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Article presents the results of the effect of humidity on early shrinkage of normal concrete with variable W/C ratio. As known for a long time, shrinkage is dependent of many factors. One of them is the W/C ratio and the quantity of water which is located in the concrete mix. In article there were discussed changes taking place in the concrete mix, the methods of research and the partial results obtained by the authors of the paper. Shrinkage is a phenomenon well known and studied by various research centers. The total amount of shrinkage may depend on various factors such as humidity, temperature, composition of the concrete mix, the W/C ratio, the size of the item. The study was conducted to determine the amount of shrinkage in its early stages. It is very important for concrete floors contractors, precast manufacturers to start at the right time finishing work and prevent the formation of shrinkage cracks.
Czasopismo
Rocznik
Tom
Strony
241--256
Opis fizyczny
Bibliogr. 16 poz., il., tab.
Twórcy
autor
- Politechnika Poznańska, Instytut Konstrukcji Budowlanych
autor
- Politechnika Poznańska, Instytut Konstrukcji Budowlanych
autor
- Politechnika Poznańska, Instytut Konstrukcji Budowlanych
Bibliografia
- 1. B. KLEMCZAK, Mechanical properties of young concrete-experiments and modeling, Archives of Civil Engineering, LIII, 1, 2007, 57-73
- 2. M. KASZYŃSKA, Effect of temperature on properties of fresh self-consolidating concrete, Archives of Civil Engineering, LII, 2, 2006, 277-287
- 3. T. ZDEB, J. ŚLIWIŃSKI, The influence of selected material and technological factors on mechanical properties and microstructure of reactive powder concrete (RPC), Archives of Civil Engineering, LVII, 2, 2011, 227-246
- 4. M. KOSIOR-KAZBERUK, D. JÓZWIAK-NIEDZWIEDZKA, Influence of fly ash from co-combustion of coal and biomass on scaling resistance of concrete, Archives of Civil Engineering, LVI, 3, 2010, 239-254
- 5. J.J. BROOKs, Influence of mix proportions, plasticizers and superplasticizers on creep and drying shrinkage of concrete. Magazine of Concrete Resarch. Vol. 41, 148, 1989,145-153.
- 6. P.C. AICTIN, P.C, Trwały wysokowartościowy beton – sztuka i wiedza. Materiały Konferencji: Dni Betonu – tradycja i nowoczesność. Szczyrk 2002, 7-36.
- 7. P.C. AICTIN P.C., Hydratacja cementu portlandzkiego widziana oczyma inżyniera budownictwa. Cement Wapno Beton, 3, 2003, 115-130.
- 8. W. KURDOWSKI, Chemia cementu, PWN Warszawa 1991.
- 9. A.M. NEVILLE, Properties of concrete, London 1996.
- 10. P. DE PAUW, G. DE SCHUTTER, L. TAERWE, Concrete slabs on grade: behavior under environmental conditions. International Conference: Creep, Shrinkage and Durability Mechanics of Concrete and other Quasi – Brittle Materials. Elsevier Science Ltd. 2001, 379-384.
- 11. E. TAZAWA, S. MIYAZAWA, Influence of cement and admixture on autogenous shrinkage of cement paste. Cement and Concrete Research. Vol. 25, 2, 1995, 288-292.
- 12. E. TAZAWA, S. MIYAZAWA, Autogenous shrinkage and drying shrinkage of high strength concrete. 5th international Sympisium on Utylization of High Strength, High Performance Concrete. Sandefi ord, Norway, 1999, 1254-1263.
- 13. T. NAWA, T. HORITA, A mechanism of autogenous shrinkage of cementitious materials. Cement Combinations for Durable Concrete. Dundee 2005, 425-434.
- 14. J. JASICZAK, P. SZYMAŃSKI, Dobór cementu w aspekcie zjawisk wczesnego skurczu betonu, XIX Konferencja Naukowo-Techniczna Jadwisin 2004, s. 271-278.
- 15. J. JASICZAK, P. SZYMANSKI, Influence of different kinds of cement on early shrinkage of concrete. Cement Combinations for Durable Concrete. Dundee 2005, 399-406.
- 16. J. JASICZAK, P. SZYMAŃSKI, Wczesny skurcz betonu o zmiennym wskaźniku w/c, modyfikowanego domieszkami chemicznymi i dodatkami mineralnymi. Materiały Konferencji: Dni Betonu – tradycja i nowoczesność, 2012, 561-568.
Typ dokumentu
Bibliografia
Identyfikator YADDA
bwmeta1.element.baztech-9e92adbc-dafa-47d0-918d-568cad68ff42