The effect of form pressure on the air void structure of SCC

Mikkel Vibæk Jensen, Marianne Tange Hasholt, Mette Rica Geiker

Research output: Chapter in Book/Report/Conference proceedingArticle in proceedingsResearchpeer-review

Abstract

The high workability of self-compacting concrete (SCC) invites to high casting rates. However, casting walls at high rate may result in large pressure at the bottom of the form and subsequently compression of the air voids. This paper deals with the influence of hydrostatic pressure during setting on the air void structure of hardened, air entrained SCC. The subject was examined through laboratory investigations of SCC with two different amounts of air entrainment. The condition in the form was simulated by using containers making it possible to cure concrete under various pressures corresponding to the bottom of castings of 0, 2, 4, and 6 meters height. The laboratory investigations were supplemented with data from two full-scale wall castings. The air void structure of the hardened concretes was determined on plane sections. The results indicate that the pressure related changes of the air void structure may be estimated by using Boyle-Mariottes law. However, other conditions such as the form filling method might influence.
Original languageEnglish
Title of host publicationSCC 2005 : Proceeding of the Second North American Conference on Design adn use of Self-Consolidating Concrete (SCC) and the Fourth International RILEM Symposium on Self-Compacting Concrete
Number of pages1270
Volume2
Place of PublicationChicago
PublisherHanley Wood, LLC
Publication date2005
Edition1
Pages327-333
ISBN (Print)0-924659-64-5
Publication statusPublished - 2005
EventSCC 2005 : The Second North American Conference on Design adn use of Self-Consolidating Concrete (SCC) and the Fourth International RILEM Symposium on Self-Compacting Concrete - Chicago, USA
Duration: 1 Jan 2005 → …

Conference

ConferenceSCC 2005 : The Second North American Conference on Design adn use of Self-Consolidating Concrete (SCC) and the Fourth International RILEM Symposium on Self-Compacting Concrete
CityChicago, USA
Period01/01/2005 → …

Cite this

Jensen, M. V., Hasholt, M. T., & Geiker, M. R. (2005). The effect of form pressure on the air void structure of SCC. In SCC 2005: Proceeding of the Second North American Conference on Design adn use of Self-Consolidating Concrete (SCC) and the Fourth International RILEM Symposium on Self-Compacting Concrete (1 ed., Vol. 2, pp. 327-333). Hanley Wood, LLC.