Effect of Dune Sand on Drying Shrinkage Cracking of Fly Ash Concrete
In this study, the drying shrinkage cracking characteristics of concrete containing 30% fly ash were investigated for various dune sand (DS) replacements and unit water contents. In the results of compressive strength, the mixture with a DS-to-fine aggregate (DS/FA) ratio of 10% showed the highest v...
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| Format: | Article |
| Language: | English |
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MDPI AG
2022-03-01
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| Series: | Applied Sciences |
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| Online Access: | https://www.mdpi.com/2076-3417/12/6/3128 |
| _version_ | 1797472926938693632 |
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| author | Euibae Lee Jeongwon Ko Jaekang Yoo Sangjun Park Jeongsoo Nam |
| author_facet | Euibae Lee Jeongwon Ko Jaekang Yoo Sangjun Park Jeongsoo Nam |
| author_sort | Euibae Lee |
| collection | DOAJ |
| description | In this study, the drying shrinkage cracking characteristics of concrete containing 30% fly ash were investigated for various dune sand (DS) replacements and unit water contents. In the results of compressive strength, the mixture with a DS-to-fine aggregate (DS/FA) ratio of 10% showed the highest value, which was 17.6% higher than the lowest value. However, in the results of restrained drying shrinkage cracking, the mixtures with a DS/FA ratio of 20% showed the highest crack resistance, which was 24% higher than the lowest crack resistance. Therefore, it is necessary to consider DS replacement according to the required performance of concrete. The restraint effect factors of the aggregates were analyzed based on the relationship between the volume change of each aggregate and the change in the net time to cracking. The restraint effect factor of crushed sand was 0.71–0.98 and that of DS was 0.56–0.90 when that of the coarse aggregate (CA) was 1. |
| first_indexed | 2024-03-09T20:08:57Z |
| format | Article |
| id | doaj.art-ad2b2a38f62b401b80c8b60e5f84d052 |
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| issn | 2076-3417 |
| language | English |
| last_indexed | 2024-03-09T20:08:57Z |
| publishDate | 2022-03-01 |
| publisher | MDPI AG |
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| series | Applied Sciences |
| spelling | doaj.art-ad2b2a38f62b401b80c8b60e5f84d0522023-11-24T00:24:08ZengMDPI AGApplied Sciences2076-34172022-03-01126312810.3390/app12063128Effect of Dune Sand on Drying Shrinkage Cracking of Fly Ash ConcreteEuibae Lee0Jeongwon Ko1Jaekang Yoo2Sangjun Park3Jeongsoo Nam4Daewoo Institute of Construction Technology, DAEWOO E&C, Suwon 16297, KoreaDaewoo Institute of Construction Technology, DAEWOO E&C, Suwon 16297, KoreaDaewoo Institute of Construction Technology, DAEWOO E&C, Suwon 16297, KoreaDepartment of Building Construction, Korea Polytechnics, Gumi 39257, KoreaDepartment of Architectural Engineering, Chungnam National University, Daejeon 34134, KoreaIn this study, the drying shrinkage cracking characteristics of concrete containing 30% fly ash were investigated for various dune sand (DS) replacements and unit water contents. In the results of compressive strength, the mixture with a DS-to-fine aggregate (DS/FA) ratio of 10% showed the highest value, which was 17.6% higher than the lowest value. However, in the results of restrained drying shrinkage cracking, the mixtures with a DS/FA ratio of 20% showed the highest crack resistance, which was 24% higher than the lowest crack resistance. Therefore, it is necessary to consider DS replacement according to the required performance of concrete. The restraint effect factors of the aggregates were analyzed based on the relationship between the volume change of each aggregate and the change in the net time to cracking. The restraint effect factor of crushed sand was 0.71–0.98 and that of DS was 0.56–0.90 when that of the coarse aggregate (CA) was 1.https://www.mdpi.com/2076-3417/12/6/3128dune sandfly ashdrying shrinkage crackingnet time to crackingrestraint effect factor |
| spellingShingle | Euibae Lee Jeongwon Ko Jaekang Yoo Sangjun Park Jeongsoo Nam Effect of Dune Sand on Drying Shrinkage Cracking of Fly Ash Concrete Applied Sciences dune sand fly ash drying shrinkage cracking net time to cracking restraint effect factor |
| title | Effect of Dune Sand on Drying Shrinkage Cracking of Fly Ash Concrete |
| title_full | Effect of Dune Sand on Drying Shrinkage Cracking of Fly Ash Concrete |
| title_fullStr | Effect of Dune Sand on Drying Shrinkage Cracking of Fly Ash Concrete |
| title_full_unstemmed | Effect of Dune Sand on Drying Shrinkage Cracking of Fly Ash Concrete |
| title_short | Effect of Dune Sand on Drying Shrinkage Cracking of Fly Ash Concrete |
| title_sort | effect of dune sand on drying shrinkage cracking of fly ash concrete |
| topic | dune sand fly ash drying shrinkage cracking net time to cracking restraint effect factor |
| url | https://www.mdpi.com/2076-3417/12/6/3128 |
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