Effect of Clay Mineralogy on Coefficient of Consolidation

Robinson, R. G.; Allam, MM

doi:10.1346/ccmn.1998.0460514

Cited by 101 publications

(46 citation statements)

References 9 publications

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“…Whereas, the physico-chemical interactions between particles include the interaction between the particles through the diffuse double layers [25,31,32]. According to Robinson and Allam [30] both increasing and decreasing trends are observed in C v values for soils of unknown clay mineralogy. Coefficient of Consolidation (C v ) increases with consolidation pressure for kaolinite but decreases with consolidation pressure for montmorillonite.…”

Section: Coefficient Of Consolidation (C V )mentioning

confidence: 99%

Hydraulic conductivity and compressibility characteristics of bentonite enriched soils as a barrier material for landfills

Sobti

Singh

2017

Innov. Infrastruct. Solut.

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An experimental program was undertaken for the index and engineering properties (compaction, hydraulic conductivity and consolidation) of various mix proportions of sand, silt and coal ash with bentonite as an admixture to act as a barrier material for landfills. Thirtyfour mixes were tested in all with different categories of mixes comprising of bentonite-sand, bentonite-sand-coal ash, bentonite-coal ash, bentonite-silt and bentonite-siltcoal ash mixes with bentonite content varying from 0 to 40% and coal ash from 0 to 90%. A series of hydraulic and mechanical tests were conducted to assess the Atterberg's limits, hydraulic conductivity, compressibility characteristics, etc. of the mixes. The influence of bentonite and coal ash content, effective consolidation pressure and void ratio on the hydraulic conductivity and consolidation indices (compression index, swell index, coefficient of consolidation) was studied. The hydraulic conductivities of the sandbentonite mixtures decreased from 1.75 9 10 -5 to 3.34 9 10 -11 m/s, when the bentonite content increased from 0 to 40%. An optimum amount of admixture viz. bentonite to be added to the base materials i.e. sand, silt and coal ash to obtain different category of mixes was ascertained. Disregarding the 5% soil-bentonite mix in case of sand and coal ash, an optimum mix of 10% sand-bentonite, 10% coal ash bentonite and a range of 5-10% for silt-bentonite is recommended for use as a barrier material considering the present study. The addition of coal ash to bentonite had a favourable effect on the properties of the mix in terms of hydraulic conductivity, to act as a barrier material.

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Section: Coefficient Of Consolidation (C V )mentioning

confidence: 99%

Hydraulic conductivity and compressibility characteristics of bentonite enriched soils as a barrier material for landfills

Sobti

Singh

2017

Innov. Infrastruct. Solut.

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“…This unique behavior of clay soils depends on the surface area of the clay particles. This to a large extend determines and or affects the physico-mechanical properties of the soils [4][5][6][7][8]. The surface area of clay particle depends on the type of the clay mineral.…”

Section: Introductionmentioning

confidence: 99%

Influence of Clay Mineralogy on Plasticity of Lateritic Soils

Alhassan¹,

Mustapha²,

Mesaiyete³

2014

IOSRJMCE

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“…The soil particles become more oriented with increase in effective consolidation and for more plastic soil forces mobilize and offer more resistance to compressive pressure. Robinson & Allam [10] found from their studies on the response of cv to σv increase in clays that it is governed by the mechanical and physicochemical factors that govern the compressibility.…”

Section: Coefficient Of Volume Compressibility (Mv) Consolidation (Cmentioning

confidence: 99%

1-D Compressibility Parameters of Lightly Solidified Dredged Marine Soil (Dms) Using Cement, GGBS and Coarse Sand

Kalianan¹

2017

GEOMATE

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A consistent dredging is essential for the development along the coast and the maintenance of shipping routes. The dredging operation dislodges sediments from the seabed, and the retrieved materials, termed dredged marine soils, are considered a geowaste for dumping. Therefore reusing the material will benefit the civil sectors, and one option is solidifying with other materials, which are, cement, ground granulated blast furnace slag (GGBS) and sand. The present investigation is on a dredged marine soil (DMS) from Kuala Perlis state in Malaysia where in a laboratory study was undertaken to contemplate the compressibility characteristics of DMS with cement, GGBS and sand admixtures. Cement is the major constituent of concrete which is produced by natural raw materials like limestone rock, clay and chalk etc. These are produced by blasting quarries. Industrial wastes like Ground Granulated Blast Furnace Slag (GGBS) show chemical properties similar to cement. An attempt was made to understand the influence of cement plus GGBS as binder and sand as a granular material by studying the improved settlement rate of consolidation. The results showed that the optimum binder content was from 3C7G_20 specimen and when sand was added to it, it present that settlement decreased with increasing sand content. Binder combinations involving ratio of cement to GGBS of 3 to 7 with addition of sand were effective in improving the settlement and consolidation rate when compared to the performance of cement alone as binder.

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Effect of Clay Mineralogy on Coefficient of Consolidation

Cited by 101 publications

References 9 publications

Hydraulic conductivity and compressibility characteristics of bentonite enriched soils as a barrier material for landfills

Hydraulic conductivity and compressibility characteristics of bentonite enriched soils as a barrier material for landfills

Influence of Clay Mineralogy on Plasticity of Lateritic Soils

1-D Compressibility Parameters of Lightly Solidified Dredged Marine Soil (Dms) Using Cement, GGBS and Coarse Sand

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