Strength and Swell Performance of High-Sulphate Kaolinite Clay Soil

Expansion of soils has been found to produce significant negative economic and environmental impact on various civil engineering infrastructure. This impact is more deleterious in soils containing sulphates, when treated with calcium-based stabilizers such as Lime and/or Portland cement (PC). The re...
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Autor*in:	Blessing Adeleke [verfasserIn] John Kinuthia [verfasserIn] Jonathan Oti [verfasserIn]

Format:	E-Artikel
Sprache:	Englisch

Erschienen:	2020

Schlagwörter:	sulphate bearing soil soil stabilization Kaolinite clay optimum sulphate content mechanical strength swell behaviour

Übergeordnetes Werk:	In: Sustainability - MDPI AG, 2009, 12(2020), 23, p 10164
Übergeordnetes Werk:	volume:12 ; year:2020 ; number:23, p 10164

Links:	Link aufrufen Link aufrufen Link aufrufen Journal toc

DOI / URN:	10.3390/su122310164

Katalog-ID:	DOAJ086998099

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callnumber-first	T - Technology
author	Blessing Adeleke
spellingShingle	Blessing Adeleke misc TD194-195 misc TJ807-830 misc GE1-350 misc sulphate bearing soil misc soil stabilization misc Kaolinite clay misc optimum sulphate content misc mechanical strength misc swell behaviour misc Environmental effects of industries and plants misc Renewable energy sources misc Environmental sciences Strength and Swell Performance of High-Sulphate Kaolinite Clay Soil
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topic_title	TD194-195 TJ807-830 GE1-350 Strength and Swell Performance of High-Sulphate Kaolinite Clay Soil sulphate bearing soil soil stabilization Kaolinite clay optimum sulphate content mechanical strength swell behaviour
topic	misc TD194-195 misc TJ807-830 misc GE1-350 misc sulphate bearing soil misc soil stabilization misc Kaolinite clay misc optimum sulphate content misc mechanical strength misc swell behaviour misc Environmental effects of industries and plants misc Renewable energy sources misc Environmental sciences
topic_unstemmed	misc TD194-195 misc TJ807-830 misc GE1-350 misc sulphate bearing soil misc soil stabilization misc Kaolinite clay misc optimum sulphate content misc mechanical strength misc swell behaviour misc Environmental effects of industries and plants misc Renewable energy sources misc Environmental sciences
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title	Strength and Swell Performance of High-Sulphate Kaolinite Clay Soil
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title_full	Strength and Swell Performance of High-Sulphate Kaolinite Clay Soil
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title_sort	strength and swell performance of high-sulphate kaolinite clay soil
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title_auth	Strength and Swell Performance of High-Sulphate Kaolinite Clay Soil
abstract	Expansion of soils has been found to produce significant negative economic and environmental impact on various civil engineering infrastructure. This impact is more deleterious in soils containing sulphates, when treated with calcium-based stabilizers such as Lime and/or Portland cement (PC). The reported study investigated the strength and swell characteristics of Kaolinite clay artificially induced with high levels of Gypsum (sulphate) contents after stabilization with CEM I (PC), which is a calcium-based stabilizer. An optimum stabilizer content/Gypsum dosage, aimed at investigating the maximum magnitude of expansion possible using high levels of 10, 15 and 20% Gypsum contents (4.7, 7 and 9.3 wt.% sulphate) stabilized with calcium-based content of 7, 8, 9 and 10 wt.%. This was expected to provide further understanding on the mechanisms behind high sulphate-bearing clay soils, and the impact of sulphate and calcium content on strength and swell characteristics. The research outcomes showed that the introduction of sulphate to a Kaolinite clay soil reduces the compressive strength of the stabilised product by a factor range of 6–47% at 28 days curing age, while the swell behaviour is mainly dependent on both the sulphate content and curing age. Furthermore, the observed result suggests an 8 wt.% binder content to produce maximum magnitude of expansion (swell) with a high Gypsum content of 10% by weight. This finding is of economic importance, as it is expected to serve as a benchmark for further research on the stabilized clay systems, at high sulphate levels using sustainable binder materials.
abstractGer	Expansion of soils has been found to produce significant negative economic and environmental impact on various civil engineering infrastructure. This impact is more deleterious in soils containing sulphates, when treated with calcium-based stabilizers such as Lime and/or Portland cement (PC). The reported study investigated the strength and swell characteristics of Kaolinite clay artificially induced with high levels of Gypsum (sulphate) contents after stabilization with CEM I (PC), which is a calcium-based stabilizer. An optimum stabilizer content/Gypsum dosage, aimed at investigating the maximum magnitude of expansion possible using high levels of 10, 15 and 20% Gypsum contents (4.7, 7 and 9.3 wt.% sulphate) stabilized with calcium-based content of 7, 8, 9 and 10 wt.%. This was expected to provide further understanding on the mechanisms behind high sulphate-bearing clay soils, and the impact of sulphate and calcium content on strength and swell characteristics. The research outcomes showed that the introduction of sulphate to a Kaolinite clay soil reduces the compressive strength of the stabilised product by a factor range of 6–47% at 28 days curing age, while the swell behaviour is mainly dependent on both the sulphate content and curing age. Furthermore, the observed result suggests an 8 wt.% binder content to produce maximum magnitude of expansion (swell) with a high Gypsum content of 10% by weight. This finding is of economic importance, as it is expected to serve as a benchmark for further research on the stabilized clay systems, at high sulphate levels using sustainable binder materials.
abstract_unstemmed	Expansion of soils has been found to produce significant negative economic and environmental impact on various civil engineering infrastructure. This impact is more deleterious in soils containing sulphates, when treated with calcium-based stabilizers such as Lime and/or Portland cement (PC). The reported study investigated the strength and swell characteristics of Kaolinite clay artificially induced with high levels of Gypsum (sulphate) contents after stabilization with CEM I (PC), which is a calcium-based stabilizer. An optimum stabilizer content/Gypsum dosage, aimed at investigating the maximum magnitude of expansion possible using high levels of 10, 15 and 20% Gypsum contents (4.7, 7 and 9.3 wt.% sulphate) stabilized with calcium-based content of 7, 8, 9 and 10 wt.%. This was expected to provide further understanding on the mechanisms behind high sulphate-bearing clay soils, and the impact of sulphate and calcium content on strength and swell characteristics. The research outcomes showed that the introduction of sulphate to a Kaolinite clay soil reduces the compressive strength of the stabilised product by a factor range of 6–47% at 28 days curing age, while the swell behaviour is mainly dependent on both the sulphate content and curing age. Furthermore, the observed result suggests an 8 wt.% binder content to produce maximum magnitude of expansion (swell) with a high Gypsum content of 10% by weight. This finding is of economic importance, as it is expected to serve as a benchmark for further research on the stabilized clay systems, at high sulphate levels using sustainable binder materials.
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title_short	Strength and Swell Performance of High-Sulphate Kaolinite Clay Soil
url	https://doi.org/10.3390/su122310164 https://doaj.org/article/415b289b00f448cf92238e3c2268f794 https://www.mdpi.com/2071-1050/12/23/10164 https://doaj.org/toc/2071-1050
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Strength and Swell Performance of High-Sulphate Kaolinite Clay Soil

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