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The relation between concrete, mortar and paste scale early age properties
ID
Klun, Martin
(
Author
),
ID
Bosiljkov, Vlatko
(
Author
),
ID
Bokan-Bosiljkov, Violeta
(
Author
)
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MD5: D1546331705B1733CBD9F6721B81F37F
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https://www.mdpi.com/1996-1944/14/6/1569
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Abstract
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 V$_P$/V$_S$ 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 V$_P$/V$_S$ 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 V$_S$ and that the V$_S$ is highly correlated to the cube compressive strength—but a separate trendline exists for each CBM scale.
Language:
English
Keywords:
concrete
,
mortar and paste scale of cement-based material
,
early hydration stage
,
microstructure development
,
electrical conductivity
,
ultrasonic method
,
standard tests
Work type:
Article
Typology:
1.01 - Original Scientific Article
Organization:
FGG - Faculty of Civil and Geodetic Engineering
Publication status:
Published
Publication version:
Version of Record
Year:
2021
Number of pages:
24 str.
Numbering:
Vol. 14, iss. 6, art. 1569
PID:
20.500.12556/RUL-127258
UDC:
620.1:691
ISSN on article:
1996-1944
DOI:
10.3390/ma14061569
COBISS.SI-ID:
57744899
Publication date in RUL:
31.05.2021
Views:
1045
Downloads:
146
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Record is a part of a journal
Title:
Materials
Shortened title:
Materials
Publisher:
Molecular Diversity Preservation International
ISSN:
1996-1944
COBISS.SI-ID:
33588485
Licences
License:
CC BY 4.0, Creative Commons Attribution 4.0 International
Link:
http://creativecommons.org/licenses/by/4.0/
Description:
This is the standard Creative Commons license that gives others maximum freedom to do what they want with the work as long as they credit the author.
Licensing start date:
23.03.2021
Secondary language
Language:
Slovenian
Keywords:
beton
,
nivo malte in paste v betonu
,
zgodnja starost
,
razvoj mikrostrukture
,
električna prevodnost
,
ultrazvočna metoda
,
standardni testi
Projects
Funder:
ARRS - Slovenian Research Agency
Project number:
P2-0185
Name:
Potresno inženirstvo
Funder:
ARRS - Slovenian Research Agency
Project number:
J2-9196
Name:
Masivni betoni - optimiziranje tehnologije ob uporabi naprednih preskusnih metod
Funder:
ARRS - Slovenian Research Agency
Funding programme:
PhD project
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