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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: Influence of Self-Healing Stimulated via Crystalline Admixtures on Chloride Penetration
Author(s): Estefanía Cuenca, Giacomo Cislaghi, Michael Puricelli, and Liberato Ferrara
Publication: Special Publication
Appears on pages(s):
Keywords: chlorides, concrete, crystalline admixtures, durability, self-healing
Abstract:The cracks in concrete provide a way of entry to aggressive agents. These can affect the structure durability, mainly when exposed to extremely aggressive conditions such as marine environments. This paper analyzes the effects of self-healing on the resistance to chloride penetration, being the healing capacity autogenous and stimulated by crystalline admixtures. First, the effects of chlorides on the concrete compressive strength have been studied. To this aim, concrete cylinders were exposed to different curing situations (moist room at 95% RH, immersion in a chloride solution -165 g/l NaCl - and wet/dry cycles in salt water) along a time frame ranging from 7 to 84 days. Secondly, the effects of chlorides on pre-cracked cylinders have been analyzed. To this purpose, other cylinders cured under the same three conditions as above, were pre-cracked at 7 and 28 days and were then similarly cured for further 1 to 3 months, inspecting the sealing of the cracks. Finally, chloride penetration was determined by boundary color change methodology. The final aim of the work is to determine the maximum crack width which can be sealed, in order to define a performance based durability design approach for structures in aggressive exposure conditions.
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