Cost-Effective High-Performance Concrete: Experimental Analysis on Shrinkage

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dc.contributor.authorKucharczyková, Barbaracs
dc.contributor.authorKocáb, Daliborcs
dc.contributor.authorDaněk, Petrcs
dc.contributor.authorTerzijski, Ivailocs
dc.coverage.issue17:2730cs
dc.coverage.volume12cs
dc.date.accessioned2020-08-04T11:02:09Z
dc.date.available2020-08-04T11:02:09Z
dc.date.issued2019-08-26cs
dc.description.abstractThis paper focuses on the experimental determination of the shrinkage process in Self-Compacting High-Performance Concrete (SCC HPC) exposed to dry air and autogenous conditions. Special molds with dimensions of 100 mm × 60 mm × 1000 mm and 50 mm × 50 mm × 300 mm equipped with one movable head are used for the measurement. The main aim of this study is to compare the shrinkage curves of SCC HPC, which were obtained by using different measurement devices and for specimens of different sizes. In addition, two different times t0 are considered for the data evaluation to investigate the influence of this factor on the absolute value of shrinkage. In the first case, t0 is the time of the start of measurement, in the second case, t0 is the setting time. The early-shrinkage (48 h) is continuously measured using inductive sensors leant against the movable head and with strain gauges embedded inside the test specimen. To monitor the long term shrinkage, the specimens are equipped with special markers, embedded into the specimens’ upper surface or ends. These markers serve as measurement bases for the measurement using mechanical strain gauges. The test specimens are demolded after 48 h and the long term shrinkage is monitored using the embedded strain gauges (inside the specimens) and mechanical strain gauges that are placed, in regular intervals, onto the markers embedded into the specimens’ surface or ends. The results show that both types of measurement equipment give a similar result in the case of early age measurement, especially for the specimens cured under autogenous conditions. However, the early age and especially long term measurement are influenced by the position of the measurement sensors, particularly in the case of specimens cured under dry air conditions. It was proven that the time t0 have a fundamental influence on the final values of the shrinkage of investigated SCC HPC and have a significant impact on the conclusions on the size effect.en
dc.formattextcs
dc.format.extent1-19cs
dc.format.mimetypeapplication/pdfcs
dc.identifier.citationMaterials . 2019, vol. 12, issue 17:2730, p. 1-19.en
dc.identifier.doi10.3390/ma12172730cs
dc.identifier.issn1996-1944cs
dc.identifier.other158217cs
dc.identifier.urihttp://hdl.handle.net/11012/180575
dc.language.isoencs
dc.publisherMDPIcs
dc.relation.ispartofMaterialscs
dc.relation.urihttps://www.mdpi.com/1996-1944/12/17/2730cs
dc.rightsCreative Commons Attribution 4.0 Internationalcs
dc.rights.accessopenAccesscs
dc.rights.sherpahttp://www.sherpa.ac.uk/romeo/issn/1996-1944/cs
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/cs
dc.subjecthigh-performance concreteen
dc.subjectshrinkageen
dc.subjectmass lossesen
dc.subjectautogenousen
dc.subjectstrain gaugeen
dc.subjectshrinkage moldsen
dc.titleCost-Effective High-Performance Concrete: Experimental Analysis on Shrinkageen
dc.type.driverarticleen
dc.type.statusPeer-revieweden
dc.type.versionpublishedVersionen
sync.item.dbidVAV-158217en
sync.item.dbtypeVAVen
sync.item.insts2020.08.04 13:02:09en
sync.item.modts2020.08.04 12:28:26en
thesis.grantorVysoké učení technické v Brně. Fakulta stavební. Ústav stavebního zkušebnictvícs
thesis.grantorVysoké učení technické v Brně. Fakulta stavební. Ústav betonových a zděných konstrukcícs
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