Testing concrete durability in sewer environment

P. Soroushian, R. U.D. Nassar, H. Chowdhury, T. Ghebrab

Research output: Contribution to journalArticlepeer-review

3 Scopus citations

Abstract

Laboratory and field investigations were conducted in order to develop additives to mitigate the microbialinduced corrosion of concrete-based infrastructure in sanitary sewer systems. A laboratory system was developed to simulate the conditions facilitating microbialinduced corrosion of concrete in a sanitary sewer environment. Various concrete formulations were examined based on their resistance to microbial-induced corrosion in simulated laboratory and also in field exposure conditions. Of the various strategies considered, the mix formulation incorporating both polymer emulsion and fine pozzolan proved to be a viable means of enhancing concrete resistance to acid attack and moisture sorption, and to microbial-induced corrosion in simulated laboratory condition and also in an actual sewer environment. The polymer emulsion lines the capillary pore surfaces, and partially blocks the capillary pore system. Pozzolans further refine the size distribution and the connectivity of capillary pores, and also favourably affect the chemistry of concrete. Control of moisture sorption, enhancement of acid resistance, and alteration of the capillary pore surfaces and connectivity are the primary means through which the combination of polymer emulsion and fine pozzolans enhance the resistance of concrete to microbial-induced corrosion. ICE Publishing, all rights reserved.

Original languageEnglish
Pages (from-to)35-44
Number of pages10
JournalProceedings of Institution of Civil Engineers: Construction Materials
Volume163
Issue number1
DOIs
StatePublished - Feb 1 2010

Keywords

  • Concrete technology & manufacture
  • Corrosion
  • Waste management & disposal

Fingerprint

Dive into the research topics of 'Testing concrete durability in sewer environment'. Together they form a unique fingerprint.

Cite this