On durability aspects of concrete members formed against permeable formwork

• Autorzy: Ajdukiewicz A.
• Języki publikacji: EN

Abstrakty

EN

The durability of concrete structures is commonly considered in all domains of building activity. One of the promising methods for the durability improvement of concrete surface is application of controlled permeability formwork (CPF). Nowadays, a number of advanced materials designed to be effective as linings in formwork is commonly available. The actual effectiveness of such formworks depends significantly on the concrete mixture, its placing and compacting, and many other factors. Despite the good results of individual tests, many aspects of the problem have not been clarified yet. The recent tests were mostly done on specimens and very few results concerning the effects on entire members have been published so far. Apart from different tests on basic properties of concrete surface - like hardness, abrasion, tensile strength, resistance to water penetration and absorption, chloride diffusion, carbonation, frost resistance - the tests presented here were focused on the effectiveness of reduced concrete cover.

Słowa kluczowe

EN

concrete; concrete structures; controlled permeability formwork; durability of concrete; properties of concrete surface

PL

beton; konstrukcja betonowa; deskowanie; przepuszczalność; trwałość

• Wydawca: Wydawnictwo Politechniki Poznańskiej
• Czasopismo: Foundations of Civil and Environmental Engineering
• Rocznik: 2006
• Tom: No. 7
• Strony: 7--16
• Opis fizyczny: Bibliogr. 13 poz.

Twórcy

autor

Ajdukiewicz A.

• Department of Structural Engineering, Faculty of Civil Engineering, Silesian University of Technology, Gliwice, Poland Tel.: [phone]; fax: [phone],

Bibliografia

• 1. Johnson W. R.: The Usc of Absorptive Wall Boards for Concrete Forms. Journal of AGI, Procccdings, 58, 6 (1941) 621-630.
• 2. Bidel E. N., Blanks R. F.: Absorptive Form Lining. Journal of AGI, Proceed-ings, 59, 3(1942)253-268.
• 3. Malone P.G.: Use of Permeable Formwork in Placing and Curing Concrete. US Army Corps of Engineers Tcchnical Report 1999 - SL-99-12.
• 4. Kasai Y. et al. Comparison of cement contents in concrete surface prepared in permeablc form and conventional form. Cement Association of Japan, 1988,298-301.
• 5. Price W. F., Widdows S.: The effects of permeable formwork on the surface properties of concrete. Magazin of Concrete Research, 43,155 (1991) 94-104.
• 6. Cairns J.: Enhancements in surface ąuality of concrete through use of con-trollcd permeability formwork liners. Magazine of Concrete Research, 51, 2 (1999)73-86.
• 7. Schelling, G.: Untersuchung an Betonrandzonen mit/ohne Schalungseinla-gen, Report Fachhochschule Stuttgart, 1995.
• 8. Barnewold, R.: Saugende Schalungsbahnen, Eine Technik żur yerbesserung der Betonradzone. Fachhochschule Stuttgart - Hochschule fur Technik, Dis-sertation 2000.
• 9. Marosseky, M. et al.: Textile form method to improve concrete durability. Concrete International, 15, 11 (1993) 37-42.
• 10. Ajdukiewicz A., Węglorz M.: Direct Method for Improvement of Durability of Reinforced Concrete Structures. Proceedings of the 5th International Con-ference Analytical Models and New Concepts in Concrete and Masonry Structures, Gliwice, 2005; pp. 5-6 (short version), 8p.(CD - fuli version).
• 11. Bloomfield J. P., Davies K., Hladky K.: The use of permanent corrosion monitoring in new and existing reinforccd concrete Structures, Cement & Concrete Composites, 24, l (2002) 27-34.
• 12. Ajdukiewicz A., Węglorz M.: Direct Method for Improvement of Durability of Concrete Structures. Archives of Civil Engineering, 52, 2 (in printing)
• 13. Ajdukiewicz , A., Kliszczewicz, A.: Impnwernent of Concrete Surface by Controlled Permeability Formwork - Increase of Cracking Resistance. Proceedings of the fib-Symposium on Concrete Structures: the Challenge of Creativity, Association Francaise de Genie Civil, Avignon 2004, 322-323 (short vcrsion), 8p. (fuli version on CD).