Strength properties of soft clay treated with mixture of nano-SiO2 and recycled polyester fiber

Changizi, Foad; Haddad, Abdolhosein

doi:10.1016/j.jrmge.2015.03.013

Cited by 136 publications

(40 citation statements)

References 16 publications

(14 reference statements)

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…One method of using plastic for soil stabilisation is to use the plastic in the form of discrete fibres (Yetimoglu and Salbas 2003), because when plastic materials are merged with soils, they behave similar to fibre-reinforced soil. Several researches have been conducted to investigate the effectiveness of plastic waste materials in the form of discrete fibres on properties of soils (Ziegler et al 1998;Babu and Chouksey 2011;Mondal 2012;Ahmadinia et al 2012;Modarres and Hamedi 2014;Fauzi et al 2015;Changizi and Haddad 2015;Rawat and Kumar 2016;Peddaiah et al 2018;Salimi and Ghzavi 2019). These researchers found that using plastic waste materials for soil stabilisation will improve the properties of weak soils such as an increase in UCS, CBR, and Mr and a decrease in the soil plasticity.…”

Section: Introductionmentioning

confidence: 99%

Effects of Plastic Waste Materials on Geotechnical Properties of Clayey Soil

Hassan

Rasul²,

Samin

2021

Transp. Infrastruct. Geotech.

View full text Add to dashboard Cite

Recently, the use of plastic products, such as polyethylene (PE) bottles and polypropylene (PP), has been significantly increased, which may lead to many environmental issues. Therefore, it is important to find methods to manage these waste materials without causing any ecological hazards. One of these methods is to use plastic wastes as soil stabiliser materials. In this study, PE and PP have been used in the form of fibres. The effect of the stabilisation was evaluated through carrying out standard laboratory tests. These tests have been conducted on natural and stabilised soils with four fibre contents (1%, 2%, 3%, and 4%) of the soil weight. The tests included the standard compaction test, unconfined compressive strength (UCS) test, California Bearing Ratio (CBR) test, and resilient modulus (Mr) tests. In all these tests, the fibre content was added in two lengths, which were 1.0 cm and 2.0 cm. Laboratory test results revealed that the plastic pieces decrease maximum dry density (MDD) and optimum moisture content (OMC) of the stabilised soils, which are required for the construction of embankments of lightweight materials. In addition, there was a significant improvement in the UCS of soils by 76.4 and 96.6% for both lengths of PE fibres and 57.4% and 73.0% for both lengths of PP fibres, respectively. Results of the CBR tests demonstrated that the inclusion of plastic fibres in clayey soils improves the strength and deformation behaviour of the soil especially with 4% fibre content for both lengths 1.0 cm and 2.0 cm, respectively, to a figure of 185 to 150% for PE and PP, respectively. Furthermore, the results of the Mr tests demonstrated that the mechanical properties improved to an extent. For an increase in fibre content, the resilient modulus increased by about 120% at 4% fibre content for PE. However, for PP, improvement in resilient modulus declined at 3% fibre content. Therefore, for soil stabilisation with fibre material, optimum fibre content shall be sought.

show abstract

Section: Introductionmentioning

confidence: 99%

Effects of Plastic Waste Materials on Geotechnical Properties of Clayey Soil

Hassan

Rasul²,

Samin

2021

Transp. Infrastruct. Geotech.

View full text Add to dashboard Cite

show abstract

“…Since soil samples grouted with CS will improve compressive strength, CS-soil mixtures should also obtain a higher shear strength compared with pure soil samples. Changizi and Haddad (2015) added 0.5%, 0.7% and 1% CS to soil to discover the mechanical enhancing effect. They found that both the friction angle and cohesion were enhanced for grouted soils [58].…”

Section: Mechanical Properties Of Cs-soil Mixturesmentioning

confidence: 99%

“…Changizi and Haddad (2015) added 0.5%, 0.7% and 1% CS to soil to discover the mechanical enhancing effect. They found that both the friction angle and cohesion were enhanced for grouted soils [58]. Besides, the relationship between the shear stress ratio (the ratio of shear stress to effective vertical stress) and shear displacement was investigated for a pure sand sample, a 1-week-cured CS-sand sample, and a 4-week-cured CS-sand sample, as shown in Figure 9 [50].…”

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

View full text Add to dashboard Cite

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.

show abstract

“…Silica nanostabilizer hold promising prospective material for weak soil stabilization on account of cost-effectiveness, high durability characteristics, and reliable stabilization 22–24 . In this connection, few reports have investigated the influence of silica nanoparticles (NPs) on the geotechnical properties of different form of stabilized soils 21,24,25 . To the best of our knowledge, no study has found in the literature concerning the effect of plant-mediated nanosilica additive on subgrade soil for railway construction purpose.…”

Section: Introductionmentioning

confidence: 99%

Impact of Biocompatible Nanosilica on Green Stabilization of Subgrade Soil

Buazar

2019

Sci Rep

View full text Add to dashboard Cite

This study reports the synthesis and potential application of biocompatible silica nanoparticles for subgrade soil stabilization. Nanosilica preparation as a major component from wheat husk ash is systematically studied and confirmed by FTIR, ICP, XRD, and TEM analyses. The produced biogenic nanosilica showed an amorphous structure with an average size of 20 nm. Upon loading various green nanosilica contents, our results show an improvement in the key parameters including Atterberg’s limits, maximum dry density, optimum water content, and shear strength of treated soil. Under optimal loading condition, the nanosilica-mediated soil analyses reveal a significant increase in the plastic and liquid limits by factors of 1.60 and 1.24 whereas plasticity index is declined by a factor of 0.78 rather than untreated soil specimen. The treated soil demonstrates a superior increase in the angle of internal friction, cohesion, shear strength, and maximum dry unit weight by factors of 2.17, 3.07, 2.21 and 1.5, respectively. The California Bearing Ratio (CBR) strength of nanosilica-cured soil presents a substantial increase by a factor of 5.83 higher than the corresponding original subgrade soil. We obtained the maximum increase in strength parameters of modified soil at the optimum biogenic nanosilica content of 1.5%.

show abstract

Strength properties of soft clay treated with mixture of nano-SiO2 and recycled polyester fiber

Cited by 136 publications

References 16 publications

Effects of Plastic Waste Materials on Geotechnical Properties of Clayey Soil

Effects of Plastic Waste Materials on Geotechnical Properties of Clayey Soil

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

Impact of Biocompatible Nanosilica on Green Stabilization of Subgrade Soil

Contact Info

Product

Resources

About