Methods Development for the Constrained Elastic Modulus Investigation of Organic Material in Natural Soil Conditions

Compressibility is one of the most important mechanical properties of soil. The parameter that characterizes compressibility is the constrained modulus of elasticity. Knowledge of this is important to calculate the settlement of a structure foundation on peat material. According to soil classificati...

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Autores principales:	Zygmunt Meyer, Magdalena Olszewska
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	constrained modulus modulus of elasticity peat compressibility of organic soil Technology T Electrical engineering. Electronics. Nuclear engineering TK1-9971 Engineering (General). Civil engineering (General) TA1-2040 Microscopy QH201-278.5 Descriptive and experimental mechanics QC120-168.85
Acceso en línea:	https://doaj.org/article/241ff76889f644828e3fc17aaacede35
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spelling	oai:doaj.org-article:241ff76889f644828e3fc17aaacede352021-11-25T18:14:03ZMethods Development for the Constrained Elastic Modulus Investigation of Organic Material in Natural Soil Conditions10.3390/ma142268421996-1944https://doaj.org/article/241ff76889f644828e3fc17aaacede352021-11-01T00:00:00Zhttps://www.mdpi.com/1996-1944/14/22/6842https://doaj.org/toc/1996-1944Compressibility is one of the most important mechanical properties of soil. The parameter that characterizes compressibility is the constrained modulus of elasticity. Knowledge of this is important to calculate the settlement of a structure foundation on peat material. According to soil classification by EN ISO 14688-2, peat is an organic soil that contains min. 20% organic matter. It is a highly organic type of soil. Peat material has large compressibility. The value of the constrained elasticity modulus for peat is ca. 400 kPa, while it may be ca 1.0–1.6 MPa for consolidated peat. Due to the extensive range of the modulus, experimental research in this field is proposed. It is suggested to load the peat material layer with an embankment and to determine its total settlement. Based on this, a program was developed to determine the settlement–strain relationship. The authors propose an approach according to two models: the first is based on constant stress distribution in the soil with an oedometer test. The second considers the variability of stresses in the soil and the influence of the loaded area. Both methods were tested based on numerical simulations, and then an experimental field in Szczecin was used. The formulae for the constrained modulus of elasticity measurement were derived; in practical conditions, a uniaxial deformation state can be used with the combination of the total settlement.Zygmunt MeyerMagdalena OlszewskaMDPI AGarticleconstrained modulusmodulus of elasticitypeatcompressibility of organic soilTechnologyTElectrical engineering. Electronics. Nuclear engineeringTK1-9971Engineering (General). Civil engineering (General)TA1-2040MicroscopyQH201-278.5Descriptive and experimental mechanicsQC120-168.85ENMaterials, Vol 14, Iss 6842, p 6842 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	constrained modulus modulus of elasticity peat compressibility of organic soil Technology T Electrical engineering. Electronics. Nuclear engineering TK1-9971 Engineering (General). Civil engineering (General) TA1-2040 Microscopy QH201-278.5 Descriptive and experimental mechanics QC120-168.85
spellingShingle	constrained modulus modulus of elasticity peat compressibility of organic soil Technology T Electrical engineering. Electronics. Nuclear engineering TK1-9971 Engineering (General). Civil engineering (General) TA1-2040 Microscopy QH201-278.5 Descriptive and experimental mechanics QC120-168.85 Zygmunt Meyer Magdalena Olszewska Methods Development for the Constrained Elastic Modulus Investigation of Organic Material in Natural Soil Conditions
description	Compressibility is one of the most important mechanical properties of soil. The parameter that characterizes compressibility is the constrained modulus of elasticity. Knowledge of this is important to calculate the settlement of a structure foundation on peat material. According to soil classification by EN ISO 14688-2, peat is an organic soil that contains min. 20% organic matter. It is a highly organic type of soil. Peat material has large compressibility. The value of the constrained elasticity modulus for peat is ca. 400 kPa, while it may be ca 1.0–1.6 MPa for consolidated peat. Due to the extensive range of the modulus, experimental research in this field is proposed. It is suggested to load the peat material layer with an embankment and to determine its total settlement. Based on this, a program was developed to determine the settlement–strain relationship. The authors propose an approach according to two models: the first is based on constant stress distribution in the soil with an oedometer test. The second considers the variability of stresses in the soil and the influence of the loaded area. Both methods were tested based on numerical simulations, and then an experimental field in Szczecin was used. The formulae for the constrained modulus of elasticity measurement were derived; in practical conditions, a uniaxial deformation state can be used with the combination of the total settlement.
format	article
author	Zygmunt Meyer Magdalena Olszewska
author_facet	Zygmunt Meyer Magdalena Olszewska
author_sort	Zygmunt Meyer
title	Methods Development for the Constrained Elastic Modulus Investigation of Organic Material in Natural Soil Conditions
title_short	Methods Development for the Constrained Elastic Modulus Investigation of Organic Material in Natural Soil Conditions
title_full	Methods Development for the Constrained Elastic Modulus Investigation of Organic Material in Natural Soil Conditions
title_fullStr	Methods Development for the Constrained Elastic Modulus Investigation of Organic Material in Natural Soil Conditions
title_full_unstemmed	Methods Development for the Constrained Elastic Modulus Investigation of Organic Material in Natural Soil Conditions
title_sort	methods development for the constrained elastic modulus investigation of organic material in natural soil conditions
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/241ff76889f644828e3fc17aaacede35
work_keys_str_mv	AT zygmuntmeyer methodsdevelopmentfortheconstrainedelasticmodulusinvestigationoforganicmaterialinnaturalsoilconditions AT magdalenaolszewska methodsdevelopmentfortheconstrainedelasticmodulusinvestigationoforganicmaterialinnaturalsoilconditions
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Methods Development for the Constrained Elastic Modulus Investigation of Organic Material in Natural Soil Conditions

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