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

Power Ultrasound: An effective method to accelerate strength development of cementitious materials

Modern trends in concrete manufacture and process control


In precast concrete production the most important requirement is a fast early strength development with adequate workability of fresh concrete. To facilitate sufficient early strength development appropriate concrete mixtures and procedures are applied, i.e. low water to cement ratios, high cement content and heat treatment are essential. In some cases the addition of superplasticizers is necessary to ensure good workability. The disadvantage of highly efficient superplasticizers is the induced delay in the hydration progress and early strength development. Appropriate strength development can be achieved by adding accelerating admixtures and/or heat treatment. Unfortunately both methods may induce durability risks (corrosion effects, delayed ettringite formation), if they are not properly applied. Furthermore, heating of formworks disagrees with recent economic and ecologic requirements. The present study discusses the capability and challenges of power ultrasound application in concrete production. The main aim is to accelerate early strength development of cementitious materials by applying 20 kHz power ultrasound.

Show article
Download article


Bauhaus-Universität Weimar
F. A. Finger-Institut für Baustoffkunde
Coudraystraße 11 · 99421 Weimar, Germany
T +49 3643 584761 · F +49 3643 584759

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