Utjecaj fosfogipsa na čvrstoću ekspanzivnog tla stabiliziranog vapnom

doi:10.14256/jce.1097.2014

Cited by 12 publications

(8 citation statements)

References 44 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The stabilized soil specimens were also subjected to microstructural analysis to perceive the changes in the soil structure. The methodology has been adopted from earlier works [31,32].…”

Section: Methodsmentioning

confidence: 99%

Select geotechnical properties of a lime stabilized expansive soil amended with bagasse ash and coconut shell powder

James¹,

Pandian

2018

Selected Scientific Papers - Journal of Civil Engineering

View full text Add to dashboard Cite

Lime stabilization has been and still is one of the most preferred methods for stabilization of expansive soils. However, in the recent times, utilization of solid waste materials in soil stabilization has gained prominence as an effective means to manage wastes generated from various sources. In this work, an attempt has been made to utilize waste materials from two sources as auxiliary additives to lime in the stabilization of an expansive soil. Bagasse ash (BA), a waste by-product from the sugar industry and Coconut shell powder (CSP), a processed waste obtained from left over coconut shells of oil extraction industry were used as auxiliary additives. An expansive soil obtained from a local field was subjected to chemical, mineral, microstructural and geotechnical characterization in the laboratory and stabilized using 3% lime. The waste materials were subjected to chemical, mineral and microstructural characterization. The stabilization process was amended with four different contents viz. 0.25%, 0.5%, 1% and 2% of BA and CSP separately and the effect of the amendment was studied on the unconfined compressive strength (UCS), plasticity, swell-shrink and microstructural characteristics of the expansive soil. The results of the study indicated that BA amendment of lime stabilization performed better than CSP in improving the UCS, plasticity, swell-shrink and microstructure of the lime stabilized expansive soil.

show abstract

“…The stabilized soil specimens were also subjected to microstructural analysis to perceive the changes in the soil structure. The methodology has been adopted from earlier works [31,32].…”

Section: Methodsmentioning

confidence: 99%

Select geotechnical properties of a lime stabilized expansive soil amended with bagasse ash and coconut shell powder

James¹,

Pandian

2018

Selected Scientific Papers - Journal of Civil Engineering

View full text Add to dashboard Cite

show abstract

“…The lime content of the stabilized soil specimens at which the maximum UCS was achieved was taken as the OLC. The above methodology is based on similar earlier work (James & Pandian, 2014b).…”

Section: Determination Of Lime Dosagementioning

confidence: 99%

Strength and microstructure of micro ceramic dust admixed lime stabilized soil

James¹,

Pandian²

2018

rdlc

View full text Add to dashboard Cite

The use of micro ceramic dust (CD) as an additive to lime in soil stabilization has been analysed in this study. CD was obtained by crushing and sieving of waste ceramic tiles from construction debris. The initial consumption of lime (ICL) for soil modification was determined using Eades and Grim pH test. In order to study the effect of lime content on soil stabilization, three different lime contents (below ICL, ICL and above ICL) were used for stabilizing the soil. These three lime contents were amended with various amounts of CD to study its effect on the strength of the stabilized soil. Unconfined compression strength (UCS) tests were carried out on the stabilized soil specimens of dimensions 38mm x 76mm at different ages of curing. The spent UCS samples were crushed and sieved to carry out Atterberg limits and free swell tests followed by x-ray diffraction (XRD) and scanning electron microscopy (SEM) tests for determining changes in microstructure. The results indicated that the addition of CD resulted in a marginally negative influence on the early strength of the stabilized soil at three days of curing whereas it enhanced the delayed strength of the soil at 28 days of curing, gaining between 12-14% strength. The effect of CD on the plasticity and swell-shrink of lime stabilized soil indicated a further reduction in plasticity and swell-shrink nature. The mineralogy of the amended soil revealed the formation of CSH and CAH minerals responsible for strength gain. SEM images used to analyse the microstructure of the virgin and stabilized soil, indicated the formation of a dense and compact microstructure. Finally, it was concluded that CD can be adopted as an auxiliary additive to lime in stabilization of expansive soil with provision of sufficient curing and the delayed onset of early strength due to CD can be overcome by using higher lime content in stabilization.Key words: Expansive soil, lime stabilization, ceramic dust, strength, mineralogy, microstructure Resumen El uso de polvo de cerámica micro (CD) como un aditivo a la cal en la estabilización del suelo se ha analizado en este estudio. El CD se obtuvo triturando y tamizando las baldosas cerámicas de desecho de los desechos de la construcción. El consumo inicial de cal (ICL) para la modificación del suelo se determinó usando Eades y Grim pH test. Con el fin de estudiar el efecto del contenido de cal sobre la estabilización del suelo, se utilizaron tres contenidos diferentes de cal (por debajo de ICL, ICL y superior ICL) para estabilizar el suelo. Estos tres contenidos de cal fueron modificados con varias cantidades de CD para estudiar su efecto sobre la resistencia del suelo estabilizado. Se realizaron pruebas de resistencia a la compresión no confinada (UCS) en las muestras de suelo estabilizado de dimensiones 38 mm x 76 mm a diferentes edades de curado. Las muestras de UCS gastadas se trituraron y se tamizaron para llevar a cabo los límites de Atterberg y las pruebas de hinchamiento libre seguidas por difracción de rayos X (XRD) y microscop...

show abstract

“…All samples were prepared to the same density and water content. Similar procedure was followed by earlier researchers [6,9,34]. After molding, the samples were ejected and immediately placed in sealable polythene covers for curing without losing moisture.…”

Section: E Methodologymentioning

confidence: 97%

“…The soil was prepared in accordance with BIS (Bureau of Indian Standards) code and its geotechnical properties were characterized in the laboratory. Table 1 shows the properties of the soil determined in a previous investigation [9].…”

Section: A Virgin Soilmentioning

confidence: 99%

“…Numerous researchers have worked on the utilization of different solid wastes as pozzolans in soil stabilization. Fly ash (FA) [2,3], rice husk ash [4,5], ground granulated blast furnace slag [6,7], phosphogypsum [8,9], bagasse ash [10,11], waste paper sludge ash [12], press mud [13,14], red mud [15,16] and egg shell ash [15,17] are some of the materials that have been used as pozzolans in lime stabilization of soils. It has been found that using industrial solid wastes as auxiliary additives to cement/ lime stabilization further improves the stabilization process [18].…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Pozzolanic benefit of fly ash and steel slag blends in the development of uniaxial compressive strength of lime stabilized soil

James

David²,

Nagarathinam³

et al. 2018

Rev. Fac. Ing.

View full text Add to dashboard Cite

This investigation involved the examination of pozzolanic benefits that resulted from the amendment of lime stabilization of a soil by using a combination of two industrial wastes viz. Fly ash (FA) and Steel Slag (SS). Two lime contents (6% and 8%), which represented the control specimens, were selected for stabilizing the soil, one above the Initial Consumption of Lime (ICL) and the other above the Optimum Lime Content (OLC), respectively. The lime to total solid waste ratio was maintained as 1:1, and the FA/SS ratio varied within the total solid waste content adopted for amending lime stabilization. The unconfined compressive strength (UCS) of the stabilized samples were determined by casting UCS specimens of 38 x 76 mm and cured for 2 hours, 7, 14 and 28 days. After curing, the specimens were strained until failure, to study the pozzolanic benefits of adding FA-SS. The results revealed that the addition of FA and SS improved the pozzolanic strength, ranging from 3.5% to 15%. The optimal dosage of FA and SS also varied with the lime content adopted. For the 6% lime content, a FA/SS ratio of 1:1 was found to be optimal, whereas for the 8% lime content, a FA/SS ratio of 3:1 was found to develop the maximum strength. The amendment of lime stabilization with FA/SS clearly brought about the difference in lime stabilization stages, unseen when only lime was adopted as stabilizer.

show abstract

Utjecaj fosfogipsa na čvrstoću ekspanzivnog tla stabiliziranog vapnom

Cited by 12 publications

References 44 publications

Select geotechnical properties of a lime stabilized expansive soil amended with bagasse ash and coconut shell powder

Select geotechnical properties of a lime stabilized expansive soil amended with bagasse ash and coconut shell powder

Strength and microstructure of micro ceramic dust admixed lime stabilized soil

Pozzolanic benefit of fly ash and steel slag blends in the development of uniaxial compressive strength of lime stabilized soil

Contact Info

Product

Resources

About