A Study to Investigate the Influence of Soil Properties on Suction

Sreedeep, S.; Singh, D. N.

doi:10.1520/jte11981

Cited by 40 publications

(11 citation statements)

References 10 publications

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“…This fitting function is widely used in the literature and has been formulated based on the more realistic pore size distribution of (Fredlund and Xing, 1994;Miller et al, 2002;Singh and Kuriyan, 2002;Sreedeep and Singh, 2005).…”

Section: Establishment Of the Soil-water Characteristic Curvementioning

confidence: 99%

“…It must be noted that most of the methods that are reported in the literature (Fredlund and Rahardjo, 1993;Lee and Wray, 1995;ASTM D 3152;ASTM D 5298;ASTM D 6836;Sreedeep and Singh, 2005) for measuring soil suction are capable of yielding w m . On the other hand, w of the soil has been measured using a transistor or thermocouple psychrometers (Richards and Ogata, 1961), filter papers (Leong et al, 2002) and a dew point potentiameter (WP4) (Leong et al, 2003;Thakur et al, 2005a, b).…”

Section: Introductionmentioning

confidence: 99%

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Methodology for determination of osmotic suction of soils

Sreedeep

Singh

2006

Geotech Geol Eng

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Soil suction constitutes of the matric suction and the osmotic suction. Several studies have been conducted and reported by researchers that reveal the importance of the matric suction on unsaturated soil properties. However, not many efforts have been made to develop methodologies that can be employed for measuring osmotic suction of the soil and to understand its influence on unsaturated soil properties. With this in view, efforts were made to utilize the results of the pressure membrane extractor (PME) and the dewpoint potentiameter (WP4), which measure matric and total suction of the soil, respectively. Details of the methodology developed to achieve this are presented in this technical note.Notations: c d : dry unit weight; w: total suction; w m : matric suction; w o : osmotic suction; AEV: air entry value; a f n f : fitting parameters primarily dependent on the air entry value AEV; h r : suction (in kPa) corresponding to the residual water contentw r ; m f : fitting parameter that depends on the residual water contentw r ; S r : degree of saturation; S rf : degree of saturation of the sample after saturation; w(w): gravimetric water content at any suction w; w: gravimetric water content; w f : final gravimetric water content; w r : residual water content; w S : gravimetric water content at saturation.

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Section: Establishment Of the Soil-water Characteristic Curvementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Methodology for determination of osmotic suction of soils

Sreedeep

Singh

2006

Geotech Geol Eng

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“…Since the experimental procedures adopted for determining the soil-suction-water-content relationship are time consuming and cost intensive, recent research has placed a major focus on indirect estimations of the SWCC. Whereas the shape of the curve depends on many basic soil properties, such as the type, size, and shape of the minerals in the soil's composition, and on the environmentally induced factors that determine the fabric, porespace geometry, and void ratio of soils, as well as the chemical composition of the pore water (Sreedeep and Singh 2005), it is difficult to find a generally valid mathematical expression to describe it. However, several analytical functions for predicting the SWCC can be found in the literature (Ross et al 1991;Kosugi 1994;Rossi and Nimmo 1994;Or and Tuller 1999;Fayer and Simmons 1995;Groenevelt and Grant 2004;Tuller and Or 2005;Khlosi et al 2006;Thakur et al 2006;Frydman and Baker 2009;Chin et al 2010;Salager et al 2010;Sreedeep and Singh 2010).…”

Section: Introductionmentioning

confidence: 99%

Prediction of the soil-water characteristic curve based on the specific surface area of fine-grained soils

Dolinar

2014

Bull Eng Geol Environ

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This paper presents a new, mathematical expression for describing the soil-water characteristic curve (SWCC) over a range of water contents where finegrained soils exhibit plastic properties. The finding that the relationship between the soil suction and the water content can be expressed in terms of the specific surface area of soils was based on experimentally determined relationships between the water content and the soil's specific surface area, as well as between the thickness of the adsorbed water layer on the external surfaces of clay minerals and the quantity of free-pore water for the water content between the liquid and plastic limits. The double-porosity model for the pore-space geometry was considered, as well as that all the water in the clay-aggregates is adsorbed, and that the adsorption mechanism is dominated by the van der Waals forces. The validity and applicability of the proposed equation for the SWCC estimation was verified on three samples in which the SWCC was measured, as well as the specific surface area, the mineralogical and chemical compositions, the grain size distribution, and the Atterberg limits. Despite the fact that good correlations were found between the calculated parts of the SWCC and the measured, the practical applicability of the proposed equation remains problematic due to the values of Hamaker constant, which are not yet well defined for different minerals.

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“…The uniqueness of the soil water retention curve, SWRC, has been studied by earlier researchers and it has been reported that it gets influenced by various factors such as the soil type (Fredlund et al 2002, Pham et al 2005, Frydman and Baker 2009, Noh et al 2011, water F o r P e e r R e v i e w O n l y content and compaction efforts (Tinjum et al 1997, Vanapalli et al 1998, 1999Pang 2000a, 2000b;Miller et al 2002, Sreedeep and Singh 2005, Thakur et al 2005, 2006, initial void ratio (Kawai et al 2000), stress history (Delage and Lefebvre 1984, Vanapalli et al 1998, 1999Pang 2000a, 2000b;Marinho 2005), and the path viz., drying-or wetting-path, adopted to achieve it (Likos and Lu 2002, Yang et al 2004, Pham et al 2005, Agus and Schanz 2006, Konyai et al 2006, Mohammed and Sharma 2007, Fredlund et al 2011, Jayanth et al 2012. Incidentally, earlier studies have also noted the effect of initial state of soil (intact, slurried or compacted) on its SWRC (Fredlund et al, 2002;Pham et al, 2008).…”

Section: Introductionmentioning

confidence: 99%