Influence of temperature on efficiency of superplasticizing admixtures for concrete

• Autorzy: Łukowski P.
• Języki publikacji: EN

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 concrete mix. 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.

Słowa kluczowe

EN

admixture; concrete; efficiency; superplasticizer; temperature

PL

domieszki; beton; wydajność; superklasyfikator

• Wydawca: Agord - Karol Brzeziński
• Czasopismo: Journal of Building Chemistry
• Rocznik: 2016
• Tom: Vol. 1, iss. 1
• Strony: 32--36
• Opis fizyczny: Bibliogr. 25 poz., rys., tab. wykr.

Twórcy

autor

Łukowski P.

• Department of Building Materials Engineering, Faculty of Civil Engineering, Warsaw University of Technology, Al. Armii Ludowej 16, 00-637 Warsaw, Poland

Bibliografia

• ACI 212.3R-10: Report on chemical admixtures for concrete. American Concrete Institute, Farmington Hills, USA, 2010.
• Czarnecki L., Broniewski T., Henning O.: Chemistry in construction (in Polish). Arkady, Warsaw, 1996.
• EN 934-2, 2012. Admixtures for concrete, mortar and grout - Part 2: Concrete admixtures – Definitions, requirements, conformity, marking and labelling. European Standard.
• Flatt R.: Interaction of superplasticizers with model powders in a high alkaline medium. 5th CANMET/ACI International Conference on Superplasticizers and Other Chemical Admixtures in Concrete, Rome, Italy, 1997, 743-762.
• Gołaszewski J.: Effect of temperature on rheological properties of superplasticized cement mortars. 8th CANMET/ACI International Conference on Superplasticizers and Other Chemical Admixtures in Concrete, Sorrento, Italy, 2006, 423-440.
• Gołaszewski J., Szwabowski J.: Influence of superplasticizers on rheological behaviour of fresh cement mortars. Cement and Concrete Research 34 (2004), 235-248. http://dx.doi.org/10.1016/j.cemconres.2003.07.002
• Griesser A.: Cement-Superplasticizer Interactions at Ambient Temperatures. Swiss Federal Institute of Technology, Zurich, 2002.
• Grzeszczyk S., Sudoł M.: Influence of temperature on efficiency of new generation superplasticizer (in Polish). Cement Wapno Beton 6 (2003), 325-331.
• Hampton J.: Extended workability of concrete containing high-range water-reducing admixtures in hot weather. In “Development in the Use of Superplasticizers”, ACI Special Publication SP 68, Detroit, USA, 1981, 409-422.
• Jackiewicz-Rek W., Łukowski P.: Effect of high temperature of cement on the properties of mortars (in Polish). 6th Conference MATBUD‘2011, Cracov, Poland, 2011, 166-174.
• Jolicoeur C., Sharman J., Otis N., Lebel A., Simard M., Page M.: 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, Rome, Italy, 1997, 379-405.
• Kaleta A., Grzeszczyk S.: The influence of chosen factors on the rheological properties of cement paste. Procedia Engineering 108 (2015), 568-574. http://dx.doi.org/10.1016/j.proeng.2015.06.179
• Kosmatka S., Kerkhoff B., Panarese W.: Design and control of concrete mixtures, 14th edition, Portland Cement Association, 2003.
• Kurdowski W.: Cement and concrete chemistry. Springer, 2014.
• Łukowski P.: Admixtures for mortars and concretes (in Polish). Polish Cement Association, Cracov, 2003.
• Łukowski P.: Material modification of concrete (in Polish). Polish Cement Association, Cracov, 2016.
• 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, Nice, France, 2000, 195-210.
• Nehdi M., Al Martini S.: Estimating time and temperature dependent yield stress of cement paste using oscillatory rheology and genetic algorithms. Cement and Concrete Research 39 (2009), 1007-1016. http://dx.doi.org/10.1016/j.cemconres.2009.07.011
• Petit J., Khayat K., 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. http://dx.doi.org/10.1016/j.cemconres.2005.11.001
• Petit J., Wirquin E., Khayat K.: Effect of temperature on the rheology of flowable mortars. Cement and Concrete Composites 32 (2010), 43-53. http://dx.doi.org/10.1016/j.cemconcomp.2009.10.003
• Ridi F., Fratini E., Alfani R., Baglioni P.: Influence of acrylic superplasticizer and cellulose-ether on the kinetics of tricalcium silicate hydration reaction. Journal of Colloid and Interface Science 395 (2013), 68-74. http://dx.doi.org/10.1016/j.jcis.2012.12.048
• Schmidt W.: Design concepts for the robustness improvement of Self-Compacting Concrete – Effects of admixtures and mixture components on the rheology and early hydration at varying temperatures. PhD Thesis, Eindhoven University of Technology, the Netherlands, 2014.
• Schmidt W., Brouwers H.J.H., Kühne H., Meng B.: Influences of superplasticizer modification and mixture composition on the performance of self-compacting concrete at varied ambient temperatures. Cement and Concrete Composites 49 (2014), 111-126. http://dx.doi.org/10.1016/j.cemconcomp.2013.12.004
• 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,

Uwagi

PL

Opracowanie ze środków MNiSW w ramach umowy 812/P-DUN/2016 na działalność upowszechniającą naukę.