Lime Stabilization of bentonite sludge from tunnel boring

Castro‐Fresno, Daniel; Movilla-Quesada, D.; Vega-Zamanillo, Ángel; Calzada-Pérez, Miguel Ángel

doi:10.1016/j.clay.2010.11.028

Cited by 35 publications

(17 citation statements)

References 10 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The limit of plasticity of montmorillonite increases with the addition of cement up to 8% and then begins to decrease. It is concluded that adding the treatment to a control soil increases the consistency limit [16,17].…”

Section: Influence Of Bentonite-cement Treatment On the Atterberg Limmentioning

confidence: 98%

“…Moreover, the silicate accelerates the setting but leads to a clotted structure [15,22]. Furthermore, bentonite prevents the contribution of crystals of ettringite in an undesirable way to the argillaceous matrix, thus an improvement of the mechanical properties is developed slightly [16].…”

Section: Microanalysis Of Treated Soilmentioning

confidence: 99%

“…The addition of a high cement content and a lower percentage of bentonite to a control soil (Figures 10g and h) results in an agglomerated structure with intimately bonded grains, which decrease the pore size [16]. This is explained by the fact that flocculation is followed by pozzolanic reactions, which lead to the creation of calcium-silicate-hydrate (CSH) and calcium-aluminosilicate-hydrate (CASH), which in turn fill these pores and form solid bridges [23].…”

Section: Microanalysis Of Treated Soilmentioning

confidence: 99%

See 2 more Smart Citations

Treatment of a collapsible soil using a bentonite–cement mixture

Bellil

Abbèche

Bahloul

2018

Studia Geotechnica Et Mechanica

View full text Add to dashboard Cite

The study of collapsible soils that are generally encountered in arid and semi-arid regions remains a major issue for geotechnical engineers. This experimental study, carried out on soils reconstituted in the laboratory, aims firstly to present a method of reducing the collapse potential to an acceptable level by treating them with different levels of bentonite–cement mixture while maintaining the water content and degree of compactness, thus reducing eventual risks for the structures implanted on these soils. Furthermore, a microscopic study using scanning electron microscopy was carried out to explore the microstructure of the soil in order to have an idea of the phenomena before and after treatment. The results show that treatment with a bentonite–cement mixture improves the geotechnical and mechanical characteristics, modifies the chemical composition of the soil, reduces the collapse potential and the consistency limits. The microstructural study and the X-ray energy dispersive spectroscopy analysis clearly illustrate an association of elementary particles in the soil aggregates, whereby the arrangement of these aggregates leads to the formation of a dense and stable material.

show abstract

Section: Influence Of Bentonite-cement Treatment On the Atterberg Limmentioning

confidence: 98%

Section: Microanalysis Of Treated Soilmentioning

confidence: 99%

Section: Microanalysis Of Treated Soilmentioning

confidence: 99%

See 1 more Smart Citation

Treatment of a collapsible soil using a bentonite–cement mixture

Bellil

Abbèche

Bahloul

2018

Studia Geotechnica Et Mechanica

View full text Add to dashboard Cite

show abstract

“…Kako bi se poboljšala učinkovitost takvih tala, provodi se proces stabilizacije. Stabilizacija tla uključuje dodavanje veziva za poboljšanje mehaničkih i kemijskih svojstava tla [3]. Tijekom proteklih godina dodavali su se kemijski aditivi, ali s različitim razinama učinkovitosti.…”

Section: Uvodunclassified

Utjecaj fosfogipsa na čvrstoću ekspanzivnog tla stabiliziranog vapnom

2014

JCE

View full text Add to dashboard Cite

“…This remediation mode is often used. On the one hand, because of its facility and economic appearance and on the other hand due to its effectiveness who allow to obtain engineering materials having superior properties [2][3][4][5][6]. Several studies on the basic lime-clay-reaction mechanisms have been widely reported in literature [7][8][9][10] allowing a better understanding of the physicochemical evolution of the system and micro structural features induced after the addition of lime [11][12][13][14][15].…”

Section: Introductionmentioning

confidence: 99%

Effect of quick lime on physicochemical properties of clay soil

Bessaim

Missoum

et al. 2018

MATEC Web Conf.

View full text Add to dashboard Cite

Abstract. Clay soils are known for their water sensitivity, which causes irreparable damage to any structure built on this type of soil. In order to avoid such problem, it is necessary to use various improvement and stabilization methods such as treatment with lime. This process has been used successfully in the field for decades. The addition of lime generates various physicochemical reactions within the soil such as cation exchange and pozzolanic reactions which are largely responsible for the improvement of the soil in question. This paper presents a study concerning the variation of physicochemical properties of clayey soil with the addition of quicklime at different percentages. Experiments were performed on two clayey soils (CL type) in order to investigate the influence of quicklime on Atterberg limits and pH. These tests were carried out in an attempt to study and follow the development and progression of various reactions occurred within the soil with various lime percentages. The results show that the addition of quicklime causes a significant improvement in soil properties by reducing plasticity and thereby improves the soil workability. It can also be found that the addition of lime increase pH of soil, which allow activating pozzolanic reactions who tend to stabilize the soil in question by formation of cementitious compounds. Finally, the pH can be considered as a relevant parameter who allows a better understanding of the reactions that occur in the soil matrix.

show abstract

Lime Stabilization of bentonite sludge from tunnel boring

Cited by 35 publications

References 10 publications

Treatment of a collapsible soil using a bentonite–cement mixture

Treatment of a collapsible soil using a bentonite–cement mixture

Utjecaj fosfogipsa na čvrstoću ekspanzivnog tla stabiliziranog vapnom

Effect of quick lime on physicochemical properties of clay soil

Contact Info

Product

Resources

About