Research on Balanced Content of Magnesium Oxide in Roller Compacted Concrete
In order to accelerate the application of magnesium oxide (MgO) expanding admixture in roller compacted concrete (RCC), aiming at common three-grading RCC used in water conservancy and hydropower engineering, the autoclave expansion of mortar specimens and the compressive strength of the autoclaved...
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| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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Wiley
2020-01-01
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| Series: | Advances in Materials Science and Engineering |
| Online Access: | http://dx.doi.org/10.1155/2020/8470426 |
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| _version_ | 1849410068842283008 |
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| author | Changli Chen Rongfei Chen Peng Zhao Dongsheng Yang |
| author_facet | Changli Chen Rongfei Chen Peng Zhao Dongsheng Yang |
| author_sort | Changli Chen |
| collection | DOAJ |
| description | In order to accelerate the application of magnesium oxide (MgO) expanding admixture in roller compacted concrete (RCC), aiming at common three-grading RCC used in water conservancy and hydropower engineering, the autoclave expansion of mortar specimens and the compressive strength of the autoclaved mortar specimens were studied by means of autoclave test and compressive strength test. Results showed that the balanced MgO content in RCC, which cannot be determined by the MgO content corresponding to 0.5% autoclave expansion rate of mortar specimens or the inflection point of the curve of autoclave expansion changing with MgO content like normal concrete, should be determined by the MgO content corresponding to the inflection point of the curve that compressive strength of autoclaved mortar specimens changes with MgO content to ensure long-term safe operation of RCC dams. |
| format | Article |
| id | doaj-art-7646ae2bcc8c4a0f80d393bdc5e6fc50 |
| institution | Kabale University |
| issn | 1687-8434 1687-8442 |
| language | English |
| publishDate | 2020-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advances in Materials Science and Engineering |
| spelling | doaj-art-7646ae2bcc8c4a0f80d393bdc5e6fc502025-08-20T03:35:16ZengWileyAdvances in Materials Science and Engineering1687-84341687-84422020-01-01202010.1155/2020/84704268470426Research on Balanced Content of Magnesium Oxide in Roller Compacted ConcreteChangli Chen0Rongfei Chen1Peng Zhao2Dongsheng Yang3School of Materials and Architecture Engineering, Guizhou Normal University, Guiyang 550025, ChinaSchool of Materials and Architecture Engineering, Guizhou Normal University, Guiyang 550025, ChinaSchool of Materials and Architecture Engineering, Guizhou Normal University, Guiyang 550025, ChinaSchool of Materials and Architecture Engineering, Guizhou Normal University, Guiyang 550025, ChinaIn order to accelerate the application of magnesium oxide (MgO) expanding admixture in roller compacted concrete (RCC), aiming at common three-grading RCC used in water conservancy and hydropower engineering, the autoclave expansion of mortar specimens and the compressive strength of the autoclaved mortar specimens were studied by means of autoclave test and compressive strength test. Results showed that the balanced MgO content in RCC, which cannot be determined by the MgO content corresponding to 0.5% autoclave expansion rate of mortar specimens or the inflection point of the curve of autoclave expansion changing with MgO content like normal concrete, should be determined by the MgO content corresponding to the inflection point of the curve that compressive strength of autoclaved mortar specimens changes with MgO content to ensure long-term safe operation of RCC dams.http://dx.doi.org/10.1155/2020/8470426 |
| spellingShingle | Changli Chen Rongfei Chen Peng Zhao Dongsheng Yang Research on Balanced Content of Magnesium Oxide in Roller Compacted Concrete Advances in Materials Science and Engineering |
| title | Research on Balanced Content of Magnesium Oxide in Roller Compacted Concrete |
| title_full | Research on Balanced Content of Magnesium Oxide in Roller Compacted Concrete |
| title_fullStr | Research on Balanced Content of Magnesium Oxide in Roller Compacted Concrete |
| title_full_unstemmed | Research on Balanced Content of Magnesium Oxide in Roller Compacted Concrete |
| title_short | Research on Balanced Content of Magnesium Oxide in Roller Compacted Concrete |
| title_sort | research on balanced content of magnesium oxide in roller compacted concrete |
| url | http://dx.doi.org/10.1155/2020/8470426 |
| work_keys_str_mv | AT changlichen researchonbalancedcontentofmagnesiumoxideinrollercompactedconcrete AT rongfeichen researchonbalancedcontentofmagnesiumoxideinrollercompactedconcrete AT pengzhao researchonbalancedcontentofmagnesiumoxideinrollercompactedconcrete AT dongshengyang researchonbalancedcontentofmagnesiumoxideinrollercompactedconcrete |