Analytical and Experimental Studies on Cemented Stone Columns for Soft Clay Ground Improvement

Golait, Yadav Sambhaji; Padade, A. H.

doi:10.1061/(asce)gm.1943-5622.0000779

Cited by 29 publications

(5 citation statements)

References 31 publications

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“…The type and size of the SC materials play an important role in governing the load-settlement behaviour of the SC stone since they affect the strength parameters. The impact of using alternative materials to constructs SC's was appraised in several studies [14,25,28,38,50,53]. The stronger the material, the better the performance of the SC.…”

Section: Sc Materialsmentioning

confidence: 99%

The Experimental Design of Stone Columns' Modelling using Small-Scale Unit Cells: A Review

Almaliki¹,

Selamat²

2018

IJET

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This paper presents a review of the experimental design of the small-scale single stone column that adopts the unit cell concept. Materials and methods used in experiments along with their effects and implication have been appraised. The reviewed cases showed that clayey soils were often used to construct the host ground. Steel cylindrical tanks were used with diameters ranging from 15 to 60 cm and heights ranging from 20 to 120 cm. For such scale, the used stone size is 2 to 10 mm. Plates load test can be carried out on the entire tank or on the stone column. The load has been imposed at a constant settlement rate of 1 to 1.25 mm/min in order to simulate the stage immediately after construction. The review shows that remoulding and replacement have been often practised for the construction of the host ground and the stone column, respectively.

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Section: Sc Materialsmentioning

confidence: 99%

The Experimental Design of Stone Columns' Modelling using Small-Scale Unit Cells: A Review

Almaliki¹,

Selamat²

2018

IJET

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“…Two and three-dimensional finite element methods provide tools that overcome many simplifications of the semi-empirical or analytical methods that allow simulation of field measurements, installation effects of stone column groups, and parametric study. The models can also investigate the impact of variations in geometry across the problem space, multiple load cases, time effects, and variations of soil properties, studies of deformations, and provide design guidance [17,26,33,35,39,40,44]. However, limited research, actual case studies, field tests, and three three-dimensional finite element methods have been reported using vibro replacement stone columns to support fuel tanks built on thick sand deposits.…”

Section: Introductionmentioning

confidence: 99%

A case study of applying wet top-feed vibro replacement stone columns as foundation support of fuel tank in the reclamation area

Jamsawang,

Bergado,

Voottipruex

et al. 2024

Preprint

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This paper reports a case study of applying wet and top feed vibro replacement stone columns to support the 20-m-high fuel tank built on loose to medium sand deposits. The design considerations, installations, applications, field tests, correlations, and subsequent three-dimensional finite element analyses are presented. The soil profile of the case study comprised approximately 8 to 12 m thick loose to medium-dense silty sand layers with a high groundwater table. The 1-m-diameter stone columns were installed in a triangular pattern with a spacing of 2.1 m. The improvement depths were 8, 11, and 12 m. After construction was completed, quality assurance of the stone column installation by various field tests was performed. Based on the hydro test results, the improved ground could carry an allowable bearing capacity of 200 kPa transferred from the 20-m-high fuel tank and exhibited a maximum settlement of smaller than 50 mm, which met the design criteria of this project. Due to reasonable quality control during stone column installation, the tank’s tilt caused by the non-uniformity of the improved sands was negligible because it was lower than 10 mm. The enhanced strength ratio of the surrounding sands was 2 to 3 due to the desification effect. The simulated data confirmed the observed results, and the verification or confirmatory test results illustrated the successful applications of the vibro-replacement stone columns.

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“…Several studies have been conducted to examine the performance of stone columns applied to improve soft clay under embankment through experimental investigations, numerical modelling, and mathematical techniques. The findings obtained have been proven that the formation of stone columns substantially reduces the settlement and total stress acting on the weak soil bed [1,4,[10][11][12][13]. Stone columns are usually constructed using primary aggregate or natural stone aggregate.…”

Section: Introductionmentioning

confidence: 99%

Numerical analysis of embankment resting on floating bottom ash columns improved soft soil

Abbil

Kassim

Ullah

et al. 2022

IOP Conf. Ser.: Earth Environ. Sci.

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The construction of embankment over soft clay is quite a challenging job for the geotechnical engineer, which may results in a large settlement, bearing failure and stability issues. Stone columns can be used to minimize the settlement and increase the bearing capacity in such conditions. This study was carried out to investigate the behaviour of bottom ash columns underneath embankments using numerical modelling. The soft soil improved with bottom ash columns under the embankment subjected to traffic-induced loading was simulated in Plaxis 3D foundation software. The study variables include three area replacement ratios (Ar) of 10%, 15% and 20% and two columns length of 5m and 7.5m. The results indicated that enlarging the Ar and length of columns significantly reduced the final settlement and consolidation time. The maximum settlement reduction of 58% was reported for the Ar of 20% with 7.5m column depth. The study suggests that bottom ash columns can be used to improve soft soil underneath the embankment.

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Analytical and Experimental Studies on Cemented Stone Columns for Soft Clay Ground Improvement

Cited by 29 publications

References 31 publications

The Experimental Design of Stone Columns' Modelling using Small-Scale Unit Cells: A Review

The Experimental Design of Stone Columns' Modelling using Small-Scale Unit Cells: A Review

A case study of applying wet top-feed vibro replacement stone columns as foundation support of fuel tank in the reclamation area

Numerical analysis of embankment resting on floating bottom ash columns improved soft soil

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