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8. Importance of plasticizers and superplasticizers
Plasticizers and superplasticizers account for almost 70% of the additives used.
8.1 Plasticizers – Water reducers
They cause cement grains to deflocculate. This is because the attractive forces at the surface of cement grains tend to cause them to clump together in the form of flakes, trapping some of the water in the mix. They disperse the cement grains and release the trapped water, thus increasing fluidity. They increase concrete compactness by reducing mixing water. They also reduce the risk of concrete segregation (section 3.1.2
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Importance of plasticizers and superplasticizers
Other types of additives
Bibliography
Standards and norms
- Produits chimiques liquides à usage industriel. Détermination de la masse volumique à 20 °C - ISO 758:1976 - Novembre 1976
- Agents de surface. Détermination du pH des solutions aqueuses. Méthode potentiométrique - ISO 4316:1977 - Août 1977
- Plastics – Vinyl chloride homopolymers and copolymers – Chlorine dosing - NF EN ISO 1158 - Juillet 1998
- Utilisation du chlorure de calcium et des adjuvants contenant...
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SYNAD (Additives Producers' Association)
CERIB (Research center for the concrete industry)
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