EJPAU 2007. Halicka A. PARAMETERS OF INTERFACE BETWEEN SHRINKABLE AND EXPANSIVE CONCRETE RESULTING FROM THEIR ADHESION

Electronic Journal of Polish Agricultural Universities (EJPAU) founded by all Polish Agriculture Universities presents original papers and review articles relevant to all aspects of agricultural sciences. It is target for persons working both in science and industry,regulatory agencies or teaching in agricultural sector. Covered by IFIS Publishing (Food Science and Technology Abstracts), ELSEVIER Science - Food Science and Technology Program, CAS USA (Chemical Abstracts), CABI Publishing UK and ALPSP (Association of Learned and Professional Society Publisher - full membership). Presented in the Master List of Thomson ISI.

2007
Volume 10
Issue 4

Topic:

Civil Engineering

ELECTRONIC
JOURNAL OF
POLISH
AGRICULTURAL
UNIVERSITIES

Halicka A. 2007. PARAMETERS OF INTERFACE BETWEEN SHRINKABLE AND EXPANSIVE CONCRETE RESULTING FROM THEIR ADHESION, EJPAU 10(4), #15.
Available Online: http://www.ejpau.media.pl/volume10/issue4/abs-15.html

PARAMETERS OF INTERFACE BETWEEN SHRINKABLE AND EXPANSIVE CONCRETE RESULTING FROM THEIR ADHESION

Anna Halicka
Lublin University of Technology, Lublin, Poland

ABSTRACT

Two aspects of static work of the joint between shrinkable and expansive concrete, resulting from the specific nature of the adhesion of expansive concrete, are discussed. Firstly, the effectiveness of the joint between shrinkable and expansive concrete working in different stress-strain states was tested. It was stated that the strength of such a joint is greater than in the case of the connection of two shrinkable concretes. Secondly, it was considered that expansion occurs in the young expansive concrete while the adhesion is still in process and the interface is deformable. On the basis of the layer structures' mechanics the influence of interface deformability on the initial stress-strain state, caused by expansion in concrete composite structures, was confirmed. The stresses caused in the interface by expansion are lower at the end of the composite beam or plate than in the case of a non-deformable interface, but they appear on the longer section of the beam. The final value of the force of expansion, causing the ‘prestressing’ of an element, changes along the composite beam or plate according to the level of interface deformability.

Key words: composite concrete structures, expansive concrete, adhesion, interface, bond strength, deformability of interface.

Anna Halicka
Lublin University of Technology, Lublin, Poland
Nadbystrzycka 40, 20-618 Lublin, Poland
Phone: 48-81-5384394
email: a.halicka@pollub.pl

Responses to this article, comments are invited and should be submitted within three months of the publication of the article. If accepted for publication, they will be published in the chapter headed 'Discussions' and hyperlinked to the article.