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Wpływ temperatury na skuteczność polimerowych domieszek do betonu

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Identyfikatory
Warianty tytułu
EN
Effect of temperature on efficiency of polymer admixture to concrete
Języki publikacji
PL
Abstrakty
EN
Temperature is one of the most important factors affecting the efficiency of polymer admixtures to concrete, yet this relation is still not fully explained.The direction of changes depends on the type (chemical nature) of the admixture, and often also on its concentration and composition of the concretemix. Taking into consideration the big diversity of the used polymer admixtures, it is very hard to predict their temperature characteristics; this requires detailed testing. It is possible to find out, on the base of the collected data, that in the case of the new generation of the superplasticizers an increase of temperature usually leads to diminishing of the admixture efficiency. This means the necessity of increasing dosage of the superplasticizers of new generation at higher temperature.
Rocznik
Tom
Strony
34--36
Opis fizyczny
Bibliogr. 16 poz., il.
Twórcy
autor
  • Politechnika Warszawska
Bibliografia
  • [1] Młodecki J., Stebnicka M.: Domieszki do betonu. Poradnik. Centralny Ośrodek Informacji Budownictwa, Warszawa, 1996.
  • [2] Chemical Admixtures for Concrete. ACI Committee 212, Report No. 212.3R-91, 1999.
  • [3] Jackiewicz-Rek W., Łukowski P.: Wpływ podwyższonej temperatury cementu na właściwości zapraw. VI Konferencja Naukowo-Techniczna „Zagadnienia Materiałowe w Inżynierii Lądowej - MATBUD‘2011”, Kraków, 2011, 166 - 174.
  • [4] Kosmatka S. H., Kerkhoff B., Panarese W. C.: Design and Control of Concrete Mixtures, 14th edition, Portland Cement Association, 2003.
  • [5] Hampton J. S.: Extended workability of concrete containing high-range water-reducing admixtures in hot weather. W „Development in the Use of Superplasticizers”, ACI Spec. Publ. SP 68, Detroit, 1981, 409-422.
  • [6] Concrete Manual. US Bureau of Reclamation, 8th edition revised, Denver, 1981.
  • [7] Łukowski P.: Domieszki do zapraw i betonów. Polski Cement, Kraków, wyd. popr. i uzup. 2003.
  • [8] Czarnecki L., Broniewski T., Henning O.: Chemia w budownictwie. Arkady, Warszawa, 1996.
  • [9] Gołaszewski J., Szwabowski J.: Influence of superplasticizers on rheological behaviour of fresh cement mortars. Cement and Concrete Research, 34, 2004, 235 - 248.
  • [10] Petit J.-Y., Khayat K. H.,Wirquin E.: Coupled effect of time and temperature on variations of yield value of highly flowable mortar. Cement and Concrete Research, 36, 2006, 832 - 841.
  • [11] Jolicoeur C. i in.: The influence of temperature on the rheological properites of superplasticized cement paste. 5th CANMET/ACI International Conference on Superplasticizers and Other Chemical Admixtures in Concrete, Rzym, 1997, 379-405.
  • [12] Nawa T., Ichiboji H., Kinoshita M.: Influence of temperature on fluidity of cement paste containing superplasticizer with polyethylene oxide graft chains. 6th CANMET/ACI International Conference on Superplasticizers and Other Chemical Admixtures in Concrete, Nicea, 2000, 195-210.
  • [13] Flatt R. J. i in.: Interaction of superplasticizers with model powders in a high alkaline medium. 5th CANMET/ACI International Conference on Superplasticizers and Other Chemical Admixtures in Concrete, Rzym, 1997, 743-762.
  • [14] Kurdowski W.: Chemia cementu. PWN, Warszawa, 1991.
  • [15] Tsukada K., Ishimori M., Kinoshita M.: Performance of an advanced polycarboxylate-based powder superplasticizer. 7th CANMET/ACI International Conference on Superplasticizers and Other Chemical Admixtures in Concrete, Berlin, 2003, 393-407.
  • [16] Griesser A.: Cement-Superplasticizer Interactions at Ambient Temperatures. Swiss Federal Institute of Technology, Zurich, 2002.
Typ dokumentu
Bibliografia
Identyfikator YADDA
bwmeta1.element.baztech-article-BTB6-0003-0086
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