Concrete pathologies in sewer structures: microstructural analysis - Archive ouverte HAL Access content directly
Journal Articles Journal of Building Pathology and Rehabilitation Year : 2019

Concrete pathologies in sewer structures: microstructural analysis

(1) , (2) , (1)
1
2

Abstract

Corrosion of concrete sanitary sewers has become a major problem around the world. Concrete durability in sewerage systems is mainly related to the presence of effluents containing sulfur-rich compounds that lead to an acid attack and expansion reactions. This paper presents a microstructural analysis of concretes (two case studies) taken from corroded sewer pipes. The objective of this investigation is to highlight and identify the pathologies of cementitious materials in sanitation networks. A scanning electron microscope equipped with energy dispersive X-ray analysis (SEM-EDS) was performed on fragments of concrete samples taken at different areas. In addition to these microstructural analysis, bulk density and water-accessible porosity tests are performed, the results obtained were compared with those of a reference concrete (new pipe). The results of the analysis showed a deterioration of the pipes in both faces (internal and external) with the presence of products prejudicial for their durability.
Fichier principal
Vignette du fichier
Oualit_et al_2019_Concrete pathologies in sewer structures_accepted.pdf (1.16 Mo) Télécharger le fichier
Origin : Files produced by the author(s)
Loading...

Dates and versions

hal-02473271 , version 1 (14-02-2020)

Identifiers

Cite

Mehena Oualit, Raoul Jauberthie, M. Tahar Abadlia. Concrete pathologies in sewer structures: microstructural analysis. Journal of Building Pathology and Rehabilitation, 2019, 4 (1), pp.12. ⟨10.1007/s41024-019-0051-y⟩. ⟨hal-02473271⟩
71 View
86 Download

Altmetric

Share

Gmail Facebook Twitter LinkedIn More