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

Determining fresh concrete water content rapidly by immersion probe

Water content determines concrete characteristics


It frequently occurs in practical construction work that the actual water content in a construction component is found to be substantially more than the target water content. If this is noticed – mostly for reasons of poor strength – then the cause generally becomes a subject of dispute. Was the water content already too great on delivery or was the consistency raised with water by wish of the construction site above the consistency ordered? For example, if an F3 concrete has been ordered with a 54 cm target after pumping, it then is “enhanced” with water. This is obviously “recognisably too soft concrete”, which the construction company is not permitted to install according to HGB § 377. In terms of water content, often only the water (intrinsic moisture + added water) is taken into consideration and the proportion of water from the admixture not recorded. However, the latter normally has to be taken into account with admixture content above 3 l/m3. This paper is concerned with determining water content by means of radar impulse technology and will describe experience gained both from practice and from a laboratory test series. Advice on suitability in practice will be given and the limitations of this measurement method pointed out.

Show article
Download article


Am Strauch 86
40723 Hilden, Germany
T +49 2103 895946
F +49 2103 895947

Im Stöck 2
76275 Ettlingen, Germany
T +49 7243 59210
F +49 7243 592140

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