Strength and microstructure of micro ceramic dust admixed lime stabilized soil

Abstract: 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 a...

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Autores principales:	James,Jijo, Kasinatha Pandian,Pitchai
Lenguaje:	English
Publicado:	Escuela de Construcción Civil, Pontificia Universidad Católica de Chile 2018
Materias:	Expansive soil lime stabilization ceramic dust strength mineralogy microstructure
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-915X2018000100005
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spelling	oai:scielo:S0718-915X20180001000052018-08-22Strength and microstructure of micro ceramic dust admixed lime stabilized soilJames,JijoKasinatha Pandian,Pitchai Expansive soil lime stabilization ceramic dust strength mineralogy microstructure Abstract: 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.info:eu-repo/semantics/openAccessEscuela de Construcción Civil, Pontificia Universidad Católica de ChileRevista de la construcción v.17 n.1 20182018-04-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-915X2018000100005en10.7764/rdlc.17.1.5
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	Expansive soil lime stabilization ceramic dust strength mineralogy microstructure
spellingShingle	Expansive soil lime stabilization ceramic dust strength mineralogy microstructure James,Jijo Kasinatha Pandian,Pitchai Strength and microstructure of micro ceramic dust admixed lime stabilized soil
description	Abstract: 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.
author	James,Jijo Kasinatha Pandian,Pitchai
author_facet	James,Jijo Kasinatha Pandian,Pitchai
author_sort	James,Jijo
title	Strength and microstructure of micro ceramic dust admixed lime stabilized soil
title_short	Strength and microstructure of micro ceramic dust admixed lime stabilized soil
title_full	Strength and microstructure of micro ceramic dust admixed lime stabilized soil
title_fullStr	Strength and microstructure of micro ceramic dust admixed lime stabilized soil
title_full_unstemmed	Strength and microstructure of micro ceramic dust admixed lime stabilized soil
title_sort	strength and microstructure of micro ceramic dust admixed lime stabilized soil
publisher	Escuela de Construcción Civil, Pontificia Universidad Católica de Chile
publishDate	2018
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-915X2018000100005
work_keys_str_mv	AT jamesjijo strengthandmicrostructureofmicroceramicdustadmixedlimestabilizedsoil AT kasinathapandianpitchai strengthandmicrostructureofmicroceramicdustadmixedlimestabilizedsoil
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Strength and microstructure of micro ceramic dust admixed lime stabilized soil

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