Characteristics of Lightweight Concrete Based on a Synthetic Polymer Foaming Agent
1
Building Research Institute (ITB), ul. Filtrowa 1, 00-611 Warsaw, Poland
2
Faculty of Civil Engineering and Geodesy, Military University of Technology, ul. Gen. Sylwestra Kaliskiego 2, 01-476 Warsaw, Poland
*
Author to whom correspondence should be addressed.
Materials 2020, 13(21), 4979; https://doi.org/10.3390/ma13214979
Received: 28 September 2020
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Revised: 21 October 2020
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Accepted: 3 November 2020
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Published: 5 November 2020
(This article belongs to the Special Issue Polymer in/on Concrete)
The components of foamed concrete have a significant effect on its properties. Protein-based foamed concrete is used much more often. This study aims to assess the properties of foamed concrete with a density of around 500, 700, 800 and 1000 kg/m3 formed by using a synthetic polymer-based foaming agent. The distribution of pores, wet and dry density and compressive strengths were evaluated. In addition, the creep deformations of foamed concrete with different densities were measured. The difference in density of up to 170 kg/m3 for the highest densities was obtained. Foamed concrete with higher densities (700 and 800 kg/m3) showed similar characteristics of pores, which were different from those of samples with a density of 500 kg/m3. Compressive strength equal to 5.9 ± 0.2, 5.1 ± 0.2, 3.8 ± 0.3 and 1.4 ± 0.2 MPa was obtained for foamed concrete with a density of 500, 700, 800 and 1000 kg/m3, respectively. The obtained compressive strengths were higher than those found in the literature for the foamed concrete with the same densities. With increasing density, smaller creep deformations were obtained. Creep deformations were 509, 495 and 455 με for samples with densities of around 500, 700 and 1000 kg/m3 respectively. Deformation under long-term loading took place up to 90 days, regardless of the density of the foamed concrete.
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Keywords:
foamed concrete; lightweight cellular concrete; pore material; synthetic foaming agent; prepared foam; mechanical properties; density; air-void structure; compressive strength; creep
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MDPI and ACS Style
Kadela, M.; Kukiełka, A.; Małek, M. Characteristics of Lightweight Concrete Based on a Synthetic Polymer Foaming Agent. Materials 2020, 13, 4979. https://doi.org/10.3390/ma13214979
AMA Style
Kadela M, Kukiełka A, Małek M. Characteristics of Lightweight Concrete Based on a Synthetic Polymer Foaming Agent. Materials. 2020; 13(21):4979. https://doi.org/10.3390/ma13214979
Chicago/Turabian StyleKadela, Marta, Alfred Kukiełka, and Marcin Małek. 2020. "Characteristics of Lightweight Concrete Based on a Synthetic Polymer Foaming Agent" Materials 13, no. 21: 4979. https://doi.org/10.3390/ma13214979
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