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The relation between concrete, mortar and paste scale early age properties
Microstructure development of concrete, mortar, and paste scale of cement-based material (CBM) during the early hydration stage has a significant impact on CBM%s physical, mechanical, and durability characteristics at the high maturity state. The research was carried out using compositions with increased autogenous shrinkage and extended early age period, proposed within the RRT+ programme of the COST Action TU1404. The electrical conductivity method, used to follow the solidification process of CBM, is capable of determining the initial and final setting time, and the end of the solidification process acceleration stage for the paste and mortar scale. Simultaneous ultrasonic P- and S-wave transmission measurements revealed that the ratio of velocities VP/VS is highly dependent on the presence of aggregates%it is considerably higher for the paste scale compared to the mortar and concrete scale. The deviation from the otherwise roughly constant ratio VP/VS for each scale may indicate cracks in the material. The non-linear correlation between the dynamic and static elastic moduli valid over the three scales was confirmed. Additionally, it was found that the static E-modulus correlates very well with the square of the VS and that the VS is highly correlated to the cube compressive strength%but a separate trendline exists for each CBM scale.
The relation between concrete, mortar and paste scale early age properties
Microstructure development of concrete, mortar, and paste scale of cement-based material (CBM) during the early hydration stage has a significant impact on CBM%s physical, mechanical, and durability characteristics at the high maturity state. The research was carried out using compositions with increased autogenous shrinkage and extended early age period, proposed within the RRT+ programme of the COST Action TU1404. The electrical conductivity method, used to follow the solidification process of CBM, is capable of determining the initial and final setting time, and the end of the solidification process acceleration stage for the paste and mortar scale. Simultaneous ultrasonic P- and S-wave transmission measurements revealed that the ratio of velocities VP/VS is highly dependent on the presence of aggregates%it is considerably higher for the paste scale compared to the mortar and concrete scale. The deviation from the otherwise roughly constant ratio VP/VS for each scale may indicate cracks in the material. The non-linear correlation between the dynamic and static elastic moduli valid over the three scales was confirmed. Additionally, it was found that the static E-modulus correlates very well with the square of the VS and that the VS is highly correlated to the cube compressive strength%but a separate trendline exists for each CBM scale.
The relation between concrete, mortar and paste scale early age properties
Klun, Martin (author) / Bosiljkov, Vlatko (author) / Bokan-Bosiljkov, Violeta (author)
2021-05-31
Materials, vol. 14, no. 6, pp. 1-24, 2021. ; ISSN: 1996-1944
Paper
Electronic Resource
English
ultrasonic method , info:eu-repo/classification/udc/620.1:691 , zgodnja starost , standard test , razvoj mikrostrukture , standardni testi , beton , concrete , microstructure development , ultrazvočna metoda , early hydration stage , mortar and paste scale of cement-based material , nivo malte in paste v betonu , električna prevodnost , electrical conductivity
DDC:
690
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Dynamic properties of hardened paste, mortar and concrete
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Miniseminar on Early Volume Change and Reactions in Paste-Mortar-Concrete
| British Library Online Contents | 1997
On the Correlation Between Rheology of Paste, Mortar and Concrete
| British Library Conference Proceedings | 2005