Детальная информация
Название | Long-term properties of cement mortar under compression, tension, and 3-point bending // Magazine of Civil Engineering. – 2021. – № 5 (105). — С. 10511 |
---|---|
Авторы | Sprince A.; Gailitis R.; Pakrastins L.; Kozlovskis T.; Vatin N. |
Выходные сведения | 2021 |
Коллекция | Общая коллекция |
Тематика | Строительство; Строительные материалы и изделия; cement mortars; properties of cement mortars; long-term properties of cement mortars; compression of solutions; stretching of solutions; three-point bends; цементные растворы; свойства цементных растворов; долговременные свойства цементных растворов; сжатие растворов; растяжение растворов; трехточечные изгибы |
УДК | 691 |
ББК | 38.3 |
Тип документа | Статья, доклад |
Тип файла | |
Язык | Английский |
DOI | 10.34910/MCE.105.11 |
Права доступа | Свободный доступ из сети Интернет (чтение, печать, копирование) |
Ключ записи | ru\spstu\analitstest\28008 |
Дата создания записи | 29.12.2021 |
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.
Количество обращений: 249
За последние 30 дней: 3