Shrinkage of Industrial Concrete Floors

Article Preview

Abstract:

The paper deals with issues connected to shrinkage of industrial concrete floors and the consequent formation of cracks within the structure, since it handles about an undesirable effect. A huge number of cracks may cause serious defects and faults. The beginnings of the paper do summarise the theoretical background of volumetric changes, discusses their types and explains the possible methodologies for their measurements, the major objective of which is focused on the determination of the amount of cracks. Inside of the experimental part three samples are monitored with respect to shrinkage. The measurements are done with the utilisation of a shrinkage drain and are carried out for a time interval of 12 hours, whereas the structure moves the most under this particular time period. In the last chapters it comes to an evaluation of the results. This includes a comparison of obtained data against normative requirements dealing with shrinkage, and a subsequent a comparison of samples, since the observations are done under the exact same boundary conditions

You might also be interested in these eBooks

Info:

Periodical:

Pages:

317-322

Citation:

Online since:

October 2014

Export:

Price:

Permissions CCC:

Permissions PLS:

Сopyright:

© 2014 Trans Tech Publications Ltd. All Rights Reserved

Share:

Citation:

* - Corresponding Author

[1] ČSN 74 4505 Floors – Common Regulations (Podlahy - Společná ustanovení), Prague: Czech Office for Standards, Metrology and Testing (Praha: Úřad pro technickou normalizaci, metrologii a státní zkušebnictví), 2012. (in Czech).

Google Scholar

[2] R. Hela, Technology in concrete II (Technologie betonu II. ), In Study supports, Brno, 2007. (in Czech).

Google Scholar

[3] Information on <http: /www. tzbportal. sk/beton-betonarky/betonove-prumyslove-podlahy. html> beton-betonarky [online] 2014, [cit. 2014-01-16].

Google Scholar

[4] Information on <http: /www. schleibinger. com/cmsimple/?Schwinden: Schwindrinne> Schleibinger [online] 2014, [cit. 2014-01-16].

Google Scholar

[5] ČSN EN 1992-1-1 Eurocode 2: Design of concrete structures - Part 1-1: General reles and rules for buildings, (Eurokód 2: Navrhování betonových konstrukcí - Část 1-1: Obecná pravidla a pravidla pro pozemní stavby), Prague: Czech Office for Standards, Metrology and Testing, (Praha: Úřad pro technickou normalizaci, metrologii a státní zkušebnictví), 2006. in Czech.

Google Scholar

[6] E. Tazawa: Committee Report. Proceedings of the International Workshop organized by JCI (Japan Concrete Institute) – Autogenous Schrinkage of concrete (Hiroshima, June 13. –14, 1998). London: E&FN Spon (1999).

Google Scholar

[7] T. Zadražil, F. Vodák, H. Klokočníková, Changes in the structure and strength of concrete induced by thermal stress (Změny struktury a pevnosti betonu vyvolané tepelným namáháním). Building horizon (Stavební obzor), 5/2005, pp.141-143.

Google Scholar