that recent findings on the particle size distribution and grading characteristics of sand in sand-fine mixtures are still contradicting. It has also been found that there are no study using different types of sand to reconstitute tropical sand-fine mixtures; and limited study focused on the coefficient uniformity, CU and coefficient of curvature, CC on liquefaction resistance relationship.

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“…The soft soil is reinforced to impart higher strength through a series of reactions between raw materials and curing agent [9][10][11][12][13][14][15][16]. In addition to the traditional cement curing agent, researchers are constantly looking for some novel materials such as nano materials to improve the bearing capacity of the soft soil layer [2,3,14,15,[17][18][19][20].…”

Section: Introductionmentioning

confidence: 99%

“…Nano cemented soil refers to the cement-soil mixture which is improved by adding nano materials as admixtures into the mixture of water, cement and soil [20][21][22]. At present, the nano materials for enhancing cemented soil mainly include nano titanium oxide, nano montmorillonite, nano magnesia, nano silicon, nano alumina, etc.…”

Section: Introductionmentioning

confidence: 99%

Mathematical Models for Stress–Strain Behavior of Nano Magnesia-Cement-Reinforced Seashore Soft Soil

Wang

Zhang

et al. 2020

Mathematics

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The stress–strain behavior of nano magnesia-cement-reinforced seashore soft soil (Nmcs) under different circumstances exhibits various characteristics, e.g., strain-hardening behavior, falling behavior, S-type falling behavior, and strong softening behavior. This study therefore proposes a REP (reinforced exponential and power function)-based mathematical model to simulate the various stress–strain behaviors of Nmcs under varying conditions. Firstly, the mathematical characteristics of different constitutive behaviors of Nmcs are explicitly discussed. Secondly, the conventional mathematical models and their applicability for modeling stress–strain behavior of cemented soil are examined. Based on the mathematical characteristics of different stress–strain curves and the features of different conventional models, a simple mathematical REP model for simulating the hardening behavior, modified falling behavior and strong softening behavior is proposed. Moreover, a CEL (coupled exponential and linear) model improved from the REP model is also put forth for simulating the S-type stress–strain behavior of Nmcs. Comparisons between conventional models and the proposed REP-based models are made which verify the feasibility of the proposed models. The proposed REP-based models may facilitate researchers in the assessment and estimation of stress–strain constitutive behaviors of Nmcs subjected to different scenarios.

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Geotechnical properties of the soils modified with nanomaterials: A comprehensive review

Cited by 119 publications

References 25 publications

State-of-the-Art of Colloidal Silica-Based Soil Liquefaction Mitigation: An Emerging Technique for Ground Improvement

State-of-the-Art of Colloidal Silica-Based Soil Liquefaction Mitigation: An Emerging Technique for Ground Improvement

A Liquefaction Resistance of Sand-Fine Mixtures: Short Review with Current Research on Factors Influencing Liquefaction Resistance

Mathematical Models for Stress–Strain Behavior of Nano Magnesia-Cement-Reinforced Seashore Soft Soil

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