Buchheit et al 1993a - Revision history

Scipediacontent at 17:53, 25 January 2021

2021-01-25T17:53:40Z

Scipediacontent at 10:49, 22 January 2021

2021-01-22T10:49:47Z

Scipediacontent: Scipediacontent moved page Draft Content 622043901 to Buchheit et al 1993a

2020-10-26T09:07:30Z

Scipediacontent moved page Draft Content 622043901 to Buchheit et al 1993a

Scipediacontent: Created page with " == Abstract == Centrifugally-cast concrete liners applied to the interiors of plain steel pipe sections were tested for corrosion performance in brine solutions. An American..."

2020-10-26T09:07:27Z

Created page with " == Abstract == Centrifugally-cast concrete liners applied to the interiors of plain steel pipe sections were tested for corrosion performance in brine solutions. An American..."

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== Abstract ==

Centrifugally-cast concrete liners applied to the interiors of plain steel pipe sections were tested for corrosion performance in brine solutions. An American Petroleum Institute (API) standard concrete, with and without additions of a styrene-butadiene copolymer latex, was subjected to simulated service and laboratory tests. Simulated service tests used a mechanically pumped test manifold containing sections of concrete-lined pipe. Linear polarization probes embedded at steel-concrete interfaces tracked corrosion rates of these samples as a function of exposure time. Laboratory tests used electrochemical impedance spectroscopy to study corrosion occurring at the steel-concrete interfaces. Electron probe microanalysis (EPMA) determined ingress and distribution of damaging species, such as Cl, in concrete liners periodically returned from the field. Observations of concrete-liner fabrication indicate that latex loading levels were difficult to control in the centrifugal-casting process. Overall, test results indicate that latex additions do not impart significant improvements to the performance of centrifugally cast liners and may even be detrimental. Corrosion at steel-concrete interfaces appears to be localized and the area fraction of corroding interfaces can be greater in latex-modified concretes than in API baseline material. EPMA shows higher interfacial Cl concentration in the latex-modified concretes than in the API standard due to rapid brine transportmoreÂ Â» through cracks to the steel surface.Â«Â le

Document type: Report

== Full document ==
<pdf>Media:Draft_Content_622043901-beopen121-9952-document.pdf</pdf>

== Original document ==

The different versions of the original document can be found in:

* [http://dx.doi.org/10.2172/10165862 http://dx.doi.org/10.2172/10165862]

* [https://digital.library.unt.edu/ark:/67531/metadc1340396/m2/1/high_res_d/10165862.pdf https://digital.library.unt.edu/ark:/67531/metadc1340396/m2/1/high_res_d/10165862.pdf]

* [https://trid.trb.org/view.aspx?id=532698 https://trid.trb.org/view.aspx?id=532698],[https://academic.microsoft.com/#/detail/1577167433 https://academic.microsoft.com/#/detail/1577167433]

← Older revision		Revision as of 17:53, 25 January 2021
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	== Abstract ==		== Abstract ==

−	Centrifugally-cast concrete liners applied to the interiors of plain steel pipe sections were tested for corrosion performance in brine solutions. An American Petroleum Institute (API) standard concrete, with and without additions of a styrene-butadiene copolymer latex, was subjected to simulated service and laboratory tests. Simulated service tests used a mechanically pumped test manifold containing sections of concrete-lined pipe. Linear polarization probes embedded at steel-concrete interfaces tracked corrosion rates of these samples as a function of exposure time. Laboratory tests used electrochemical impedance spectroscopy to study corrosion occurring at the steel-concrete interfaces. Electron probe microanalysis (EPMA) determined ingress and distribution of damaging species, such as Cl, in concrete liners periodically returned from the field. Observations of concrete-liner fabrication indicate that latex loading levels were difficult to control in the centrifugal-casting process. Overall, test results indicate that latex additions do not impart significant improvements to the performance of centrifugally cast liners and may even be detrimental. Corrosion at steel-concrete interfaces appears to be localized and the area fraction of corroding interfaces can be greater in latex-modified concretes than in API baseline material. EPMA shows higher interfacial Cl concentration in the latex-modified concretes than in the API standard due to rapid brine ~~transportmoreÂ Â»~~ through cracks to the steel surface.~~Â«Â le~~	+	Centrifugally-cast concrete liners applied to the interiors of plain steel pipe sections were tested for corrosion performance in brine solutions. An American Petroleum Institute (API) standard concrete, with and without additions of a styrene-butadiene copolymer latex, was subjected to simulated service and laboratory tests. Simulated service tests used a mechanically pumped test manifold containing sections of concrete-lined pipe. Linear polarization probes embedded at steel-concrete interfaces tracked corrosion rates of these samples as a function of exposure time. Laboratory tests used electrochemical impedance spectroscopy to study corrosion occurring at the steel-concrete interfaces. Electron probe microanalysis (EPMA) determined ingress and distribution of damaging species, such as Cl, in concrete liners periodically returned from the field. Observations of concrete-liner fabrication indicate that latex loading levels were difficult to control in the centrifugal-casting process. Overall, test results indicate that latex additions do not impart significant improvements to the performance of centrifugally cast liners and may even be detrimental. Corrosion at steel-concrete interfaces appears to be localized and the area fraction of corroding interfaces can be greater in latex-modified concretes than in API baseline material. EPMA shows higher interfacial Cl concentration in the latex-modified concretes than in the API standard due to rapid brine transportmore » through cracks to the steel surface.« le

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 Centrifugally-cast concrete liners applied to the interiors of plain steel pipe sections were tested for corrosion performance in brine solutions. An American Petroleum Institute (API) standard concrete, with and without additions of a styrene-butadiene copolymer latex, was subjected to simulated service and laboratory tests. Simulated service tests used a mechanically pumped test manifold containing sections of concrete-lined pipe. Linear polarization probes embedded at steel-concrete interfaces tracked corrosion rates of these samples as a function of exposure time. Laboratory tests used electrochemical impedance spectroscopy to study corrosion occurring at the steel-concrete interfaces. Electron probe microanalysis (EPMA) determined ingress and distribution of damaging species, such as Cl, in concrete liners periodically returned from the field. Observations of concrete-liner fabrication indicate that latex loading levels were difficult to control in the centrifugal-casting process. Overall, test results indicate that latex additions do not impart significant improvements to the performance of centrifugally cast liners and may even be detrimental. Corrosion at steel-concrete interfaces appears to be localized and the area fraction of corroding interfaces can be greater in latex-modified concretes than in API baseline material. EPMA shows higher interfacial Cl concentration in the latex-modified concretes than in the API standard due to rapid brine transportmoreÂ Â» through cracks to the steel surface.Â«Â le
@@ Line 18: / Line 13: @@
 * [https://digital.library.unt.edu/ark:/67531/metadc1340396/m2/1/high_res_d/10165862.pdf https://digital.library.unt.edu/ark:/67531/metadc1340396/m2/1/high_res_d/10165862.pdf]
-* [https://trid.trb.org/view.aspx?id=532698 https://trid.trb.org/view.aspx?id=532698],[https://academic.microsoft.com/#/detail/1577167433 https://academic.microsoft.com/#/detail/1577167433]
+* [https://www.osti.gov/servlets/purl/10165862 https://www.osti.gov/servlets/purl/10165862],

← Older revision	Revision as of 09:07, 26 October 2020
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