Polymer impregnation of concrete as a means of improving corrosion resistance

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dc.contributor.advisorTait, Robert Ben_ZA
dc.contributor.authorPotgieter, Hentieen_ZA
dc.date.accessioned2015-04-22T12:50:55Z
dc.date.available2015-04-22T12:50:55Z
dc.date.issued1980en_ZA
dc.descriptionBibliography: p. [i-iii].en_ZA
dc.description.abstractThe service life of concrete in particularly extreme bacteriological environments has long been a problem that has been facing engineers and concrete materials experts. This is particularly relevant for the case of concrete sewer pipes, the useful life of which is critically limited by corrosion due primarily, and ultimately, to sulphide attack. Sulphides are formed from the sewage sulphates, by bacteria in the slime layers on the walls of the pipe. These diffuse, firstly into the liquid, and then into the sewer atmosphere as hydrogen sulphide, which is then in turn oxidised to sulphuric acid. Hydrogen sulphide gas is well known for its characteristic "rotten eggs" odour, but more important although less known, for its extreme toxicity. The maximum safe concentration in air is only twice that of hydrogen cyanide. It also has the dangerous side effect that the ability to sense it by smell is quickly lost after first encountering the gas, and deaths have occurred in sewers that can be both directly and indirectly attributed to hydrogen sulphide poisoning. The corrosion discussed in this thesis refers primarily to that caused by this bacteriologically created sulphuric acid attack in the space above the liquid, as opposed to sub-liquid level corrosion due to aggressive chemicals, more commonly associated with industrial effluents. This is all discussed more fully in later sections.en_ZA
dc.identifier.apacitationPotgieter, H. (1980). <i>Polymer impregnation of concrete as a means of improving corrosion resistance</i>. (Thesis). University of Cape Town ,Faculty of Engineering & the Built Environment ,Centre for Materials Engineering. Retrieved from http://hdl.handle.net/11427/12690en_ZA
dc.identifier.chicagocitationPotgieter, Hentie. <i>"Polymer impregnation of concrete as a means of improving corrosion resistance."</i> Thesis., University of Cape Town ,Faculty of Engineering & the Built Environment ,Centre for Materials Engineering, 1980. http://hdl.handle.net/11427/12690en_ZA
dc.identifier.citationPotgieter, H. 1980. Polymer impregnation of concrete as a means of improving corrosion resistance. University of Cape Town.en_ZA
dc.identifier.ris TY - Thesis / Dissertation AU - Potgieter, Hentie AB - The service life of concrete in particularly extreme bacteriological environments has long been a problem that has been facing engineers and concrete materials experts. This is particularly relevant for the case of concrete sewer pipes, the useful life of which is critically limited by corrosion due primarily, and ultimately, to sulphide attack. Sulphides are formed from the sewage sulphates, by bacteria in the slime layers on the walls of the pipe. These diffuse, firstly into the liquid, and then into the sewer atmosphere as hydrogen sulphide, which is then in turn oxidised to sulphuric acid. Hydrogen sulphide gas is well known for its characteristic "rotten eggs" odour, but more important although less known, for its extreme toxicity. The maximum safe concentration in air is only twice that of hydrogen cyanide. It also has the dangerous side effect that the ability to sense it by smell is quickly lost after first encountering the gas, and deaths have occurred in sewers that can be both directly and indirectly attributed to hydrogen sulphide poisoning. The corrosion discussed in this thesis refers primarily to that caused by this bacteriologically created sulphuric acid attack in the space above the liquid, as opposed to sub-liquid level corrosion due to aggressive chemicals, more commonly associated with industrial effluents. This is all discussed more fully in later sections. DA - 1980 DB - OpenUCT DP - University of Cape Town LK - https://open.uct.ac.za PB - University of Cape Town PY - 1980 T1 - Polymer impregnation of concrete as a means of improving corrosion resistance TI - Polymer impregnation of concrete as a means of improving corrosion resistance UR - http://hdl.handle.net/11427/12690 ER - en_ZA
dc.identifier.urihttp://hdl.handle.net/11427/12690
dc.identifier.vancouvercitationPotgieter H. Polymer impregnation of concrete as a means of improving corrosion resistance. [Thesis]. University of Cape Town ,Faculty of Engineering & the Built Environment ,Centre for Materials Engineering, 1980 [cited yyyy month dd]. Available from: http://hdl.handle.net/11427/12690en_ZA
dc.language.isoengen_ZA
dc.publisher.departmentCentre for Materials Engineeringen_ZA
dc.publisher.facultyFaculty of Engineering and the Built Environment
dc.publisher.institutionUniversity of Cape Town
dc.subject.otherMetallurgy and Materials Scienceen_ZA
dc.titlePolymer impregnation of concrete as a means of improving corrosion resistanceen_ZA
dc.typeMaster Thesis
dc.type.qualificationlevelMasters
dc.type.qualificationnameMScen_ZA
uct.type.filetypeText
uct.type.filetypeImage
uct.type.publicationResearchen_ZA
uct.type.resourceThesisen_ZA
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