Shrinkage Curve: Experimental Study and Modelling

Bensallam, Saad; Bahi, Lahcen; Ejjaaouani, Houssine; Shakhirev, Vladimir

doi:10.5829/idosi.ije.2012.25.03a.02

Cited by 14 publications

(3 citation statements)

References 12 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…périodes humides et sèches en raison des variations saisonnières [23][24], les phénomènes de retraitgonflement des sols argileux et des formations géologiques argileuses induisent des tassements différentiels [25] qui se manifestent par l'instabilité des ouvrages de génie civil construits [26], l'apparition de fissures et autres désordres dans ces constructions [27], affaiblissement différentiel au-dessous des fondations peu profondes [28]. Les photos la figure 12.A illustrent les fissures au niveau des constructions situées à 100 de la voie ferrée dans le secteur d'étude et la figure 12.B représente les fissures et glissement de la chaussée de la route nationale n° 9 reliant Settat à Marrakech à 1 Km environ de la voie ferrée.…”

Section: Cmss-2017unclassified

Study of the degradation of the geometry of the railway between the pk 80 and 105 at the plateau of Settat (Morocco)

et al. 2018

View full text Add to dashboard Cite

Abstract. The plateau of Settat is formed by Paleozoic age formations surmounted by a subhorizontal cover made up mainly of Cretaceous sedimentary rocks formed of limestones, sandstones and clays with alternating marly limestones and marls. The study area is characterized by a dry to semi-dry climate, an endorheic hydrographic network that flows into the plain, and is affected by a hydraulic fracturing network of WNW-ESE and NE-SW directions. These factors cause repetitive and cyclical disturbances and disorders recorded on the railway section between Settat and Machraa Ben Abbou and are due to the shrinkage-swelling of the clay formations. The statistical and critical analysis of the defects identified by the device of measuring the geometric parameters of the railway, coupled with an exploitation of the Optical and Radar satellite images, made it possible to refine the geological, hydrological and structural study of the plain studied. These approaches have shown that this hazard has been favored by the existence of recent clayey and swelling formations under the influence by the climatic, hydrological and geological contrasts marked by intense hydraulic fracturing of the zone.

show abstract

Section: Cmss-2017unclassified

Study of the degradation of the geometry of the railway between the pk 80 and 105 at the plateau of Settat (Morocco)

et al. 2018

View full text Add to dashboard Cite

show abstract

“…The volume change will be expressed as the quantification of the void ratio induced by changing the water content subjected to various methods of drying. The water content reduction and the subsequent pore void changes are represented as the soil ashrinkage curve (SSC) [11].…”

Section: Introductionmentioning

confidence: 99%

Soil Shrinkage Characterization of Low Plasticity Soil Using Digital Image Analysis Process

Sharanya

Heeralal

Thyagaraj

2021

IJE

View full text Add to dashboard Cite

“…The methods for soil shrinkage measurement can be divided into three categories based on the dimensional number of soil samples: (i) one‐dimensional measurement, such as the determination of the coefficient of linear extensibility (COLE) by displacement transducer/sensors (Bensallam et al, 2012; Braudeau and Mohtar, 2009) or calipers and rulers in the vertical direction (Cornelis et al, 2006; Peng et al, 2007, 2012; Schafer and Singer, 1976); (ii) two‐dimensional measurement, which involves, in addition to the vertical shrinkage, determining horizontal shrinkage with calipers (Huang et al, 2011), laser scanning (Braudeau et al, 1999), and photo graphing (Peng et al, 2007; Tang et al, 2011); (iii) three‐dimensional measurement to determine the volume change of aggregates or soil clods by wax/saran resin/paraffin coating (Bronswijk, 1991; Gray and Allbrook, 2002), balloon methods (Gapak et al, 2017; Tariq and Durnford, 1993), laser scanning (Rossi et al, 2008; Sander and Gerke, 2007), and a digital camera (Stewart et al, 2012). For the one‐ and three‐dimensional measurements, the soil volume changes during dehydration are assumed to be isotropic shrinkage (i.e., Bensallam et al, 2012; Mallory et al, 2011; Peng et al, 2012; Stewart et al, 2012; te Brake et al, 2013). However, at the soil layer and core scales, the anisotropic shrinkage of clayey soils has been recognized (Chertkov et al, 2004, 2005; Cornelis et al, 2006; Gapak et al, 2017; Huang et al, 2011; Peng and Horn, 2007), and the vertical and horizontal shrinkage deformations result in subsidence and cracking when drying (Chertkov et al, 2004; Stewart et al, 2012, 2016; te Brake et al, 2013).…”

mentioning

confidence: 99%

A Novel and Facile Method for Characterizing Shrinkage Geometry along the Granitic Soil Profile

Wei

Xue-yin

et al. 2018

Soil Science Soc of Amer J

View full text Add to dashboard Cite

A simple and facile approach was proposed for measuring the anisotropic shrinkage. Subsidence was dominant for soils in the loose and aggregated structure. Horizontal shrinkage was predominant for soils with the horizontal arrangement of plate particles The shrinkage behavior of granite soils was controlled by clay content and pore structure. Soil volume change resulting from frequent drying–wetting cycles leads to severe erosion and landslides in granite regions. Limited attempts have been made to investigate the shrinkage geometry of these soils. Here, a new method was proposed for characterizing soil shrinkage behavior by testing cylindrical specimens of undisturbed granitic soils sampled separately in vertical and horizontal directions at the pedogenic layers (i.e., surface [L1], lateritic [L2 and L3], sandy [L4], and detritus [L5] layers). For L1, the coefficient of linear extensibility (COLE) was larger in the vertical than in the horizontal direction, whereas it was the opposite for L2 and L3. For L4 and L5, the COLE showed no significant differences between the two directions. A modified van Genuchten equation fitted well with the COLE curves (p < 0.01). The shrinkage potential decreased in the order of L3 > L2 > L1, L4 > L5. Subsidence was dominant for the L1 soil due to the loose‐aggregated structure, whereas cracking was dominant in the lateritic layer soils due to the horizontal arrangement of clay particles. The shrinkage geometry for L4 and L5 was largely determined by soil structure inherited from the configuration of granite rock. The shrinkage behavior of granite soils was controlled by clay content and pore structure. This new method of measuring shrinkage geometry is accurate, low cost, nondestructive, and labor saving but remains to be improved and validated on a wide range of soil types.

show abstract

Shrinkage Curve: Experimental Study and Modelling

Cited by 14 publications

References 12 publications

Study of the degradation of the geometry of the railway between the pk 80 and 105 at the plateau of Settat (Morocco)

Study of the degradation of the geometry of the railway between the pk 80 and 105 at the plateau of Settat (Morocco)

Soil Shrinkage Characterization of Low Plasticity Soil Using Digital Image Analysis Process

A Novel and Facile Method for Characterizing Shrinkage Geometry along the Granitic Soil Profile

Contact Info

Product

Resources

About