Performance of carbon nanofiber-cement composites subjected to accelerated decalcification

L. Brown; F. Sanchez; D. Kosson; J. Arnold

doi:10.1051/epjconf/20135602005

Performance of carbon nanofiber-cement composites subjected to accelerated decalcification

L. Brown, F. Sanchez, D. Kosson, J. Arnold

Emerging Technologies, AI & Computing

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

Abstract

The effect of decalcification on the chemo-mechanical behavior of carbon nanofiber (CNF)-cement composites was studied. Portland cement pastes with and without 0.2% CNFs were subjected to accelerated decalcification by exposure to ammonium nitrate solutions. The influence of microstructural alterations during decalcification on the physical and mechanical properties of the composites was examined. The presence of CNF agglomerates influenced the chemo-mechanical behavior of the composite during decalcification. Precipitation of secondary hydrates within the agglomerates during decalcification resulted in a decrease in local porosity, which strengthened the composite and slowed the loss of flexural strength.

Original language	English
Title of host publication	International Workshop NUCPERF 2012
Subtitle of host publication	Long-Term Performance of Cementitious Barriers and Reinforced Concrete in Nuclear Power Plant and Radioactive Waste Storage and Disposal
DOIs	https://doi.org/10.1051/epjconf/20135602005
State	Published - 2013
Event	3rd International Workshop on Long-Term Performance of Cementitious Barriers and Reinforced Concrete in Nuclear Power Plant and Radioactive Waste Storage and Disposal, NUCPERF 2012 - Cadarache, France Duration: Nov 12 2012 → Nov 15 2012

Publication series

Name	EPJ Web of Conferences
Volume	56
ISSN (Print)	2101-6275
ISSN (Electronic)	2100-014X

Conference

Conference	3rd International Workshop on Long-Term Performance of Cementitious Barriers and Reinforced Concrete in Nuclear Power Plant and Radioactive Waste Storage and Disposal, NUCPERF 2012
Country/Territory	France
City	Cadarache
Period	11/12/12 → 11/15/12

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10.1051/epjconf/20135602005

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Brown, L., Sanchez, F., Kosson, D., & Arnold, J. (2013). Performance of carbon nanofiber-cement composites subjected to accelerated decalcification. In International Workshop NUCPERF 2012: Long-Term Performance of Cementitious Barriers and Reinforced Concrete in Nuclear Power Plant and Radioactive Waste Storage and Disposal Article 02005 (EPJ Web of Conferences; Vol. 56). https://doi.org/10.1051/epjconf/20135602005

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title = "Performance of carbon nanofiber-cement composites subjected to accelerated decalcification",

abstract = "The effect of decalcification on the chemo-mechanical behavior of carbon nanofiber (CNF)-cement composites was studied. Portland cement pastes with and without 0.2% CNFs were subjected to accelerated decalcification by exposure to ammonium nitrate solutions. The influence of microstructural alterations during decalcification on the physical and mechanical properties of the composites was examined. The presence of CNF agglomerates influenced the chemo-mechanical behavior of the composite during decalcification. Precipitation of secondary hydrates within the agglomerates during decalcification resulted in a decrease in local porosity, which strengthened the composite and slowed the loss of flexural strength.",

author = "L. Brown and F. Sanchez and D. Kosson and J. Arnold",

year = "2013",

doi = "10.1051/epjconf/20135602005",

language = "English",

isbn = "9782759810468",

series = "EPJ Web of Conferences",

booktitle = "International Workshop NUCPERF 2012",

note = "3rd International Workshop on Long-Term Performance of Cementitious Barriers and Reinforced Concrete in Nuclear Power Plant and Radioactive Waste Storage and Disposal, NUCPERF 2012 ; Conference date: 12-11-2012 Through 15-11-2012",

}

Brown, L, Sanchez, F, Kosson, D & Arnold, J 2013, Performance of carbon nanofiber-cement composites subjected to accelerated decalcification. in International Workshop NUCPERF 2012: Long-Term Performance of Cementitious Barriers and Reinforced Concrete in Nuclear Power Plant and Radioactive Waste Storage and Disposal., 02005, EPJ Web of Conferences, vol. 56, 3rd International Workshop on Long-Term Performance of Cementitious Barriers and Reinforced Concrete in Nuclear Power Plant and Radioactive Waste Storage and Disposal, NUCPERF 2012, Cadarache, France, 11/12/12. https://doi.org/10.1051/epjconf/20135602005

Performance of carbon nanofiber-cement composites subjected to accelerated decalcification. / Brown, L.; Sanchez, F.; Kosson, D. et al.
International Workshop NUCPERF 2012: Long-Term Performance of Cementitious Barriers and Reinforced Concrete in Nuclear Power Plant and Radioactive Waste Storage and Disposal. 2013. 02005 (EPJ Web of Conferences; Vol. 56).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

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T1 - Performance of carbon nanofiber-cement composites subjected to accelerated decalcification

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AU - Sanchez, F.

AU - Kosson, D.

AU - Arnold, J.

PY - 2013

Y1 - 2013

N2 - The effect of decalcification on the chemo-mechanical behavior of carbon nanofiber (CNF)-cement composites was studied. Portland cement pastes with and without 0.2% CNFs were subjected to accelerated decalcification by exposure to ammonium nitrate solutions. The influence of microstructural alterations during decalcification on the physical and mechanical properties of the composites was examined. The presence of CNF agglomerates influenced the chemo-mechanical behavior of the composite during decalcification. Precipitation of secondary hydrates within the agglomerates during decalcification resulted in a decrease in local porosity, which strengthened the composite and slowed the loss of flexural strength.

AB - The effect of decalcification on the chemo-mechanical behavior of carbon nanofiber (CNF)-cement composites was studied. Portland cement pastes with and without 0.2% CNFs were subjected to accelerated decalcification by exposure to ammonium nitrate solutions. The influence of microstructural alterations during decalcification on the physical and mechanical properties of the composites was examined. The presence of CNF agglomerates influenced the chemo-mechanical behavior of the composite during decalcification. Precipitation of secondary hydrates within the agglomerates during decalcification resulted in a decrease in local porosity, which strengthened the composite and slowed the loss of flexural strength.

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DO - 10.1051/epjconf/20135602005

M3 - Conference contribution

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SN - 9782759810468

T3 - EPJ Web of Conferences

BT - International Workshop NUCPERF 2012

T2 - 3rd International Workshop on Long-Term Performance of Cementitious Barriers and Reinforced Concrete in Nuclear Power Plant and Radioactive Waste Storage and Disposal, NUCPERF 2012

Y2 - 12 November 2012 through 15 November 2012

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Brown L, Sanchez F, Kosson D, Arnold J. Performance of carbon nanofiber-cement composites subjected to accelerated decalcification. In International Workshop NUCPERF 2012: Long-Term Performance of Cementitious Barriers and Reinforced Concrete in Nuclear Power Plant and Radioactive Waste Storage and Disposal. 2013. 02005. (EPJ Web of Conferences). doi: 10.1051/epjconf/20135602005

Performance of carbon nanofiber-cement composites subjected to accelerated decalcification

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