Enhancement in Effectiveness of Cemented Stone Columns for Soft Clay Ground Improvement by Providing Underreamed Bulbs

Golait, Yadav Sambhaji; Padade, A. H.

doi:10.1061/(asce)gm.1943-5622.0001282

Cited by 12 publications

(1 citation statement)

References 31 publications

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“…Therefore due to this pozzolanic reaction between Ca (OH) 2 (a byproduct of OPC hydration) a C-S-H binder matrix formation takes place as a result mortar becomes denser and stronger in addition. Sambhaji and Harihar (2018) [20]conducted a study of cemented porous material to improve the soft clay, they considered two cases one is of bulb formation at the bottom of stone column and the other one at an intermediate level of depth which is equal to 5 times its diameter which involves load tests of six unit cells in laboratory which consists of bulb cemented stone columns, they concluded that under reamed cement column were extremely effectual in enhancing the load capacity and soft clay stiffness. Kolathayar et al(2019) [13] they studied the effect of coir geocells and high density polyethylene on the load capacity of sand bed both reinforced and unreinforced with these two materials by conducting a model test tank in the laboratory after performing various plate load tests at the system.…”

Section: Literature Surveymentioning

confidence: 99%

Effect of Grouted Granular Column on the Load Carrying Capacity of the Expansive soil

Verma*¹,

Sahu²

2019

IJRTE

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Due to the scarcity of land for the construction of industrial, commercial, and transportation structures for development in urban areas, it is very necessary to use the places which have weak strata. This has become very mandatory to use the land which has poor engineering properties due to the unavailability of land. In the recent years granular columns have come under the extensive use for increasing the load carrying capacity and reducing the settlement in the expansive soil and loose sand. Nowadays to increase the stability of the foundation, granular columns are being widely used. Traditional columns are driven into the weak expansive soil stratum and maintain its stability from lateral confinement, which is generally due to the reaction from the surrounding stiffened expansive soil. However, this is not so easy to support loose soil, an additional lateral support may have to be provided to stabilize it and reduce its settlements. This study aims to overcome this weakness in soil by wrapping the granular column in geotextile layer to enhance the lateral reinforcement. In the present paper the discussion is about the variation in load carrying capacity and settlement characteristics of granular column (made up of cement fly ash and sand in a definite proportion instead of aggregates and stones) and analyzing its effect on the expansive soil by comparing its results with geotextile encased columns. In this process the study investigates the improvement of load carrying capacity of a single granular column encased with geotextile through model test.

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Section: Literature Surveymentioning

confidence: 99%