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Study on the soil corrosivity towards the buried water supply pipelines in Madhyapur Thimi municipality, Bhaktapur


 
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1. Title Title of document Study on the soil corrosivity towards the buried water supply pipelines in Madhyapur Thimi municipality, Bhaktapur
 
2. Creator Author's name, affiliation, country Kumar P Dahal; Central Department of Chemistry, Tribhuvan University, Kirtipur, Kathmandu; Nepal
 
2. Creator Author's name, affiliation, country Dinesh KC; Central Department of Chemistry, Tribhuvan University, Kirtipur, Kathmandu; Nepal
 
2. Creator Author's name, affiliation, country Jagadeesh Bhattarai; Central Department of Chemistry, Tribhuvan University, Kirtipur, Kathmandu; Nepal
 
3. Subject Discipline(s) Chemistry
 
3. Subject Keyword(s) Chloride & sulfate; Moisture; pH; Resistivity; Oxidation-reduction potential
 
4. Description Abstract

This research work is carried out to identify the corrosive nature of soils towards the buried-galvanized steel and cast iron pipelines buried in Sanothimi areas of Madhyapur Thimi municipality, Bhaktapur based on different soil parameters such as organic content, moisture content, pH, resistivity, oxidation-reduction potential, chloride and sulfate ions. The soil parameters of the collected soil samples from the study areas were analyzed using standard ASTM methods. Concentrations of these soil parameters measured in this study were found as: organic content (0.9- 7.9%), moisture content (8.0-36.7%), pH (6.8-7.7), resistivity (3900-16700 ohm.cm), oxidation-reduction potential (337-461 mV vs SHE), chloride (25-71 ppm) and sulfate (35-464 ppm) contents. These soil parameters gave an indication of “mildly corrosive” to “less corrosive” nature of soils on the galvanized steels and cast iron pipelines buried in the study areas. Based on the findings of the present studies, it can be advised to the related authorities or local people that simple modification of the soils by using cheapest non-conducting materials like gravel or sand around the buried water supply pipelines before undergrounding them in the study areas is very beneficial from the corrosion point of view to increase their life time.

DOI: http://dx.doi.org/10.3126/bibechana.v11i0.10387

BIBECHANA 11(1) (2014) 94-102
 
5. Publisher Organizing agency, location Birat Campus, Biratnagar, Nepal
 
6. Contributor Sponsor(s)
 
7. Date (YYYY-MM-DD) 2014-05-10
 
8. Type Status & genre Peer-Reviewed Article
 
8. Type Type
 
9. Format File format PDF
 
10. Identifier Uniform Resource Identifier https://www.nepjol.info/index.php/BIBECHANA/article/view/10387
 
10. Identifier Digital Object Identifier http://dx.doi.org/10.3126/bibechana.v11i0.10387
 
11. Source Title; vol., no. (year) BIBECHANA; Vol 11 (2014)
 
12. Language English=en en
 
13. Relation Supp. Files
 
14. Coverage Geo-spatial location, chronological period, research sample (gender, age, etc.) Nepal
 
15. Rights Copyright and permissions Copyright (c)