Behaviour of Lime Treated Cured Expansive Soil Composites

Bhuvaneshwari, S.; Robinson, R. G.; Gandhi, S. R.

doi:10.1007/s40098-013-0081-3

Cited by 63 publications

(46 citation statements)

References 15 publications

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“…Expansive soils have the tendency to undergo volume change behaviour and cause large uplift pressures and upheaval of structures built on them (Bhuvaneshwari, Robinson, & Gandhi, 2013). The enormous volume change is due to the presence of montmorillonite group of minerals (Sridharan & Prakash, 2000).…”

Section: Introductionmentioning

confidence: 99%

“…They are characterized by high cation exchange capacity (Celik & Nalbantoglu, 2013), small particle size (Fityus & Buzzi, 2009) and large specific area (Nalbantoğlu, 2004). This volume change behaviour of expansive soils results in damage to structures constructed on them (Al-Mukhtar, Lasledj, & Alcover, 2010b;Al-Rawas, Taha, Nelson, Al-Shab, & Al-Siyabi, 2002;Bhuvaneshwari et al, 2013;Celik & Nalbantoglu, 2013). Such soils need to be stabilized to improve their properties for safe and stable construction on them.…”

Section: Introductionmentioning

confidence: 99%

“…Such soils need to be stabilized to improve their properties for safe and stable construction on them. Lime stabilization has been the most widely used method for stabilization of expansive soils (AlMukhtar, Khattab, & Alcover, 2012;Bhuvaneshwari et al, 2013;Thyagaraj, Rao, Sai Suresh, & Salini, 2012). Stabilizing expansive soil by the addition of lime is an ancient art and an age-old practice, which has been followed all over the world.…”

Section: Introductionmentioning

confidence: 99%

“…Stabilizing expansive soil by the addition of lime is an ancient art and an age-old practice, which has been followed all over the world. Lime is an effective stabilizing agent for soft and expansive soils and can enormously increase the workability and strength while limiting volume changes (Bhuvaneshwari et al, 2013).…”

Section: Introductionmentioning

confidence: 99%

“…Lime is a broad term that is used to refer to the following three types: quicklime (CaO), slaked or hydrated lime (Ca(OH)2) and carbonate lime (CaCO3) (Transport Research Laboratory, 2003). Quicklime and hydrated lime are widely used as stabilizers (Bhuvaneshwari et al, 2013). The addition of quick lime or hydrated lime to clay results in reactions taking place in two stages namely immediate reactions and long-term reactions.…”

Section: Introductionmentioning

confidence: 99%

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Strength and microstructure of micro ceramic dust admixed lime stabilized soil

James¹,

Pandian²

2018

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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...

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Section: Introductionmentioning

confidence: 99%