Experimental study on the engineering properties of expansive soil treated with Al13

Abstract This paper investigates the stabilization of expansive soil with hydroxy-aluminium (Al13) with Al/soil ratios of 0.10, 0.14, 0.18, 0.22 and 0.26 mmol/g. A series of laboratory tests were conducted to study the effects of Al13 on the mechanical properties of expansive soil, including Atterbe...

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Autores principales:	Jianbo She, Zheng Lu, Yahui Duan, Hailin Yao, Liang Liu
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2020
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/10428e3348534b87a1874b5f305f7e62
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spelling	oai:doaj.org-article:10428e3348534b87a1874b5f305f7e622021-12-02T16:45:40ZExperimental study on the engineering properties of expansive soil treated with Al1310.1038/s41598-020-70947-62045-2322https://doaj.org/article/10428e3348534b87a1874b5f305f7e622020-08-01T00:00:00Zhttps://doi.org/10.1038/s41598-020-70947-6https://doaj.org/toc/2045-2322Abstract This paper investigates the stabilization of expansive soil with hydroxy-aluminium (Al13) with Al/soil ratios of 0.10, 0.14, 0.18, 0.22 and 0.26 mmol/g. A series of laboratory tests were conducted to study the effects of Al13 on the mechanical properties of expansive soil, including Atterberg limits, grain size distribution, swell percent, swell pressure and unconsolidated-undrained (UU) triaxial strength. The results revealed that Al13 reduced the plasticity index, clay content and swelling potential and enhanced the shear strength of expansive soil. The minerals and micro-structural changes in the soil samples were also determined by X-ray diffraction (XRD) and scanning electron microscopy (SEM), and the stabilized soil showed a remarkable flocculated-agglomerated structure characterized by the densification of particle associations. The consistency of the changes in mechanical properties and micro-morphology indicated that expansive soil can be effectively improved with the use of Al13. Additionally, the optimum dosage of polynuclear hydroxy-Al (PHA) solution for stabilizing expansive soil was 0.18 mmol/g under the given properties of expansive soil and PHA utilized in this study.Jianbo SheZheng LuYahui DuanHailin YaoLiang LiuNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 10, Iss 1, Pp 1-9 (2020)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Jianbo She Zheng Lu Yahui Duan Hailin Yao Liang Liu Experimental study on the engineering properties of expansive soil treated with Al13
description	Abstract This paper investigates the stabilization of expansive soil with hydroxy-aluminium (Al13) with Al/soil ratios of 0.10, 0.14, 0.18, 0.22 and 0.26 mmol/g. A series of laboratory tests were conducted to study the effects of Al13 on the mechanical properties of expansive soil, including Atterberg limits, grain size distribution, swell percent, swell pressure and unconsolidated-undrained (UU) triaxial strength. The results revealed that Al13 reduced the plasticity index, clay content and swelling potential and enhanced the shear strength of expansive soil. The minerals and micro-structural changes in the soil samples were also determined by X-ray diffraction (XRD) and scanning electron microscopy (SEM), and the stabilized soil showed a remarkable flocculated-agglomerated structure characterized by the densification of particle associations. The consistency of the changes in mechanical properties and micro-morphology indicated that expansive soil can be effectively improved with the use of Al13. Additionally, the optimum dosage of polynuclear hydroxy-Al (PHA) solution for stabilizing expansive soil was 0.18 mmol/g under the given properties of expansive soil and PHA utilized in this study.
format	article
author	Jianbo She Zheng Lu Yahui Duan Hailin Yao Liang Liu
author_facet	Jianbo She Zheng Lu Yahui Duan Hailin Yao Liang Liu
author_sort	Jianbo She
title	Experimental study on the engineering properties of expansive soil treated with Al13
title_short	Experimental study on the engineering properties of expansive soil treated with Al13
title_full	Experimental study on the engineering properties of expansive soil treated with Al13
title_fullStr	Experimental study on the engineering properties of expansive soil treated with Al13
title_full_unstemmed	Experimental study on the engineering properties of expansive soil treated with Al13
title_sort	experimental study on the engineering properties of expansive soil treated with al13
publisher	Nature Portfolio
publishDate	2020
url	https://doaj.org/article/10428e3348534b87a1874b5f305f7e62
work_keys_str_mv	AT jianboshe experimentalstudyontheengineeringpropertiesofexpansivesoiltreatedwithal13 AT zhenglu experimentalstudyontheengineeringpropertiesofexpansivesoiltreatedwithal13 AT yahuiduan experimentalstudyontheengineeringpropertiesofexpansivesoiltreatedwithal13 AT hailinyao experimentalstudyontheengineeringpropertiesofexpansivesoiltreatedwithal13 AT liangliu experimentalstudyontheengineeringpropertiesofexpansivesoiltreatedwithal13
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Experimental study on the engineering properties of expansive soil treated with Al13

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