Use of Natural Pozzolana and Lime for Stabilization of Cohesive Soils

Harichane, Khelifa; Ghrici, Mohamed; Kenaï, Saïd; Grine, Khaled

doi:10.1007/s10706-011-9415-z

Cited by 112 publications

(45 citation statements)

References 27 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…However, when the curing factor was considered in such mixtures, the highest UCS values were obtained for the curing times of 7 and 28 days, at the intermediate (UCS = 578.28 kPa) and modified (UCS = 786.59 kPa) compaction efforts. Harichane et al (2011) reported that the reaction between soil and lime results in the formation of cementitious compounds that bind soil particles together and, that generally the UCS value increases with increasing curing time. According to Aldaood et al (2014), addition of lime to the soil generally improves its geotechnical properties and provokes an immediate exothermic reaction between the CaO present in lime and soil water, forming calcium hydroxide.…”

Section: /8mentioning

confidence: 99%

Soil Stabilization with Lime for the Construction of Forest Roads

et al. 2018

View full text Add to dashboard Cite

The mechanical performance of soil stabilization using lime to improve forest roads was assessed. This study was conducted with lateritic soil (LVAd30) using lime content of 2% in the municipality of Niquelândia, Goiás state, Brazil. Geotechnical tests of soil characterization, compaction, and mechanical strength were performed applying different compaction efforts and curing periods. The results showed that lime content significantly changed the mechanical performance of natural soil, increasing its mechanical strength and load-carrying capacity. Compaction effort and curing time provided different responses in the unconfined compressive strength (UCS) and California Bearing Ratio (CBR) tests. The best UCS value (786.59 kPa) for the soil-lime mixture was achieved with modified compaction effort and curing time of 28 days. In the CBR test, soil-lime mixtures compacted at intermediate and modified efforts and cured for 28 days were considered for application as subbase material of flexible road pavements, being a promising alternative for use in layers of forest roads.

show abstract

Section: /8mentioning

confidence: 99%

Soil Stabilization with Lime for the Construction of Forest Roads

et al. 2018

View full text Add to dashboard Cite

show abstract

“…The NP is found in abundance in areas of Beni-Saf located in the west of Algeria [20]. The NP was used in combination with L to improve the engineering properties of both GS and RS such as the shear strength, the plasticity and the UCS [10,11,21,22]. However, there is no investigation of the influence of CaSO 4 .2H 2 O on the stabilization of these soils.…”

Section: Department Of Matter Engineeringmentioning

confidence: 99%

“…This change caused by L reduces the plasticity index and the maximum dry density of the stabilized soil but increases their optimum moisture content [10]. At the later stage, the increase in the concentration of hydroxyl (OH -) from L raises the pH of the soil, and causes the dissolution of alumina and silica which interact with calcium ions to form cementing products such as calcium silicate hydrates (CSH) and calcium aluminate hydrates (CAH).…”

Section: Introductionmentioning

confidence: 99%

Effect of Calcium Sulphate on the Geotechnical Properties of Stabilized Clayey Soils

Gadouri

Harichane

Ghrici

2016

Period. Polytech. Civil Eng.

Self Cite

View full text Add to dashboard Cite

An experimental investigation was undertaken to study the effect of calcium sulphate (CaSO 4 .2H 2 O) on the behaviour of the grey clay (GS) and red clay (RS) soils stabilized with lime (L), natural pozzolana (NP) and their combination (L-NP Keywords Clayey soil, lime (L), natural pozzolana (NP), calcium sulphate, plasticity index (PI), unconfined compressive strength (UCS) IntroductionCivil engineering projects located in areas with inappropriate soils is one of the most frequent problems in the world. Soil stabilization technique has been practiced for several years with the main aim to render the soils capable of meeting the requirements of the specific engineering projects [1]. Hydraulic binders (cement and L) were used as stabilizers in various civil engineering fields. Soils stabilization is a technique that requires the use of hydraulic binders alone or in combination with other mineral additives such as fly ash. Extensive studies have been carried out to study the different effects produced by the use of cement alone or in combination with L [2-4], rice husk ash, [5][6][7] and fly ash [8, 9] on physico-mechanical properties of soils.In the absence of sulphates, the reduction in the repulsion forces between the clay particles (due to the L addition) creates a bond between them and forms flocks. This change caused by L reduces the plasticity index and the maximum dry density of the stabilized soil but increases their optimum moisture content [10]. At the later stage, the increase in the concentration of hydroxyl (OH -) from L raises the pH of the soil, and causes the dissolution of alumina and silica which interact with calcium ions to form cementing products such as calcium silicate hydrates (CSH) and calcium aluminate hydrates (CAH). The formation of these compounds is responsible on the increase in unconfined compressive strength (UCS) values of the stabilized soil [11] and their shear strength values [12].However, in the presence of sulphates, the sulphate ions react with calcium, hydroxyl and aluminium compounds to form expansive phases such as ettringite. Furthermore, the magnitude of damage caused by the ettringite depends on the soil nature, the type and the content of additives [3] and the concentration and the type of cation associated with the sulphate anion [13]. Indeed, the effects caused by the presence of different types of sulphates on the geotechnical properties of soils stabilized with additives have been investigated by several researchers [13][14][15][16][17][18][19].

show abstract

“…Then, it leads to flocculation due to the cation exchanges of which contributes to the increase of loess plasticity and workability. Furthermore, pozzolanic reactions induce the formation of cementitious compounds which lead to the increase of shear strength and stiffness of loess [17][18][19][20][21][22].…”

Section: Introductionmentioning

confidence: 99%

Study on the Compaction Effect Factors of Lime-treated Loess Highway Embankments

Zhang

Wang

2017

CivileJournal

View full text Add to dashboard Cite

This paper presents a study to investigate the effects of water content, lime content and compaction energy on the compaction characteristics of lime-treated loess highway embankments. Laboratory compaction tests were conducted to determine the maximum dry density and optimum water content of loess with different lime Contents (0, 3, 5 and 8%), and to examine the effects of water content, lime content and compaction energy on the value of and . In situ compaction tests were performed to obtain the in situ dry density . The value of − achieves it's maximum value when in situ water content − was larger than the value of (+1-2%). The degree of compaction can hardly be achieved to 100% in the field construction of embankments. Higher water content and compaction energy is needed for optimum compaction.

show abstract

Use of Natural Pozzolana and Lime for Stabilization of Cohesive Soils

Cited by 112 publications

References 27 publications

Soil Stabilization with Lime for the Construction of Forest Roads

Soil Stabilization with Lime for the Construction of Forest Roads

Effect of Calcium Sulphate on the Geotechnical Properties of Stabilized Clayey Soils

Study on the Compaction Effect Factors of Lime-treated Loess Highway Embankments

Contact Info

Product

Resources

About