Structural Engineering and Mechanics

  • 제40권5호
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  • Pages.655-663
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  • 2011
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  • 1225-4568(pISSN)
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  • 1598-6217(eISSN)
테크노프레스 (Techno-Press)
권호 표지
DOI QR코드

DOI QR Code

Loss of strength in asbestos-cement water pipes due to leaching

  • Gil, Lluis (Dept. of Strength of Materials and Engineering Structures, Universitat Politecnica de Catalunya, Barcelona Tech., ETSEIAT Campus Terrassa) ;
  • Perez, Marco A. (Dept. of Strength of Materials and Engineering Structures, Universitat Politecnica de Catalunya, Barcelona Tech., ETSEIAT Campus Terrassa) ;
  • Bernat, Ernest (Dept. of Strength of Materials and Engineering Structures, Universitat Politecnica de Catalunya, Barcelona Tech., ETSEIAT Campus Terrassa) ;
  • Cruz, Juan J. (Dept. of Strength of Materials and Engineering Structures, Universitat Politecnica de Catalunya, Barcelona Tech., ETSEIAT Campus Terrassa)
  • 투고 : 2010.11.22
  • 심사 : 2011.10.12
  • 발행 : 2011.12.10
⟨ 이전 논문 다음 논문 ⟩

초록

Asbestos-cement is a material with valuable strength and durability. It was extensively used for water distribution pipes across the world from the 1950s until the early 1980s. The network of pipes in this case study dates from the 1970s, and after more than 30 to 40 years of service, some pipes have been found to break under common service pressure with no apparent reason. A set of mechanical tests was performed including bending, compression, pressure and crushing tests. Microscopy analysis was also used to understand the material behaviour. Tests showed that there was a clear loss of strength in the pipes and that the safety factor was under the established threshold in most of the specimens. Microscopy results showed morphological damage to the pipes. The loss of strength was attributed to a leaching effect. Leaching damages the cement matrix and reduces the frictional interfacial shear stress.

키워드

참고문헌

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피인용 문헌

  1. Field study on non-invasive and non-destructive condition assessment for asbestos cement pipelines by time-domain fluid transient analysis vol.15, pp.1, 2016, https://doi.org/10.1177/1475921715624505