Current Issue Flipbook

Trade Journals for the Concrete Industry

Current Issue Archive Online Flipbooks CPI Middle East CPI TV Events Buyers' Guide Newsletter Advertising Subscription

Efflorescence on concrete products –  causes and influential factors

Progress report, part 1


Efflorescence today still repeatedly presents a problem for the acceptance of concrete products. Stone surfaces with light discolouring or grey to yellowish-brown surfaces are still frequently encountered, particularly on earth-moist manufactured concrete products such as e.g. concrete paving stones. While these do not have a negative influence on the quality of the paving stones, they still often lead to complaints from the purchaser (see Fig. 1). As a result, almost all larger manufacturers of concrete products point out in their General Terms & Conditions that efflorescence on cement-bonded building materials can technically not be reliably prevented and that it therefore does not substantiate grounds for complaint. A similar wording can also be found in the relevant technical standards (e. g. DIN EN 1338 or DIN EN 1339). The customers then claim that they purchased “black” and not “grey” paving stones. Such disputes are frequently brought to court, which however rarely leads to a satisfactory solution for the parties involved.

Show article
Download article


Materialprüfungs- und Versuchsanstalt Neuwied
Sandkauler Weg 1, 56564 Neuwied, Germany
T +49 2631 39930, F +49 2631 399340
info@mpva.de, www.mpva.de

CPi worldwide journals are trade journals for the concrete and precast concrete industry that are published in 10 different language editions in more than 170 countries. These trade journals, with their practical editorial reporting on research, production and applications, are specifically addressing the decision makers of the concrete and precast concrete industry.

About us
ad-media GmbH

Industriestrasse 180
50999 Cologne

T: + 49 2236 96 23 90
F: + 49 2236 96 23 96

  • Magazine
  • CPi-tv
  • Events
  • Buyers' Guide
  • Newsletter
  • Advertising
  • Patents
  • ad-media GmbH
  • Linkedin
  • Imprint
  • Data Protection
We are using Cookies on www.cpi-worldwide.com. Some of them are essential, while others help us improve this website and your experience. More information can be found in our privacy policy. Accept all Extended Configuration
Cookies of this category are required for the basic functions of the website. They are used for safe and proper use and therefore cannot be deactivated.
Cookies of this category allow us to analyze (Google Analytics) the use of the website and measure performance. They also help us to provide useful functions.
Cookies of this category allow us to show third-party content (social networks, videos)
Save settings and close Accept all