🕑 Reading time: 1 minuteAnti-washout admixture of concrete for underwater concreting is produced as a viscosity modifying admixture to enhance the rheological properties of cement paste. It mainly composed of microbial polysaccharides for example gum or polysaccharide derivatives for instance hydroxyethyl cellulose and hydroxypropyl methyl cellulose. It is demonstrated that, the Antiwashout admixture is substantially influential in enhancing the cohesiveness of concrete that is poured underwater and in danger of washout or segregation due to surrounding water. Moreover, it is by far the most utilized admixture in large repairing and placement applications. The Antiwashout admixture is also called viscosity improving admixture, and it is occasionally employed to create self compacting concrete. Finally, the advantages, disadvantages, classification, and practical considerations of Antiwashout admixture will be discussed in the following sections.
Fig.1: Anti-washout Admixture
- Advantages of Anti-Washout Admixture for Underwater Concreting
- Dosage of Anti-Washout Admixture for Underwater Concreting
- Classification of Anti-Washout Concrete Admixtures
- Principal Considerations for Anti-Washout Concrete Admixtures