Long-term properties of cement mortar under compression, tension, and 3-point bending

Cement composite long-term property assessment usually is limited to the compression strain state due to the difficulty of performing long-term tests in tension and 3-point bending. This paper shows the difference in long-term properties in compression, tension, and 3-point bending for plain ordinar...

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Autores principales:	Sprince Andina, Gailitis Rihards, Pakrastins Leonids, Kozlovskis Tomass, Vatin Nikolai
Formato:	article
Lenguaje:	EN
Publicado:	Peter the Great St. Petersburg Polytechnic University 2021
Materias:	long-term properties creep shrinkage compression tension 3-point bending digital image correlation pva fibre opc mortar Engineering (General). Civil engineering (General) TA1-2040
Acceso en línea:	https://doaj.org/article/1acad8f33f3345a0a649e533ebd5635b
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spelling	oai:doaj.org-article:1acad8f33f3345a0a649e533ebd5635b2021-11-12T15:54:04ZLong-term properties of cement mortar under compression, tension, and 3-point bending2712-817210.34910/MCE.105.11https://doaj.org/article/1acad8f33f3345a0a649e533ebd5635b2021-09-01T00:00:00Zhttp://engstroy.spbstu.ru/article/2021.105.11/https://doaj.org/toc/2712-8172Cement composite long-term property assessment usually is limited to the compression strain state due to the difficulty of performing long-term tests in tension and 3-point bending. This paper shows the difference in long-term properties in compression, tension, and 3-point bending for plain ordinary Portland cement mortar (OPC). The obtained results were compared to reinforced specimen results to determine whether the PVA refibres improve the long-term properties of OPC mortar in various stress-strain conditions. Cylinders, compact tension specimens (CT), and beams – plates were prepared to evaluate material properties and the role of fibre reinforcement in these different stress states. Additionally, to conventional surface-attached strain gauges, 2D-DIC was employed to observe the creep strain of specimens in tension. This paper aim to determine long-term property differences in compression, tension and 3-point bending and, also, to see if low amount PVA fibre incorporation improve long-term properties in previously stated stress-strain states. It was determined that the usage of 1 % of PVA fibres increases creep strains in compression on average by 15 % and reduced by 7 % in tension. It reduces shrinkage strain by 18 % in compression and 8 % in tension. The long-term deflection for the PVA fibre-reinforced specimens are, on average by 55 % higher than for plain OPC mortar specimens in 3-point bending.Sprince AndinaGailitis RihardsPakrastins LeonidsKozlovskis TomassVatin NikolaiPeter the Great St. Petersburg Polytechnic Universityarticlelong-term propertiescreepshrinkagecompressiontension3-point bendingdigital image correlationpva fibreopc mortarEngineering (General). Civil engineering (General)TA1-2040ENMagazine of Civil Engineering, Vol None, Iss 05 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	long-term properties creep shrinkage compression tension 3-point bending digital image correlation pva fibre opc mortar Engineering (General). Civil engineering (General) TA1-2040
spellingShingle	long-term properties creep shrinkage compression tension 3-point bending digital image correlation pva fibre opc mortar Engineering (General). Civil engineering (General) TA1-2040 Sprince Andina Gailitis Rihards Pakrastins Leonids Kozlovskis Tomass Vatin Nikolai Long-term properties of cement mortar under compression, tension, and 3-point bending
description	Cement composite long-term property assessment usually is limited to the compression strain state due to the difficulty of performing long-term tests in tension and 3-point bending. This paper shows the difference in long-term properties in compression, tension, and 3-point bending for plain ordinary Portland cement mortar (OPC). The obtained results were compared to reinforced specimen results to determine whether the PVA refibres improve the long-term properties of OPC mortar in various stress-strain conditions. Cylinders, compact tension specimens (CT), and beams – plates were prepared to evaluate material properties and the role of fibre reinforcement in these different stress states. Additionally, to conventional surface-attached strain gauges, 2D-DIC was employed to observe the creep strain of specimens in tension. This paper aim to determine long-term property differences in compression, tension and 3-point bending and, also, to see if low amount PVA fibre incorporation improve long-term properties in previously stated stress-strain states. It was determined that the usage of 1 % of PVA fibres increases creep strains in compression on average by 15 % and reduced by 7 % in tension. It reduces shrinkage strain by 18 % in compression and 8 % in tension. The long-term deflection for the PVA fibre-reinforced specimens are, on average by 55 % higher than for plain OPC mortar specimens in 3-point bending.
format	article
author	Sprince Andina Gailitis Rihards Pakrastins Leonids Kozlovskis Tomass Vatin Nikolai
author_facet	Sprince Andina Gailitis Rihards Pakrastins Leonids Kozlovskis Tomass Vatin Nikolai
author_sort	Sprince Andina
title	Long-term properties of cement mortar under compression, tension, and 3-point bending
title_short	Long-term properties of cement mortar under compression, tension, and 3-point bending
title_full	Long-term properties of cement mortar under compression, tension, and 3-point bending
title_fullStr	Long-term properties of cement mortar under compression, tension, and 3-point bending
title_full_unstemmed	Long-term properties of cement mortar under compression, tension, and 3-point bending
title_sort	long-term properties of cement mortar under compression, tension, and 3-point bending
publisher	Peter the Great St. Petersburg Polytechnic University
publishDate	2021
url	https://doaj.org/article/1acad8f33f3345a0a649e533ebd5635b
work_keys_str_mv	AT sprinceandina longtermpropertiesofcementmortarundercompressiontensionand3pointbending AT gailitisrihards longtermpropertiesofcementmortarundercompressiontensionand3pointbending AT pakrastinsleonids longtermpropertiesofcementmortarundercompressiontensionand3pointbending AT kozlovskistomass longtermpropertiesofcementmortarundercompressiontensionand3pointbending AT vatinnikolai longtermpropertiesofcementmortarundercompressiontensionand3pointbending
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Long-term properties of cement mortar under compression, tension, and 3-point bending

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