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Permeability tests for mix design developmentand quality control of precast concrete members

Durability design specifications and test methods


The durability of reinforced concrete structures, which can predominantly be linked to the resistance against reinforcement corrosion, remains a major concern for the modern construction industry. Recent developments show that the concrete industry is slowly moving away from the prescriptive design concept, in which durability specifications are limited to strength classes and mix design parameters. Performance-based design and quality control of concrete durability, on the other hand, is based on an assessment of relevant material properties of the concrete, which can be used to predict the potential design life of the structure. A number of test methods have been developed worldwide and are used to assess the potential durability of concrete members in the design stage and during or after construction. This paper presents a practical example on the application of the South African Oxygen Permeability Test for design and quality control of precast concrete highway barriers.

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CPi worldwide journals are trade journals for the concrete and precast concrete industry that are published in 10 different language editions in more than 170 countries. These trade journals, with their practical editorial reporting on research, production and applications, are specifically addressing the decision makers of the concrete and precast concrete industry.

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