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Additives for concrete – an overview


Modes of action and areas of application

 


Concrete additives are added to concrete to modify the properties of fresh and hard concrete by chemical and physical effects in order to comply with technological and mechanical requirements. Since they are normally only added to the concrete in small amounts, there is usually no need to take them into consideration when calculating the volume of materials. Exceptions are airentraining agents (AEAs) (cf Table 1) and fluidifier concrete additives (in most cases plasticisers) particularly when used with self-compacting, highstrength or even ultra-high-strength concretes. Concrete additives are available as liquids, powders, granules or suspensions.

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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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