Effect Of Coir Fibres On The Compaction And Unconfined Compressive Strength Of Bentonite-Lime-Gypsum Mixture

Tilak, B. Vidya; Dutta, Rakesh Kumar; Mohanty, Bikash

doi:10.1515/sjce-2015-0006

Cited by 10 publications

(3 citation statements)

References 15 publications

(19 reference statements)

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“…The gypsum originating from PG fills up the void spaces left out after the rapid reaction of bentonite with lime, resulting in base exchange aggregation and flocculation [43]. The presence of gypsum in lime-stabilized clay provides further Ca 2+ cations in addition to those provided by lime and [SO 4 ] 2− anions.…”

Section: 665mentioning

confidence: 99%

Phosphogypsum waste as additives to lime stabilization of bentonite

Oumnih

Bekkouch

Gharibi

et al. 2019

Sustain Environ Res

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Waste recycling with increasing the lifecycle of resource is a novel approach for enhancing circular economy. Within this context, this study aims to give a second life cycle to phosphogypsum (PG) waste, which is a byproduct from phosphoric acid manufacture, as useful resources. This study evaluates the sustainability of this harmful waste, which is accumulated in large stockpiles and becomes hazardous during storage, and to stabilize bentonite-based concrete intended for road construction. The effect of raw bentonite (Ca-Na montmorillonite), PG, and lime on the properties of cementitious materials has been investigated through various tests. The properties examined include chemistry (X-ray Fluorescence Spectrometry), mineralogy (X-ray Powder Diffraction and Fourier-Transform Infrared Spectroscopy), calorimetry (Differential Thermal Analysis/Thermogravimetry) and microstructure (Scanning Electron Microscopy) of the mortar based on different mixtures of bentonite, PG and lime. The result show that lime and PG addition involves in the formation of new nanocrystalline phases and the disappearance of certain minerals as portlandite. Calcium silicate hydrate gel appeared in the mixture with 8% of lime, whereas strätlingite was neoformed in the mixture with 8% of lime and 8% of PG. These nanocrystalline phases are responsible for enhancing mechanical strength through the pozzoloanic reaction.

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Section: 665mentioning

confidence: 99%

Phosphogypsum waste as additives to lime stabilization of bentonite

Oumnih

Bekkouch

Gharibi

et al. 2019

Sustain Environ Res

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show abstract

“…Natural fibers like coir fibers also proved their efficacy in the improvement of strength properties. Elastic behaviour was also found to be better than the reference mix for 28-day cured specimens (Tilak et al, 2015). Among 3mm, 6mm and 12mm sized PPF in a range of 0.25%; 12-mm-sized fibers produced satisfactorily results after 10 FT cycles (Zaimoglu et al, 2016).…”

Section: Introductionmentioning

confidence: 85%

Study of the Mechanical Behaviour of a Clayey Soil Under Normal and Frozen Conditions

Kumar

Soni

2019

Slovak Journal of Civil Engineering

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Lime and cement are quite compatible for stabilizing clayey soils; changes in a thermal regime may inversely affect the advantages of stabilized soil. The present study interprets changes in the mechanical behaviour of frozen and unfrozen Himalayan soil samples through an unconfined compressive strength test. The soil was treated with ground eggshell powder (3%-9%) and alkali activator (Sodium chloride) (2%-6%); it was reinforced with arbitrarily distributed polypropylene fibers (0.05%-0.15%). Standard 7, 14 and 21-day-old soil specimens were tested in unfrozen conditions, while fresh 21-day-old soil specimens were tested after 3, 5 and 10 freeze-thaw cycles. The design of the experiments was based on the Taguchi technique and arranged in an orthogonal array. The results of the research clearly show that poultry waste (eggshell powder) and alkaline soil stabilizer improved the strength behaviour of the subject soil. On the other hand, the polypropylene fibers played an important role in changing the brittle behaviour of the stabilized soil to ductile behaviour. The sudden collapse of a structure may be avoided by using polypropylene fibers. Al-Swaidani, A. -Hammoud, I. -Meziab, A. (2016) Effect of adding natural pozzolana on geotechnical properties of lime-stabilized clayey soil.

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“…Intrusion of natural fibres like coir fibres also proved their efficacy in improves the strength properties. The stressstrain behaviour was found better than reference mix for 28 days cured specimens [11]. Controlled moisture content i.e., 30% based model was developed by Qazi et al [12] and the model was inter-relate with soil's physical, chemical and strength parameters.…”

Section: Introductionmentioning

confidence: 99%

Characterization of Eggshell and Natural Chloride Stabilized Soil Using Geophysical Techniques

Kumar

Soni

2021

IJIE

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Although many techniques are available for the evaluation of soil parameters, but a quick and efficient method is always welcome. To avoid the hassle calculation and tedious procedures of testing; practitioners seek a fast method for site implementation of laboratory results. In the recent era of development and technology, it has been necessary to adopt the advanced techniques to evaluate the geotechnical parameters. In the present study, correlations between geophysical and compaction tests results have been derived. Eggshell powder (ESP), a waste material along with sodium chloride (NaCl) and polypropylene fiber (PPF) was used to stabilize the soil. Design of experiments was done by Taguchi technique using Minitab 17 software. A series of non-destructive geophysical tests i.e., Ultrasonic pulse velocity (UPV) and Electrical resistivity (Re) tests was carried out on 21 days aged soil specimens. Not only software based analytical results showed ESP as the dominating factor for attaining improvement in packing of soil particles and make soil resistive but also the results confirmed the same. UPV of the stabilized soil was found increased up to 69%-122% with respect to an increase in dry density of about 1.16%-1.74%. The utility of the present study can be found in places where dense soil and electric resistive properties meets such as transmission lines and railway electric poles etc. and for the purpose seismic and resistivity mapping methods can be used

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Effect Of Coir Fibres On The Compaction And Unconfined Compressive Strength Of Bentonite-Lime-Gypsum Mixture

Abstract: This paper presents the effect of coir fibres on the compaction and unconfined compressive strength of a bentonite-lime-gyp-

Cited by 10 publications

References 15 publications

Phosphogypsum waste as additives to lime stabilization of bentonite

Phosphogypsum waste as additives to lime stabilization of bentonite

Study of the Mechanical Behaviour of a Clayey Soil Under Normal and Frozen Conditions

Characterization of Eggshell and Natural Chloride Stabilized Soil Using Geophysical Techniques

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