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 incr...
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MDPI AG
2021-03-01
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| Online Access: | https://www.mdpi.com/1996-1944/14/6/1569 |
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| author | Martin Klun Vlatko Bosiljkov Violeta Bokan-Bosiljkov |
| author_facet | Martin Klun Vlatko Bosiljkov Violeta Bokan-Bosiljkov |
| author_sort | Martin Klun |
| collection | DOAJ |
| description | 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<sup>+</sup> 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 <i>V<sub>P</sub></i>/<i>V<sub>S</sub></i> 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 <i>V<sub>P</sub></i>/<i>V<sub>S</sub></i> 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 <i>V<sub>S</sub></i> and that the <i>V<sub>S</sub></i> is highly correlated to the cube compressive strength—but a separate trendline exists for each CBM scale. |
| first_indexed | 2024-03-10T12:59:21Z |
| format | Article |
| id | doaj.art-cd091c4018c742299c63c8c69079b739 |
| institution | Directory Open Access Journal |
| issn | 1996-1944 |
| language | English |
| last_indexed | 2024-03-10T12:59:21Z |
| publishDate | 2021-03-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Materials |
| spelling | doaj.art-cd091c4018c742299c63c8c69079b7392023-11-21T11:41:57ZengMDPI AGMaterials1996-19442021-03-01146156910.3390/ma14061569The Relation between Concrete, Mortar and Paste Scale Early Age PropertiesMartin Klun0Vlatko Bosiljkov1Violeta Bokan-Bosiljkov2Faculty of Civil and Geodetic Engineering, University of Ljubljana, Jamova 2, SI-1000 Ljubljana, SloveniaFaculty of Civil and Geodetic Engineering, University of Ljubljana, Jamova 2, SI-1000 Ljubljana, SloveniaFaculty of Civil and Geodetic Engineering, University of Ljubljana, Jamova 2, SI-1000 Ljubljana, SloveniaMicrostructure 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<sup>+</sup> 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 <i>V<sub>P</sub></i>/<i>V<sub>S</sub></i> 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 <i>V<sub>P</sub></i>/<i>V<sub>S</sub></i> 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 <i>V<sub>S</sub></i> and that the <i>V<sub>S</sub></i> is highly correlated to the cube compressive strength—but a separate trendline exists for each CBM scale.https://www.mdpi.com/1996-1944/14/6/1569concretemortar and paste scale of cement-based materialearly hydration stagemicrostructure developmentelectrical conductivityultrasonic method |
| spellingShingle | Martin Klun Vlatko Bosiljkov Violeta Bokan-Bosiljkov The Relation between Concrete, Mortar and Paste Scale Early Age Properties Materials concrete mortar and paste scale of cement-based material early hydration stage microstructure development electrical conductivity ultrasonic method |
| title | The Relation between Concrete, Mortar and Paste Scale Early Age Properties |
| title_full | The Relation between Concrete, Mortar and Paste Scale Early Age Properties |
| title_fullStr | The Relation between Concrete, Mortar and Paste Scale Early Age Properties |
| title_full_unstemmed | The Relation between Concrete, Mortar and Paste Scale Early Age Properties |
| title_short | The Relation between Concrete, Mortar and Paste Scale Early Age Properties |
| title_sort | relation between concrete mortar and paste scale early age properties |
| topic | concrete mortar and paste scale of cement-based material early hydration stage microstructure development electrical conductivity ultrasonic method |
| url | https://www.mdpi.com/1996-1944/14/6/1569 |
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