Effect of Absorptivity of Superabsorbent Polymers on Design of Cement Mortars
1
Faculty of Civil Engineering, Czech Technical University in Prague, Thákurova 7, 16629 Prague, Czech Republic
2
Faculty of Chemical Engineering and Technology, Cracow University of Technology, Warszawska 24, 31155 Cracow, Poland
*
Author to whom correspondence should be addressed.
Materials 2020, 13(23), 5503; https://doi.org/10.3390/ma13235503
Received: 26 October 2020
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Revised: 25 November 2020
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Accepted: 30 November 2020
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Published: 2 December 2020
(This article belongs to the Special Issue Material Science in Transportation and Construction Engineering)
The functional properties of composites modified by superabsorbent polymers (SAPs) strongly depend on the swelling capacity of applied SAPs. In this sense, three types of commercially available SAPs namely Cablock CT, Hydropam, and Creasorb SIS with different chemical composition and particle size distribution were studied in this manuscript to reveal the differences in absorptivity as can be viewed as pretests for their utilization in concrete composites. In addition, absorptivity in distilled water, tap water, and 0.1 M NaCl solution are examined for determining the SAPs response for the change of the solution pH. To overcome problems with the teabag method inaccuracy, the new method is introduced. Besides to quantitative evaluation of the SAPs absorptivity, the correlation for the absorption and desorption period as the function of SAPs residence time within the examined solution is proposed. To access the effect of selected SAPs on functional properties, optimization based on the flow table test is employed and mechanical parameters are determined after 7, 14, 28, and 90 days of curing. Obtained results refer to substantial differences between particular SAPs and contribute to the understanding of the effect of SAP on the functional properties of cement-based materials.
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Keywords:
superabsorbent polymer (SAP); absorptivity; teabag method; filtration method; mechanical performance; flow table test
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MDPI and ACS Style
Fořt, J.; Migas, P.; Černý, R. Effect of Absorptivity of Superabsorbent Polymers on Design of Cement Mortars. Materials 2020, 13, 5503. https://doi.org/10.3390/ma13235503
AMA Style
Fořt J, Migas P, Černý R. Effect of Absorptivity of Superabsorbent Polymers on Design of Cement Mortars. Materials. 2020; 13(23):5503. https://doi.org/10.3390/ma13235503
Chicago/Turabian StyleFořt, Jan, Przemysław Migas, and Robert Černý. 2020. "Effect of Absorptivity of Superabsorbent Polymers on Design of Cement Mortars" Materials 13, no. 23: 5503. https://doi.org/10.3390/ma13235503
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