Abstract: Creep and shrinkage strains of concrete can have prejudicial consequences in structures. Often, the values of these uncontrolled strains appear to be clearly different from the expected ones. In fact, there is not yet a physical explanation perfectly satisfactory of creep and the codified descriptions of this phenomenon are always unreliable and don’t take the effect of admixtures into consideration. In the context of this study, and starting from an important experimental database coming from international laboratories and research centers, new models of creep calculation were developed and allow to take the effect of water-reducing admixture into consideration and to obtain results more satisfactory than those of the Eurocode 2.

• Publication Date: 10-Dec-2017
• DOI: 10.15224/978-1-63248-139-9-28
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Abstract: Electrochemical chloride extraction from a reinforced concrete structure may be accompanied with an electrochemical injection of healing agents if such agents are positively charged and are able to migrate towards the activated reinforcement. Positive charge carrying nanoparticles or cathionic corrosion inhibitors might be the proper choice. Organic substances with a positive charge and their salts are mostly such inhibitors. The essential conditions for successful application of such corrosion inhibitors are their sufficient corrosion inhibition efficiency that was studied and evaluated elsewhere and their stability of positive charge in alkaline concrete environment and their migration ability through concrete pore system.

• Publication Date: 10-Dec-2017
• DOI: 10.15224/978-1-63248-139-9-27
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