A Review of the Effects of Raw Material Compositions and Steam Curing Regimes on the Performance and Microstructure of Precast Concrete
In this paper, the effects of steam curing conditions on concrete properties and microstructural characteristics are reviewed, and technical approaches such as appropriate raw material compositions and curing regimes are explored. Moreover, the environmental effects of precast concrete are evaluated...
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| Format: | Article |
| Language: | English |
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MDPI AG
2022-04-01
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| Series: | Materials |
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| Online Access: | https://www.mdpi.com/1996-1944/15/8/2859 |
| _version_ | 1797434459928133632 |
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| author | Yucheng Zhou Yijian Zhan Mintao Zhu Shengyi Wang Juanhong Liu Ning Ning |
| author_facet | Yucheng Zhou Yijian Zhan Mintao Zhu Shengyi Wang Juanhong Liu Ning Ning |
| author_sort | Yucheng Zhou |
| collection | DOAJ |
| description | In this paper, the effects of steam curing conditions on concrete properties and microstructural characteristics are reviewed, and technical approaches such as appropriate raw material compositions and curing regimes are explored. Moreover, the environmental effects of precast concrete are evaluated. The main conclusion is that steam curing can improve the early strength of concrete, but thermal damage, shrinkage cracking, delayed ettringite formation (DEF), and other factors cause the later strength to increase more slowly or even deteriorate. Accordingly, it is necessary to undertake methods for improvement: (1) Adopt a lot of high-activity mineral admixture + a few low-activity mineral admixture combinations to ensure that the early strength of concrete meets the standard while allowing the subsequent development of concrete hydration to ensure durability. (2) Control the precuring time and temperature gradient of the concrete to allow the initial structure of the concrete to form. (3) Use effective secondary curing, such as soaking in an aqueous solution of limestone, in addition to standard curing to further improve the compactness of concrete. Moreover, the replacement of cement with less than 30% mineral admixtures in steam-cured concrete should be promoted to alleviate the environmental hazards caused by excessive CO<sub>2</sub> emissions. |
| first_indexed | 2024-03-09T10:32:33Z |
| format | Article |
| id | doaj.art-e2f4ffe6823a41029f6aaeb1997fa6d2 |
| institution | Directory Open Access Journal |
| issn | 1996-1944 |
| language | English |
| last_indexed | 2024-03-09T10:32:33Z |
| publishDate | 2022-04-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Materials |
| spelling | doaj.art-e2f4ffe6823a41029f6aaeb1997fa6d22023-12-01T21:11:23ZengMDPI AGMaterials1996-19442022-04-01158285910.3390/ma15082859A Review of the Effects of Raw Material Compositions and Steam Curing Regimes on the Performance and Microstructure of Precast ConcreteYucheng Zhou0Yijian Zhan1Mintao Zhu2Shengyi Wang3Juanhong Liu4Ning Ning5Shanghai Construction Group Co., Ltd., Shanghai 200080, ChinaShanghai Construction Group Co., Ltd., Shanghai 200080, ChinaShanghai Engineering Research Centre of Mega Structure High-Performance Concrete, Shanghai 201114, ChinaShanghai Construction Group Co., Ltd., Shanghai 200080, ChinaCollege of Civil and Resource Engineering, University of Science and Technology Beijing, Beijing 100083, ChinaNCO School, Space Engineering University, Beijing 102249, ChinaIn this paper, the effects of steam curing conditions on concrete properties and microstructural characteristics are reviewed, and technical approaches such as appropriate raw material compositions and curing regimes are explored. Moreover, the environmental effects of precast concrete are evaluated. The main conclusion is that steam curing can improve the early strength of concrete, but thermal damage, shrinkage cracking, delayed ettringite formation (DEF), and other factors cause the later strength to increase more slowly or even deteriorate. Accordingly, it is necessary to undertake methods for improvement: (1) Adopt a lot of high-activity mineral admixture + a few low-activity mineral admixture combinations to ensure that the early strength of concrete meets the standard while allowing the subsequent development of concrete hydration to ensure durability. (2) Control the precuring time and temperature gradient of the concrete to allow the initial structure of the concrete to form. (3) Use effective secondary curing, such as soaking in an aqueous solution of limestone, in addition to standard curing to further improve the compactness of concrete. Moreover, the replacement of cement with less than 30% mineral admixtures in steam-cured concrete should be promoted to alleviate the environmental hazards caused by excessive CO<sub>2</sub> emissions.https://www.mdpi.com/1996-1944/15/8/2859precast concretesteam curingperformance evolutionmicrostructure |
| spellingShingle | Yucheng Zhou Yijian Zhan Mintao Zhu Shengyi Wang Juanhong Liu Ning Ning A Review of the Effects of Raw Material Compositions and Steam Curing Regimes on the Performance and Microstructure of Precast Concrete Materials precast concrete steam curing performance evolution microstructure |
| title | A Review of the Effects of Raw Material Compositions and Steam Curing Regimes on the Performance and Microstructure of Precast Concrete |
| title_full | A Review of the Effects of Raw Material Compositions and Steam Curing Regimes on the Performance and Microstructure of Precast Concrete |
| title_fullStr | A Review of the Effects of Raw Material Compositions and Steam Curing Regimes on the Performance and Microstructure of Precast Concrete |
| title_full_unstemmed | A Review of the Effects of Raw Material Compositions and Steam Curing Regimes on the Performance and Microstructure of Precast Concrete |
| title_short | A Review of the Effects of Raw Material Compositions and Steam Curing Regimes on the Performance and Microstructure of Precast Concrete |
| title_sort | review of the effects of raw material compositions and steam curing regimes on the performance and microstructure of precast concrete |
| topic | precast concrete steam curing performance evolution microstructure |
| url | https://www.mdpi.com/1996-1944/15/8/2859 |
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