Home Architecture Umweltverträglichkeit von Betonzusatzmitteln / Environmental Impact of Superplasticizers
Article
Licensed
Unlicensed Requires Authentication

Umweltverträglichkeit von Betonzusatzmitteln / Environmental Impact of Superplasticizers

  • R. Galli and G. Kiayias
Published/Copyright: December 3, 2014

Abstract

A chemical risk assessment for the use of concrete admixtures was performed for the case of naphthalene sulfonate condensate (NS) which is a widely used supeφlastizicer. As a result of its use as a concrete admixture, NS and its degradation products in condensed naphthalene sulfonates can be emitted into the environment. In relation to other products such as detergents, the emissions of NS are classified as very low. The most important emissions of NS originate during its production and during the washing of concrete mixers when the wastewater is allowed to enter the sewers. Future emissions of naphthalene sulfonates are predicted for the case of storage/disposal of concrete waste, or the use of NS-containing concrete waste in road construction. The predicted concentrations of NS and naphthalene sulfonates in Switzerland (either on the regional or local scale) are expected to be below the predicted no-effect concentrations (PNEC values or "safe" concentrations).

Published Online: 2014-12-3
Published in Print: 1996-10-1

© 2014 by

Downloaded on 5.12.2025 from https://www.degruyterbrill.com/document/doi/10.1515/rbm-1996-5133/html
Scroll to top button