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Founded in 1904 and headquartered in Farmington Hills, Michigan, USA, the American Concrete Institute is a leading authority and resource worldwide for the development, dissemination, and adoption of its consensus-based standards, technical resources, educational programs, and proven expertise for individuals and organizations involved in concrete design, construction, and materials, who share a commitment to pursuing the best use of concrete.
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Home > Publications > International Concrete Abstracts Portal
The International Concrete Abstracts Portal is an ACI led collaboration with leading technical organizations from within the international concrete industry and offers the most comprehensive collection of published concrete abstracts.
Title: Lift Stations-A Testing Ground for Concrete Durability
Author(s): Shondeep L. Sarkar
Publication: Special Publication
Appears on pages(s): 1357-1378
Keywords: Carbonation; concretes; durabilty; ettringite; gypsum; sulfuic acid; sulfate
Abstract:A network of lift stations forms an integral part of a city’s wastewater disposal system. These underground concrete pits through which the sewage is pumped, are known to represent an environment highly conducive for chemical attack of concrete. Apart from the acidic state created by the sewage, gases emanated due to microbial reactions can cause the concrete to deteriorate rapidly. Fifteen lift stations were investigated to determine the deterioration depth profile of the concretes. Cores from strategic locations inside each lift station were tested and analyzed using different techniques, including petrography and scanning electron microscopy. Based on these results, a cost-effective yet practical means of evaluating the present state of the concrete, and the precise depth to which the concrete must be removed for effective rehabilitation has been developed. These results are presented in this paper.
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