Sample dimension effect on equations controlling tensile and compressive strength of cement-stabilized sandy soil under optimal compaction conditions

The porosity/cement ratio (η/Civ) has been applied as a key parameter for the understanding of tensile and compressive strengths of a wide range of soils-cement mixtures, although the focus has been restricted to non-optimal compaction condition, which does not fully reflect the field execution proc...

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Autores principales:	José Wilson dos Santos Ferreira, Michéle Dal Toé Casagrande, Raquel Souza Teixeira
Formato:	article
Lenguaje:	EN
Publicado:	Elsevier 2021
Materias:	Compressive strength Indirect tensile strength Soil-cement Porosity/cement ratio Optimal condition of compaction Materials of engineering and construction. Mechanics of materials TA401-492
Acceso en línea:	https://doaj.org/article/c4c5375d5fa74636826eab98ecd40f62
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spelling	oai:doaj.org-article:c4c5375d5fa74636826eab98ecd40f622021-11-12T04:34:38ZSample dimension effect on equations controlling tensile and compressive strength of cement-stabilized sandy soil under optimal compaction conditions2214-509510.1016/j.cscm.2021.e00763https://doaj.org/article/c4c5375d5fa74636826eab98ecd40f622021-12-01T00:00:00Zhttp://www.sciencedirect.com/science/article/pii/S2214509521002783https://doaj.org/toc/2214-5095The porosity/cement ratio (η/Civ) has been applied as a key parameter for the understanding of tensile and compressive strengths of a wide range of soils-cement mixtures, although the focus has been restricted to non-optimal compaction condition, which does not fully reflect the field execution process. Also, distinct sample dimensions have been utilized in the research area without taking this effect into account. Recognizing these needs, this study aims to evaluate the sample dimension effect on the equations controlling the mechanical behavior by η/Civ, under optimal compaction conditions. Using sandy soil, Unconfined Compressive Strength (UCS or qu) and Indirect Tensile Strength (ITS or qt) tests were performed from distinct curing period, cement type and content, based on conventional (127×100 mm) and reduced dimension (105×50 mm) specimens. The addition of both cements did not show significant variations in compaction parameters, which affected the η-qu and η-qt relations. The use of η/Civ ratio proved to be a suitable parameter for dosing, considering both sample dimensions under optimal compaction conditions. A unique exponent related to the increment of qu and qt along 7 and 28 curing days was obtained by each cement type, regardless of the sample dimension, leading to an average of 0.13 qt/qu relationship. Finally, mixtures molded in reduced dimension showed 20% higher strengths when compared to conventional dimension, despite the cement type and content, porosity, and curing period.José Wilson dos Santos FerreiraMichéle Dal Toé CasagrandeRaquel Souza TeixeiraElsevierarticleCompressive strengthIndirect tensile strengthSoil-cementPorosity/cement ratioOptimal condition of compactionMaterials of engineering and construction. Mechanics of materialsTA401-492ENCase Studies in Construction Materials, Vol 15, Iss , Pp e00763- (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Compressive strength Indirect tensile strength Soil-cement Porosity/cement ratio Optimal condition of compaction Materials of engineering and construction. Mechanics of materials TA401-492
spellingShingle	Compressive strength Indirect tensile strength Soil-cement Porosity/cement ratio Optimal condition of compaction Materials of engineering and construction. Mechanics of materials TA401-492 José Wilson dos Santos Ferreira Michéle Dal Toé Casagrande Raquel Souza Teixeira Sample dimension effect on equations controlling tensile and compressive strength of cement-stabilized sandy soil under optimal compaction conditions
description	The porosity/cement ratio (η/Civ) has been applied as a key parameter for the understanding of tensile and compressive strengths of a wide range of soils-cement mixtures, although the focus has been restricted to non-optimal compaction condition, which does not fully reflect the field execution process. Also, distinct sample dimensions have been utilized in the research area without taking this effect into account. Recognizing these needs, this study aims to evaluate the sample dimension effect on the equations controlling the mechanical behavior by η/Civ, under optimal compaction conditions. Using sandy soil, Unconfined Compressive Strength (UCS or qu) and Indirect Tensile Strength (ITS or qt) tests were performed from distinct curing period, cement type and content, based on conventional (127×100 mm) and reduced dimension (105×50 mm) specimens. The addition of both cements did not show significant variations in compaction parameters, which affected the η-qu and η-qt relations. The use of η/Civ ratio proved to be a suitable parameter for dosing, considering both sample dimensions under optimal compaction conditions. A unique exponent related to the increment of qu and qt along 7 and 28 curing days was obtained by each cement type, regardless of the sample dimension, leading to an average of 0.13 qt/qu relationship. Finally, mixtures molded in reduced dimension showed 20% higher strengths when compared to conventional dimension, despite the cement type and content, porosity, and curing period.
format	article
author	José Wilson dos Santos Ferreira Michéle Dal Toé Casagrande Raquel Souza Teixeira
author_facet	José Wilson dos Santos Ferreira Michéle Dal Toé Casagrande Raquel Souza Teixeira
author_sort	José Wilson dos Santos Ferreira
title	Sample dimension effect on equations controlling tensile and compressive strength of cement-stabilized sandy soil under optimal compaction conditions
title_short	Sample dimension effect on equations controlling tensile and compressive strength of cement-stabilized sandy soil under optimal compaction conditions
title_full	Sample dimension effect on equations controlling tensile and compressive strength of cement-stabilized sandy soil under optimal compaction conditions
title_fullStr	Sample dimension effect on equations controlling tensile and compressive strength of cement-stabilized sandy soil under optimal compaction conditions
title_full_unstemmed	Sample dimension effect on equations controlling tensile and compressive strength of cement-stabilized sandy soil under optimal compaction conditions
title_sort	sample dimension effect on equations controlling tensile and compressive strength of cement-stabilized sandy soil under optimal compaction conditions
publisher	Elsevier
publishDate	2021
url	https://doaj.org/article/c4c5375d5fa74636826eab98ecd40f62
work_keys_str_mv	AT josewilsondossantosferreira sampledimensioneffectonequationscontrollingtensileandcompressivestrengthofcementstabilizedsandysoilunderoptimalcompactionconditions AT micheledaltoecasagrande sampledimensioneffectonequationscontrollingtensileandcompressivestrengthofcementstabilizedsandysoilunderoptimalcompactionconditions AT raquelsouzateixeira sampledimensioneffectonequationscontrollingtensileandcompressivestrengthofcementstabilizedsandysoilunderoptimalcompactionconditions
_version_	1718431256852561920

Sample dimension effect on equations controlling tensile and compressive strength of cement-stabilized sandy soil under optimal compaction conditions

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