Suction and Swell Characteristics of Compacted Clayey Soils

Uzundurukan, Soner; Keskin, Sıddıka Nilay; Yıldırım, Handan; Göksan, Turan Selçuk; Çimen, Ömür

doi:10.1007/s13369-013-0852-2

Cited by 12 publications

(8 citation statements)

References 6 publications

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“…Fig ure 7A pres ents the vari a tion of fit ting pa ram eters A1 and B1 with soil pa ram e ters, whereas Fig ure 7B shows a sim i lar para met ric anal y sis of A2 and B2 co ef fi cients. The results pre sented in each fig ure in clude also data taken from Uzundurukan et al (2014). By ana lys ing the re sults, it was found that the re la tion be tween the in dex pa ram e ters of the clay soil and the co ef fi cients in the equa tions (best de scrib ing the rela tion ship of swell in dex ver sus soil suc tion, and swell ing pressure ver sus soil suc tion) is de scribed as a power func tion.…”

Section: Min Eral Com Po Si Tion Of Tested Claysmentioning

confidence: 87%

“…The study has dem on strated that the char ac ter of cor re la tion re la tion ships between swell ing and suc tion pa ram e ters takes the form of a power func tion: e p = A1Y B1 and s sp = A2Y B2 . The lin ear na ture of the cor re la tions be tween these pa ram e ters is also stated in Uzundurukan et al (2014) for com pacted clayey soils. However, a dif fer ent form of the em pir i cal re la tion was a re sult of the adop tion of dif fer ent units for suc tion (this pa ram e ter was expressed in log kPa).…”

Section: Min Eral Com Po Si Tion Of Tested Claysmentioning

confidence: 97%

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Determination of swell index and swelling pressure from suction tests – a case study of Neogene clays from Warsaw (Poland)

Wójcik

Gawriuczenkow

2017

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The pa per pres ents the re sults of swell in dex, swell ing pres sure and soil suc tion tests car ried out on Neo gene clays from War saw, de pend ing on the wa ter con tent, clay frac tion, liq uid limit, plas tic ity in dex, cat ion ex change ca pac ity, and con tent of clay min er als and beidellite. These clays are con sid ered ex pan sive soils in Po land, as they are vul ner a ble to wa ter con tent vari a tions in the ac tive zone, which re sult in their vol ume change and, in con se quence, cause dam age of foun da tions and other con struc tion el e ments. A num ber of phys i cal, chem i cal and min eral prop er ties were de ter mined for these clays. The swell ing tests were car ried out on sam ples precompacted in Proc tor ap pa ra tus, at var i ous ini tial val ues of wa ter con tent. The anal y ses have shown ex po nen tial re la tion of swell in dex, swell ing pres sure and suc tion ver sus wa ter con tent. In ad di tion, the in ves ti gated re la tion ship be tween the suc tion and swell char ac ter is tics of tested clays shows good cor re la tion as a power func tion be tween these pa ram e ters. In ad di tion, va lid ity of cor re la tions be tween fit ting pa ram e ters of ob tained re la tion ships and soil in dex prop er ties, such as clay frac tion, liq uid limit, plas tic ity in dex, cat ion ex change ca pac ity, and con tent of clay min er als and beidellite, have been dem on strated. The em pir i cal re la tions are char ac ter ized by high val ues of the cor re la tion co ef fi cient. A very high fit has also been found for a pro posed re la tion ship be tween the swell in dex and swell ing pres sure for tested clays.

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Section: Min Eral Com Po Si Tion Of Tested Claysmentioning

confidence: 87%

Section: Min Eral Com Po Si Tion Of Tested Claysmentioning

confidence: 97%

Determination of swell index and swelling pressure from suction tests – a case study of Neogene clays from Warsaw (Poland)

Wójcik

Gawriuczenkow

2017

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“…e major reason for studying the swelling and suction behavior of expansive soil rests on the fact that both these features are greatly dependent on the physical, mineralogical, and environmental characteristics of the soil. e appurtenance of both of these features with the change in moisture content due to the change in weather is well depicted in the past [6,7].…”

Section: Introductionmentioning

confidence: 99%

Field‐Obtained Soil‐Water Characteristic Curves of KPK Expansive Soil and Their Prediction Correlations

Zamin

Nasir

Mehmood

et al. 2020

Advances in Civil Engineering

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Expansive clays are found worldwide in arid and semiarid regions. Such soils are considered a natural hazard for civil engineering infrastructures especially when they are lightly loaded. Expansive soils are often unsaturated due to the high absorption capacity of moisture. The damaging effect of expansive soils is intimately related to the distinctive soil-water characteristic in the surficial soil layers subjected to wetting-drying cycles. The soil-water characteristic curve (SWCC) also known as the water-retention curve shows the fluctuation of suction with the moisture content. It is one of the key parameters that have been developed and used by soil engineers for studying the properties of partially saturated soils. Currently, the SWCCs produced by most of the researchers are grounded on lab testing which is quite different from the field-obtained curves. In the current study, the SWCCs for Karak expansive soil have been obtained from in situ testing (field). For this purpose, three sites were selected at Amberi Village (Karak) for instrumentation. An open trench of six-foot depth was excavated in each site and instrumented. Electrical resistivity sensors (G-blocks) and tensiometers were used for matric suction measurements. The gravimetric moisture content was measured with the help of moisture sensors calibrated with a speedy moisture meter. To check the fluctuation of moisture and suction, these instruments were installed at three different depths, that is, 0–2, 2–4, and 4–6 feet. Based on results, the maximum suction of 705.79 kPa was observed in the site “A” in 0–2-foot depth (near the ground surface) with a moisture content of 15 percent. The variations in suction and moisture content follow the almost same trend at low suction; however, the trend was slightly different at the moderate suction range. The measured suction showed a strong correlation with the free swell index (FSI) and moisture content. It was found that the upper layers of expansive soil have high suction than lower layers due to more exposure to the environmental agencies and low density.

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“…Accurate prediction of expansive soils behaviour when hydrated with water is yet a major challenge faced by geotechnical engineers for long time. Expansive clays undergo volumetric deformations (viz., swelling and shrinkage) which in turn induce differential settlements leading to failure of a structure built in/on them or when they are used as geomaterials for construction purposes 1 – 7 . Numerous studies focused on understanding and evaluating the swelling behaviour by establishing interrelations with properties of physical, chemical and mineralogical 8 – 11 .…”

Section: Introductionmentioning

confidence: 99%

Combined effect of mineralogical and chemical parameters on swelling behaviour of expansive soils

Rao

Reddy²,

Mohanty³

et al. 2021

Sci Rep

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Microlevel properties such as mineralogical and chemical compositions greatly control the macro behaviour of expansive soils. In this paper, the combined effect of mineral (i.e. montmorillonite, MMC) and chemical contents (i.e. Ca and Na in their total (T), leachable (L) and exchangeable form (CEC)) on swelling behaviour is investigated in a comprehensive way. Several 3-dimensional (3D) graphs correlating MMC and Ca/Na ratio, together, with swelling property (swelling potential, Sa, and swelling pressure, Sp) are developed. 3D plots, in general, portrayed a non-linear relationship of Sa and Sp with MMC and Ca/Na ratio, together. It is hypothesized that swelling initially is triggered by chemical parameters due to their quick and rapid ionization capability, but the overall swelling phenomenon is largely controlled by MMC. It is importantly found that expansive soils are dominant with divalent Ca++ ions up to MMC of 67% and beyond this percentage, monovalent Na+ ions are prevalent. From the interpretation of results, the maximum Sa of 18% and Sp of 93 kPa is measured at MMC of 43%, (Ca/Na)T of 10–14 and (Ca/Na)L of 2–7. It is concluded from study that total CEC + MMC for determining Sa and (Ca/Na)T + MMC for determining Sp are superior parameters to be considered. The findings of the study also excellently endorsed the results of Foster32, who stated that ionization of Na or Ca depends on the constituent mineral contents. The findings presented herein are unique, interesting and bear very practical significance, as no earlier research work reported such findings by accounting for chemical and mineralogical parameters impact, in tandem, on swelling properties.

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Suction and Swell Characteristics of Compacted Clayey Soils

Cited by 12 publications

References 6 publications

Determination of swell index and swelling pressure from suction tests – a case study of Neogene clays from Warsaw (Poland)

Determination of swell index and swelling pressure from suction tests – a case study of Neogene clays from Warsaw (Poland)

Field‐Obtained Soil‐Water Characteristic Curves of KPK Expansive Soil and Their Prediction Correlations

Combined effect of mineralogical and chemical parameters on swelling behaviour of expansive soils

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