Physio-Chemical Changes in Clay Caused by Ion Migration from Lime Piles

Barker, J. E.; Rogers, C. D. F.; Boardman, D. I.

doi:10.1061/(asce)0899-1561(2006)18:2(182)

Cited by 34 publications

(21 citation statements)

References 7 publications

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“…Similar observations were made by Barker et al (2006). The plasticity index increases with increases in the lime content (Clare and Cruchley, 1957;Prakash et al, 1989;Bell, 1996).…”

supporting

confidence: 74%

Engineering Properties of Bentonite Stabilized with Lime and Phosphogypsum

Kumar

Dutta

Mohanty

2014

Slovak Journal of Civil Engineering

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Engineering properties such as compaction, unconfined compressive strength, consistency limits, percentage swell, free swell index, the California bearing ratio and the consolidation of bentonite stabilized with lime and phosphogypsum are presented in this paper. The content of the lime and phosphogypsum varied from 0 to 10 %. The results reveal that the dry unit weight and optimum moisture content of bentonite + 8 % lime increased with the addition of 8 % phosphogypsum. The percentage of swell increased and the free swell index decreased with the addition of 8 % phosphogypsum to the bentonite + 8 % lime mix. The unconfined compressive strength of the bentonite + 8 % lime increased with the addition of 8 % phosphogypsum as well as an increase in the curing period up to 14 days. The liquid limit and plastic limit of the bentonite + 8 % lime increased, whereas the plasticity index remained constant with the addition of 8 % phosphogypsum. The California bearing ratio, modulus of subgrade reaction, and secant modulus increased for the bentonite stabilized with lime and phosphogypsum. The coefficient of the consolidation of the bentonite increased with the addition of 8 % lime and no change with the addition of 8 % phosphogypsum.

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“…Similar observations were made by Barker et al (2006). The plasticity index increases with increases in the lime content (Clare and Cruchley, 1957;Prakash et al, 1989;Bell, 1996).…”

supporting

confidence: 74%

Engineering Properties of Bentonite Stabilized with Lime and Phosphogypsum

Kumar

Dutta

Mohanty

2014

Slovak Journal of Civil Engineering

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“…Many stabilization methods have focused on the effects of lime piles on clay performance (Kitsugi and Azakami, 1982;Rogers and Glendinning, 1996, 2001Mathew and Rao, 1997;Rajasekaran and Narasimha Rao, 2002;Barker et al, 2006Barker et al, , 2007Okyay and Dias, 2010). Previous studies have found that ion migration causes an increase in density and a decrease in the water content of surrounding clay with lime piles, and thus an increase in strength and stiffness Glendinning, 1996, 1997;Mathew and Rao, 1997;Rajasekaran and Narasimha Rao, 2002;Barker et al, 2006).…”

Section: Introductionmentioning

confidence: 96%

Physicochemical and index properties of loess stabilized with lime and fly ash piles

Pei

Zhang

et al. 2015

Applied Clay Science

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“…ions. Barker et al (2006) identifies that the rate and degree of migration are mineralogy, water content and also hydraulic gradient dependent. Some researchers have also attributed the increase in calcium ion migration to the changes in both shrinkage and plastic limits.…”

Section: Calcium Ion Contentmentioning

confidence: 98%

“…It is envisaged that water and both calcium and hydroxyl ions migrate from the fresh concrete to the surrounding soil and affect soil/pile interaction. The effect of migration of ions in soil surrounding lime columns have been investigated by Rogers and Glendinning (1996), Barker et al (2006) and Larson et al (2009) amongst others. These studies show that zone of soil up to 50 mm is significantly affected and they confirm the complexity of the mechanisms involved.…”

Section: Introductionmentioning

confidence: 99%

Changes in Properties of Clay Surrounding Cast in situ Piles

2010

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Often pile load carrying capacity is derived from friction between pile and the surrounding soil. This magnitude of friction mobilised, in the main, depends on pile material, properties of the soil and method of construction. In terms of construction, piles may be either pre-formed or cast in situ. Cast in situ piles are formed by boring a hole and filling it with concrete. It is envisaged that water and both calcium and hydroxyl ions migrate from the fresh concrete to the surrounding soil and have an impact on soil properties. An experimental study was undertaken to examine the extent of soil (Oxford clay) around the pile was affected by fresh concrete. Time related study included load tests on model piles. The investigation showed that there was about 4% increase in the moisture content of the surrounding soil soon after fresh concrete was placed and with time this dissipated. It showed that there was an increase in both hydroxyl and calcium ions in the vicinity of the pile. These also affected the adhesion factor, which increased with time to a limiting value. Time related tests showed that there was a small increase in pile load capacity with time.

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Physio-Chemical Changes in Clay Caused by Ion Migration from Lime Piles

Cited by 34 publications

References 7 publications

Engineering Properties of Bentonite Stabilized with Lime and Phosphogypsum

Engineering Properties of Bentonite Stabilized with Lime and Phosphogypsum

Physicochemical and index properties of loess stabilized with lime and fly ash piles

Changes in Properties of Clay Surrounding Cast in situ Piles

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