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Influence of Paste Strength on the Strength of Expanded Polystyrene (EPS) Concrete with Different Densities
Concrete in which EPS (expanded polystyrene) particles partially or completely replace concrete aggregates is called EPS concrete. Compared to traditional concrete, EPS concrete has a controllable low density and good thermal-insulation performance, which make it promising for prospective applicatio...
Autores principales: | , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2022
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9269237/ https://www.ncbi.nlm.nih.gov/pubmed/35808580 http://dx.doi.org/10.3390/polym14132529 |
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author | He, Diyang Zheng, Wukui Chen, Zili Qi, Yongle Zhang, Dawang Li, Hui |
author_facet | He, Diyang Zheng, Wukui Chen, Zili Qi, Yongle Zhang, Dawang Li, Hui |
author_sort | He, Diyang |
collection | PubMed |
description | Concrete in which EPS (expanded polystyrene) particles partially or completely replace concrete aggregates is called EPS concrete. Compared to traditional concrete, EPS concrete has a controllable low density and good thermal-insulation performance, which make it promising for prospective applications. At present, research on EPS concrete mostly focuses on increasing its strength and EPS surface modifications. Few researchers have studied the influence of cementitious material strength and EPS-concrete density on the strength of EPS concrete. In this research, cement was used as the main material, and fly ash, silica fumes, and blast furnace slag were selected as admixtures. By changing the mixing proportions of the admixtures, the basic properties, such as the paste strength, change. Based on the mix proportions of the above different raw materials, EPS concrete with different density levels was prepared to explore the influence of the density of EPS concrete and the strength of cementitious materials on the strength of EPS concrete. The influence of the slurry strength on EPS-concrete strength was weaker than that of the density of EPS concrete. When the strength range of the cementitious materials is 35.7~70.5 MPa, the compressive strength range of 1000 kg/m(3), 1200 kg/m(3), and 1400 kg/m(3) EPS concrete is 8.8~17.6 MPa, 11.4~18.0 MPa, and 15.7~26.6 MPa, respectively. Based on the experiments, the fitting equation to determine the EPS-concrete strength–EPS-concrete density–cementitious material strength is z = 69.00087 + 0.0244x − 0.1746y − 0.00189x(2) + 0.0000504706y(2) + 0.00028401xy. Additionally, a strength-increasing design method for EPS concrete with different densities prepared by conventional Portland cement is clarified. This study can guide the preparation of EPS concrete. |
format | Online Article Text |
id | pubmed-9269237 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2022 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
spelling | pubmed-92692372022-07-09 Influence of Paste Strength on the Strength of Expanded Polystyrene (EPS) Concrete with Different Densities He, Diyang Zheng, Wukui Chen, Zili Qi, Yongle Zhang, Dawang Li, Hui Polymers (Basel) Article Concrete in which EPS (expanded polystyrene) particles partially or completely replace concrete aggregates is called EPS concrete. Compared to traditional concrete, EPS concrete has a controllable low density and good thermal-insulation performance, which make it promising for prospective applications. At present, research on EPS concrete mostly focuses on increasing its strength and EPS surface modifications. Few researchers have studied the influence of cementitious material strength and EPS-concrete density on the strength of EPS concrete. In this research, cement was used as the main material, and fly ash, silica fumes, and blast furnace slag were selected as admixtures. By changing the mixing proportions of the admixtures, the basic properties, such as the paste strength, change. Based on the mix proportions of the above different raw materials, EPS concrete with different density levels was prepared to explore the influence of the density of EPS concrete and the strength of cementitious materials on the strength of EPS concrete. The influence of the slurry strength on EPS-concrete strength was weaker than that of the density of EPS concrete. When the strength range of the cementitious materials is 35.7~70.5 MPa, the compressive strength range of 1000 kg/m(3), 1200 kg/m(3), and 1400 kg/m(3) EPS concrete is 8.8~17.6 MPa, 11.4~18.0 MPa, and 15.7~26.6 MPa, respectively. Based on the experiments, the fitting equation to determine the EPS-concrete strength–EPS-concrete density–cementitious material strength is z = 69.00087 + 0.0244x − 0.1746y − 0.00189x(2) + 0.0000504706y(2) + 0.00028401xy. Additionally, a strength-increasing design method for EPS concrete with different densities prepared by conventional Portland cement is clarified. This study can guide the preparation of EPS concrete. MDPI 2022-06-21 /pmc/articles/PMC9269237/ /pubmed/35808580 http://dx.doi.org/10.3390/polym14132529 Text en © 2022 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/). |
spellingShingle | Article He, Diyang Zheng, Wukui Chen, Zili Qi, Yongle Zhang, Dawang Li, Hui Influence of Paste Strength on the Strength of Expanded Polystyrene (EPS) Concrete with Different Densities |
title | Influence of Paste Strength on the Strength of Expanded Polystyrene (EPS) Concrete with Different Densities |
title_full | Influence of Paste Strength on the Strength of Expanded Polystyrene (EPS) Concrete with Different Densities |
title_fullStr | Influence of Paste Strength on the Strength of Expanded Polystyrene (EPS) Concrete with Different Densities |
title_full_unstemmed | Influence of Paste Strength on the Strength of Expanded Polystyrene (EPS) Concrete with Different Densities |
title_short | Influence of Paste Strength on the Strength of Expanded Polystyrene (EPS) Concrete with Different Densities |
title_sort | influence of paste strength on the strength of expanded polystyrene (eps) concrete with different densities |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9269237/ https://www.ncbi.nlm.nih.gov/pubmed/35808580 http://dx.doi.org/10.3390/polym14132529 |
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