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Characteristics of Lightweight Concrete Based on a Synthetic Polymer Foaming Agent.

Authors
  • Kadela, Marta1
  • Kukiełka, Alfred1
  • Małek, Marcin2
  • 1 Building Research Institute (ITB), ul. Filtrowa 1, 00-611 Warsaw, Poland. , (Poland)
  • 2 Faculty of Civil Engineering and Geodesy, Military University of Technology, ul. Gen. Sylwestra Kaliskiego 2, 01-476 Warsaw, Poland. , (Poland)
Type
Published Article
Journal
Materials
Publisher
MDPI AG
Publication Date
Nov 05, 2020
Volume
13
Issue
21
Identifiers
DOI: 10.3390/ma13214979
PMID: 33167446
Source
Medline
Keywords
Language
English
License
Unknown

Abstract

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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