Bituminos Insulations Durability of Underground Metallic Pipelines II. Laboratory study on the aging of bituminous material

Lingvay, Iosif; Radu, Elena; Caramitu, Alina; Patroi, Delia; Oprina, Gabriela; Radermacher, Ladislau; Mitrea, Sorina

Iosif Lingvay, Elena Radu, Alina Caramitu, Delia Patroi, Gabriela Oprina, Ladislau Radermacher, Sorina Mitrea

Bituminos Insulations Durability of Underground Metallic Pipelines II. Laboratory study on the aging of bituminous material

Abstract:

The structural and physicochemical changes that lead to the aging of the bituminous insulation of underground metallic pipelines were determined through various investigations (XRD, dielectric spectroscopy and thermal analysis - coupled techniques TG + DTA + DTG). The resistance to moulds of the bituminous insulation was evaluated by using specific microbiological methods and the dominant microbiological species found in the soil where the investigated bituminous material was exposed for 19 years were identified. The measurements carried out on samples taken from site showed that the bituminous material used in the anti-corrosive isolation of steel pipes has a very low resistance to microorganisms; thus, the dielectric qualities of bitumen deteriorate substantially (tgä increases 3-4 times). The exposure of the bituminous insulation to different climatic conditions and to solar radiation (UV-IR) leads to a decrease in the dielectric losses in the insulation and to an increase in crystallinity and thermo oxidative reactivity of bitumen, thus leading to a significant decrease in the material’s resistance to the action of fungi.

Keywords:
underground pipelines; corrosion; bituminous insulation; insulation aging; microbiological deterioration; moulds

Issue: 2017, Volume 68, Issue 4

Pages: 646-651

Publication date: 2017/5/15

https://doi.org/10.37358/RC.17.4.5523

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This article is published under the Creative Commons Attribution 4.0 International License

Citation Styles

Cite this article as:
LINGVAY, I., RADU, E., CARAMITU, A., PATROI, D., OPRINA, G., RADERMACHER, L., MITREA, S., Bituminos Insulations Durability of Underground Metallic Pipelines II. Laboratory study on the aging of bituminous material, Rev. Chim., 68(4), 2017, 646-651.

Vancouver
Lingvay I, Radu E, Caramitu A, Patroi D, Oprina G, Radermacher L, Mitrea S. Bituminos Insulations Durability of Underground Metallic Pipelines II. Laboratory study on the aging of bituminous material. Rev. Chim.[internet]. 2017 Apr;68(4):646-651. Available from: https://doi.org/10.37358/RC.17.4.5523

APA 6th edition
Lingvay, I., Radu, E., Caramitu, A., Patroi, D., Oprina, G., Radermacher, L. & Mitrea, S. (2017). Bituminos Insulations Durability of Underground Metallic Pipelines II. Laboratory study on the aging of bituminous material. Revista de Chimie, 68(4), 646-651. https://doi.org/10.37358/RC.17.4.5523

Harvard
Lingvay, I., Radu, E., Caramitu, A., Patroi, D., Oprina, G., Radermacher, L., Mitrea, S. (2017). 'Bituminos Insulations Durability of Underground Metallic Pipelines II. Laboratory study on the aging of bituminous material', Revista de Chimie, 68(4), pp. 646-651. https://doi.org/10.37358/RC.17.4.5523

IEEE
I. Lingvay, E. Radu, A. Caramitu, D. Patroi, G. Oprina, L. Radermacher, S. Mitrea, "Bituminos Insulations Durability of Underground Metallic Pipelines II. Laboratory study on the aging of bituminous material". Revista de Chimie, vol. 68, no. 4, pp. 646-651, 2017. [online]. https://doi.org/10.37358/RC.17.4.5523

Text
Iosif Lingvay, Elena Radu, Alina Caramitu, Delia Patroi, Gabriela Oprina, Ladislau Radermacher, Sorina Mitrea,
Bituminos Insulations Durability of Underground Metallic Pipelines II. Laboratory study on the aging of bituminous material,
Revista de Chimie,
Volume 68, Issue 4,
2017,
Pages 646-651,
ISSN 2668-8212,
https://doi.org/10.37358/RC.17.4.5523.
(https://revistadechimie.ro/Articles.asp?ID=5523)
Keywords: underground pipelines; corrosion; bituminous insulation; insulation aging; microbiological deterioration; moulds

RIS
TY - JOUR
T1 - Bituminos Insulations Durability of Underground Metallic Pipelines II. Laboratory study on the aging of bituminous material
A1 - Lingvay, Iosif
A2 - Radu, Elena
A3 - Caramitu, Alina
A4 - Patroi, Delia
A5 - Oprina, Gabriela
A6 - Radermacher, Ladislau
A7 - Mitrea, Sorina
JF - Revista de Chimie
JO - Rev. Chim.
PB - Revista de Chimie SRL
SN - 2668-8212
Y1 - 2017
VL - 68
IS - 4
SP - 646
EP - 651
UR - https://doi.org/10.37358/RC.17.4.5523
KW - underground pipelines
KW - corrosion
KW - bituminous insulation
KW - insulation aging
KW - microbiological deterioration
KW - moulds
ER -

BibTex
@article{RevCh2017P646,
author = {Lingvay Iosif and Radu Elena and Caramitu Alina and Patroi Delia and Oprina Gabriela and Radermacher Ladislau and Mitrea Sorina},
title = {Bituminos Insulations Durability of Underground Metallic Pipelines II. Laboratory study on the aging of bituminous material},
journal = {Revista de Chimie},
volume = {68},
number = {4},
pages = {646-651},
year = {2017},
issn = {2668-8212},
doi = {https://doi.org/10.37358/RC.17.4.5523},
url = {https://revistadechimie.ro/Articles.asp?ID=5523}
}

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