Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Effect of polymer modified cementitious coatings on water and chloride permeability in concrete
Highlights The efficiency to prevent chloride-induced corrosion of two cementitious coating modified with acrylic polymer was tested. Coatings act as a physical barrier, reducing water and chloride content into concrete. Coatings show a good water vapour permeability. The presence of the polymer allow to reduce coating porosity and to increase its hydrophobic properties.
Abstract Concrete coatings are widely used to improve durability of reinforced concrete structures in order to prevent and control reinforcement corrosion in chlorides containing environment. Cement-based coatings, as well as organic-based coatings, act as a physical barrier to the penetration of water, ions and gases. In this paper, the permeability of concrete, coated with commercial polymer-modified cementitious mortars with two different polymer-to-cement ratios, to water and chlorides was evaluated as a function of water absorption, chloride diffusion, chloride penetration rate and coating adhesion properties. Tests were performed on coated concrete specimens as well as on coating layers. The effect of physical barrier to chloride penetration and the ability to decrease water content into concrete were discussed, as well as the influence on the service life of reinforced concrete structures.
Effect of polymer modified cementitious coatings on water and chloride permeability in concrete
Highlights The efficiency to prevent chloride-induced corrosion of two cementitious coating modified with acrylic polymer was tested. Coatings act as a physical barrier, reducing water and chloride content into concrete. Coatings show a good water vapour permeability. The presence of the polymer allow to reduce coating porosity and to increase its hydrophobic properties.
Abstract Concrete coatings are widely used to improve durability of reinforced concrete structures in order to prevent and control reinforcement corrosion in chlorides containing environment. Cement-based coatings, as well as organic-based coatings, act as a physical barrier to the penetration of water, ions and gases. In this paper, the permeability of concrete, coated with commercial polymer-modified cementitious mortars with two different polymer-to-cement ratios, to water and chlorides was evaluated as a function of water absorption, chloride diffusion, chloride penetration rate and coating adhesion properties. Tests were performed on coated concrete specimens as well as on coating layers. The effect of physical barrier to chloride penetration and the ability to decrease water content into concrete were discussed, as well as the influence on the service life of reinforced concrete structures.
Effect of polymer modified cementitious coatings on water and chloride permeability in concrete
Diamanti, M.V. (Autor:in) / Brenna, A. (Autor:in) / Bolzoni, F. (Autor:in) / Berra, M. (Autor:in) / Pastore, T. (Autor:in) / Ormellese, M. (Autor:in)
Construction and Building Materials ; 49 ; 720-728
29.08.2013
9 pages
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
Effect of polymer modified cementitious coatings on water and chloride permeability in concrete
| British Library Online Contents | 2013
Effect of polymer modified cementitious coatings on water and chloride permeability in concrete
| Online Contents | 2013
EFFECT OF POLYMER MODIFIED CEMENTITIOUS COATINGS ON CHLORIDE INDUCED CORROSION OF STEEL IN CONCRETE
| British Library Conference Proceedings | 2015