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„Ochrona przed Korozją” (Corrosion Protection) No. 01/2015


View cover and table of contents (in Polish and English) (pdf)



DOI: 10.15199/40.2015.1.1


Microstructure changes of hardened cement paste in time under the influence of ammonium chloride solution



Faculty of Civil Engineering, Silesian University of Technology, Gliwice


Durability of reinforced concrete tanks to store liquid wastes is an important exploitation problem. The tightness of the walls, on which depends the protection of groundwater from contamination is of particular importance. This paper presents the results of the microstructure of hardened cement paste, corroded by ammonium chloride – a compound present in coke sewage. X-ray examinations on phase composition were conducted. The porosity of the microstructure, morphology and phase identification were determined under the scanning electron microscope. The concentrations of chloride ions were determined basing on potentiometric tests. It was found that the porosity of the specimens was reducing over time, because empty spaces were occupied by secondary corrosion products.

Keywords: ammonium chloride, concrete corrosion, decalcifi cation, porosity, thaumasite



Vol. 58, nr 1

s. 3-10

Ref. 14



DOI: 10.15199/40.2015.1.2


Optical properties of a decorative-protective wall barrier coating system based on silver


Institute for Engineering of Polymer Materials and Dyes, Paints and Plastics Department in Gliwice



”ALCOR” Sp. z o.o. Research and Production Centre in Opole


Optical properties of a protective – decorative wall barrier coating system exposed to the UV and visible light are discussed. The influence of a photocatalytic silver layer on whiteness, brightness and color difference is examined.

Keywords: biocorrosion, multilayered protective coating, silver, metallic silver, ionic silver



Vol. 58, nr 1

s. 11-18

Ref. 28



Corrosion protection in practice


DOI: 10.15199/40.2015.1.3


Marketing of construction products under regulation (EU) No. 305/2011 of the European Parliament and of the council, and in light of the act on construction products


Instytut Techniki Budowlanej, Warszawa


The requirements of Regulation No. 305/2011 (CPR) establishing harmonized conditions for the marketing of construction products came into force in 2013. The regulation also led to the amendment of the Act on Construction Products. The paper presents the current situation in the legal implementation of Regulation 305. The obligations of the manufacturer, importer, distributor, and rules for introducing products on the market are presented. The current status of implementation of the requirements for the marketing of fi re protection products is also discussed.

Keywords: approvals, assessment documents, construction products, European harmonization, CPR, fi re protection products



Vol. 58, nr 1

s. 19-22

Ref. 7