Concrete Shrinkage Analysis with Quicklime, Microfibers, and SRA Admixtures
This research explores the effect of various humidity conditions and the efficiency of shrinkage-reducing admixtures on the free shrinkage strain of ordinary Portland cement (OPC) concrete and its mechanical properties. An OPC concrete C30/37 mixture was replenished with 5% of quicklime and 2% of or...
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| Format: | Article |
| Language: | English |
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MDPI AG
2023-03-01
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| Series: | Materials |
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| Online Access: | https://www.mdpi.com/1996-1944/16/5/2061 |
| _version_ | 1797614911909527552 |
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| author | Daumantas Židanavičius Mindaugas Augonis Nerijus Adamukaitis Ignacio Villalon Fornes |
| author_facet | Daumantas Židanavičius Mindaugas Augonis Nerijus Adamukaitis Ignacio Villalon Fornes |
| author_sort | Daumantas Židanavičius |
| collection | DOAJ |
| description | This research explores the effect of various humidity conditions and the efficiency of shrinkage-reducing admixtures on the free shrinkage strain of ordinary Portland cement (OPC) concrete and its mechanical properties. An OPC concrete C30/37 mixture was replenished with 5% of quicklime and 2% of organic-compound-based liquid shrinkage-reducing agent (SRA). The investigation revealed that a combination of quicklime and SRA led to the highest reduction in concrete shrinkage strain. Polypropylene microfiber addition was not so effective in reducing the concrete shrinkage as the previous two additives did. The prediction of concrete shrinkage without quicklime additive was performed according to EC2 and B4 model methods, and the obtained results were compared with the experimental ones. The B4 model evaluates the parameters more than the EC2 model does and, therefore, was modified to calculate the concrete shrinkage for the case of variable humidity and to evaluate the effect of quicklime additive. The experimental shrinkage curve that best coincides with the theoretical one was that obtained by the modified B4 model. |
| first_indexed | 2024-03-11T07:19:00Z |
| format | Article |
| id | doaj.art-cd06cc84b7fe453e963ae85aa791f21d |
| institution | Directory Open Access Journal |
| issn | 1996-1944 |
| language | English |
| last_indexed | 2024-03-11T07:19:00Z |
| publishDate | 2023-03-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Materials |
| spelling | doaj.art-cd06cc84b7fe453e963ae85aa791f21d2023-11-17T08:06:42ZengMDPI AGMaterials1996-19442023-03-01165206110.3390/ma16052061Concrete Shrinkage Analysis with Quicklime, Microfibers, and SRA AdmixturesDaumantas Židanavičius0Mindaugas Augonis1Nerijus Adamukaitis2Ignacio Villalon Fornes3Faculty of Civil Engineering and Architecture, Kaunas University of Technology, Studentu Str. 48, LT-51367 Kaunas, LithuaniaFaculty of Civil Engineering and Architecture, Kaunas University of Technology, Studentu Str. 48, LT-51367 Kaunas, LithuaniaFaculty of Civil Engineering and Architecture, Kaunas University of Technology, Studentu Str. 48, LT-51367 Kaunas, LithuaniaFaculty of Civil Engineering and Architecture, Kaunas University of Technology, Studentu Str. 48, LT-51367 Kaunas, LithuaniaThis research explores the effect of various humidity conditions and the efficiency of shrinkage-reducing admixtures on the free shrinkage strain of ordinary Portland cement (OPC) concrete and its mechanical properties. An OPC concrete C30/37 mixture was replenished with 5% of quicklime and 2% of organic-compound-based liquid shrinkage-reducing agent (SRA). The investigation revealed that a combination of quicklime and SRA led to the highest reduction in concrete shrinkage strain. Polypropylene microfiber addition was not so effective in reducing the concrete shrinkage as the previous two additives did. The prediction of concrete shrinkage without quicklime additive was performed according to EC2 and B4 model methods, and the obtained results were compared with the experimental ones. The B4 model evaluates the parameters more than the EC2 model does and, therefore, was modified to calculate the concrete shrinkage for the case of variable humidity and to evaluate the effect of quicklime additive. The experimental shrinkage curve that best coincides with the theoretical one was that obtained by the modified B4 model.https://www.mdpi.com/1996-1944/16/5/2061concrete shrinkagelong-term monitoringquicklimehumidityshrinkage predictionB4 model |
| spellingShingle | Daumantas Židanavičius Mindaugas Augonis Nerijus Adamukaitis Ignacio Villalon Fornes Concrete Shrinkage Analysis with Quicklime, Microfibers, and SRA Admixtures Materials concrete shrinkage long-term monitoring quicklime humidity shrinkage prediction B4 model |
| title | Concrete Shrinkage Analysis with Quicklime, Microfibers, and SRA Admixtures |
| title_full | Concrete Shrinkage Analysis with Quicklime, Microfibers, and SRA Admixtures |
| title_fullStr | Concrete Shrinkage Analysis with Quicklime, Microfibers, and SRA Admixtures |
| title_full_unstemmed | Concrete Shrinkage Analysis with Quicklime, Microfibers, and SRA Admixtures |
| title_short | Concrete Shrinkage Analysis with Quicklime, Microfibers, and SRA Admixtures |
| title_sort | concrete shrinkage analysis with quicklime microfibers and sra admixtures |
| topic | concrete shrinkage long-term monitoring quicklime humidity shrinkage prediction B4 model |
| url | https://www.mdpi.com/1996-1944/16/5/2061 |
| work_keys_str_mv | AT daumantaszidanavicius concreteshrinkageanalysiswithquicklimemicrofibersandsraadmixtures AT mindaugasaugonis concreteshrinkageanalysiswithquicklimemicrofibersandsraadmixtures AT nerijusadamukaitis concreteshrinkageanalysiswithquicklimemicrofibersandsraadmixtures AT ignaciovillalonfornes concreteshrinkageanalysiswithquicklimemicrofibersandsraadmixtures |