Corrosivity Level of Soils at Distinct Areas Where Pipeline Steel is Buried for Water Distribution, South-Africa

Khotso Khoele; Bongani Baloyi; Peter Apata Olubambi

doi:10.1007/s11668-016-0145-7

Corrosivity Level of Soils at Distinct Areas Where Pipeline Steel is Buried for Water Distribution, South-Africa

Khotso Khoele, Bongani Baloyi, Peter Apata Olubambi

Metallurgy

Tshwane University of Technology

Research output: Contribution to journal › Article › peer-review

1 Citation (Scopus)

Abstract

An engagement of different soil characterization techniques including ion chromatography, inductively coupled plasma, scanning electron microscopy, and X-ray diffraction (XRD) has been utilized to study nature of the soils from seven locations where corrosion previously occurred on buried pipeline steels. Moisture contents from engaged samples were below 20%, and the organic matter contents were negligible. The least resistivity was observed on soil sample (SS) 4. The energy-dispersive X-ray analysis showed notable amount of chloride in SS 4, while the XRD analysis revealed the formation of complex phases comprised goethite and hematite from SS 4. The overall view regarding corrosivity went in this order: SS 4, SS 1, SS 5, SS 7, SS 6, and SS 2. The recommended cathodic protection for soils was between −850 and −950 mV Cu/CuSO₄.

Original language	English
Pages (from-to)	761-769
Number of pages	9
Journal	Journal of Failure Analysis and Prevention
Volume	16
Issue number	5
DOIs	https://doi.org/10.1007/s11668-016-0145-7
Publication status	Published - 1 Oct 2016

Keywords

Corrosion
Environment
Low-carbon steel
Pipelines
Soil

ASJC Scopus subject areas

General Materials Science
Safety, Risk, Reliability and Quality
Mechanics of Materials
Mechanical Engineering

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10.1007/s11668-016-0145-7

Cite this

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title = "Corrosivity Level of Soils at Distinct Areas Where Pipeline Steel is Buried for Water Distribution, South-Africa",

abstract = "An engagement of different soil characterization techniques including ion chromatography, inductively coupled plasma, scanning electron microscopy, and X-ray diffraction (XRD) has been utilized to study nature of the soils from seven locations where corrosion previously occurred on buried pipeline steels. Moisture contents from engaged samples were below 20%, and the organic matter contents were negligible. The least resistivity was observed on soil sample (SS) 4. The energy-dispersive X-ray analysis showed notable amount of chloride in SS 4, while the XRD analysis revealed the formation of complex phases comprised goethite and hematite from SS 4. The overall view regarding corrosivity went in this order: SS 4, SS 1, SS 5, SS 7, SS 6, and SS 2. The recommended cathodic protection for soils was between −850 and −950 mV Cu/CuSO4.",

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AU - Olubambi, Peter Apata

PY - 2016/10/1

Y1 - 2016/10/1

N2 - An engagement of different soil characterization techniques including ion chromatography, inductively coupled plasma, scanning electron microscopy, and X-ray diffraction (XRD) has been utilized to study nature of the soils from seven locations where corrosion previously occurred on buried pipeline steels. Moisture contents from engaged samples were below 20%, and the organic matter contents were negligible. The least resistivity was observed on soil sample (SS) 4. The energy-dispersive X-ray analysis showed notable amount of chloride in SS 4, while the XRD analysis revealed the formation of complex phases comprised goethite and hematite from SS 4. The overall view regarding corrosivity went in this order: SS 4, SS 1, SS 5, SS 7, SS 6, and SS 2. The recommended cathodic protection for soils was between −850 and −950 mV Cu/CuSO4.

AB - An engagement of different soil characterization techniques including ion chromatography, inductively coupled plasma, scanning electron microscopy, and X-ray diffraction (XRD) has been utilized to study nature of the soils from seven locations where corrosion previously occurred on buried pipeline steels. Moisture contents from engaged samples were below 20%, and the organic matter contents were negligible. The least resistivity was observed on soil sample (SS) 4. The energy-dispersive X-ray analysis showed notable amount of chloride in SS 4, while the XRD analysis revealed the formation of complex phases comprised goethite and hematite from SS 4. The overall view regarding corrosivity went in this order: SS 4, SS 1, SS 5, SS 7, SS 6, and SS 2. The recommended cathodic protection for soils was between −850 and −950 mV Cu/CuSO4.

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KW - Environment

KW - Low-carbon steel

KW - Pipelines

KW - Soil

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Corrosivity Level of Soils at Distinct Areas Where Pipeline Steel is Buried for Water Distribution, South-Africa

Abstract

Keywords

ASJC Scopus subject areas

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