Study on the Fatigue and Durability Behavior of Structural Expanded Polystyrene Concretes
The fatigue and durability characteristics of structural expanded polystyrene concrete (EPS) are especially important when it was applied for structural elements in long-term service. In order to study the fatigue and durability behavior of structural EPS concrete, the long-term cyclic loading exper...
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doaj-5f9f39a20fd2414aba3e1c0f1813297d2020-11-25T01:22:45ZengMDPI AGMaterials1996-19442019-09-011218288210.3390/ma12182882ma12182882Study on the Fatigue and Durability Behavior of Structural Expanded Polystyrene ConcretesQuan You0Linchang Miao1Chao Li2Huanglei Fang3Xiaodong Liang4Institute of Geotechnical Engineering, Southeast University, Nanjing 210096, ChinaInstitute of Geotechnical Engineering, Southeast University, Nanjing 210096, ChinaInstitute of Geotechnical Engineering, Southeast University, Nanjing 210096, ChinaInstitute of Geotechnical Engineering, Southeast University, Nanjing 210096, ChinaInstitute of Geotechnical Engineering, Southeast University, Nanjing 210096, ChinaThe fatigue and durability characteristics of structural expanded polystyrene concrete (EPS) are especially important when it was applied for structural elements in long-term service. In order to study the fatigue and durability behavior of structural EPS concrete, the long-term cyclic loading experiments and wetting−drying (W-D) cyclic experiments were conducted, respectively. The structural EPS concrete was found to have a relatively large damping and a fairly low dynamic elastic modulus under long-term cyclic load, which illustrated that it had a better energy absorption effect and toughness than plain concrete of the same strength level. Even if fine cracks appeared during the cyclic loading process, the relevant dynamic performance remained stable, which indicated that the structural EPS concrete had superior fatigue stability. In W-D cyclic experiments, the structural EPS concrete exhibited superior sulfate resistance. During the erosion test process, there was a positive correlation between the mass change and the evolution of the compressive strength of the structural EPS concrete, which indicated that Δm<sub>B</sub> could be substituted for Δf to evaluate the degree of the structural EPS concrete eroded by sulfate attack. The study focuses on the fatigue performance and sulfate resistance of structural EPS concrete and is of important engineering value for promoting practical long-term operations.https://www.mdpi.com/1996-1944/12/18/2882structural expanded polystyrene (EPS) concretelong-term cyclic loadingdamping ratiodynamic elastic modulussulfate resistance |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Quan You Linchang Miao Chao Li Huanglei Fang Xiaodong Liang |
spellingShingle |
Quan You Linchang Miao Chao Li Huanglei Fang Xiaodong Liang Study on the Fatigue and Durability Behavior of Structural Expanded Polystyrene Concretes Materials structural expanded polystyrene (EPS) concrete long-term cyclic loading damping ratio dynamic elastic modulus sulfate resistance |
author_facet |
Quan You Linchang Miao Chao Li Huanglei Fang Xiaodong Liang |
author_sort |
Quan You |
title |
Study on the Fatigue and Durability Behavior of Structural Expanded Polystyrene Concretes |
title_short |
Study on the Fatigue and Durability Behavior of Structural Expanded Polystyrene Concretes |
title_full |
Study on the Fatigue and Durability Behavior of Structural Expanded Polystyrene Concretes |
title_fullStr |
Study on the Fatigue and Durability Behavior of Structural Expanded Polystyrene Concretes |
title_full_unstemmed |
Study on the Fatigue and Durability Behavior of Structural Expanded Polystyrene Concretes |
title_sort |
study on the fatigue and durability behavior of structural expanded polystyrene concretes |
publisher |
MDPI AG |
series |
Materials |
issn |
1996-1944 |
publishDate |
2019-09-01 |
description |
The fatigue and durability characteristics of structural expanded polystyrene concrete (EPS) are especially important when it was applied for structural elements in long-term service. In order to study the fatigue and durability behavior of structural EPS concrete, the long-term cyclic loading experiments and wetting−drying (W-D) cyclic experiments were conducted, respectively. The structural EPS concrete was found to have a relatively large damping and a fairly low dynamic elastic modulus under long-term cyclic load, which illustrated that it had a better energy absorption effect and toughness than plain concrete of the same strength level. Even if fine cracks appeared during the cyclic loading process, the relevant dynamic performance remained stable, which indicated that the structural EPS concrete had superior fatigue stability. In W-D cyclic experiments, the structural EPS concrete exhibited superior sulfate resistance. During the erosion test process, there was a positive correlation between the mass change and the evolution of the compressive strength of the structural EPS concrete, which indicated that Δm<sub>B</sub> could be substituted for Δf to evaluate the degree of the structural EPS concrete eroded by sulfate attack. The study focuses on the fatigue performance and sulfate resistance of structural EPS concrete and is of important engineering value for promoting practical long-term operations. |
topic |
structural expanded polystyrene (EPS) concrete long-term cyclic loading damping ratio dynamic elastic modulus sulfate resistance |
url |
https://www.mdpi.com/1996-1944/12/18/2882 |
work_keys_str_mv |
AT quanyou studyonthefatigueanddurabilitybehaviorofstructuralexpandedpolystyreneconcretes AT linchangmiao studyonthefatigueanddurabilitybehaviorofstructuralexpandedpolystyreneconcretes AT chaoli studyonthefatigueanddurabilitybehaviorofstructuralexpandedpolystyreneconcretes AT huangleifang studyonthefatigueanddurabilitybehaviorofstructuralexpandedpolystyreneconcretes AT xiaodongliang studyonthefatigueanddurabilitybehaviorofstructuralexpandedpolystyreneconcretes |
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