Application of HCSA expansive agent in crack control of mass concrete
The open section of the west artificial island of the Hong Kong-Zhuhai-Macao Bridge is a mass concrete structure. The concrete was poured in two times in the vertical direction, that is, the whole bottom plate was poured in the first time, and the middle wall and two side walls were poured in the se...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
| Published: |
EDP Sciences
2021-01-01
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| Series: | E3S Web of Conferences |
| Online Access: | https://www.e3s-conferences.org/articles/e3sconf/pdf/2021/59/e3sconf_iccaue2021_01011.pdf |
| _version_ | 1818689994785554432 |
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| author | Wang XinGang Fan ShiGuang |
| author_facet | Wang XinGang Fan ShiGuang |
| author_sort | Wang XinGang |
| collection | DOAJ |
| description | The open section of the west artificial island of the Hong Kong-Zhuhai-Macao Bridge is a mass concrete structure. The concrete was poured in two times in the vertical direction, that is, the whole bottom plate was poured in the first time, and the middle wall and two side walls were poured in the second time. The side wall and middle wall are easy to crack due to the long time interval between two concrete castings. In order to study the function and effect of HCSA expansion agent in the crack control of mass concrete, the applicable condition of compensating shrinkage in the crack control of mass concrete is analyzed first. Then the effect of HCSA expansion agent was studied in laboratory and field. The experimental results show that HCSA expander has a good expansion effect under laboratory conditions, but it has no expansion effect on the middle side of the mass concrete test block in the engineering site, instead, it will further increase the internal temperature rise of concrete and increase the shrinkage strain of concrete. HCSA expander is helpless for crack control of mass concrete. |
| first_indexed | 2024-12-17T12:18:57Z |
| format | Article |
| id | doaj.art-ce21ce74c0a44895b3f99834a14326f5 |
| institution | Directory Open Access Journal |
| issn | 2267-1242 |
| language | English |
| last_indexed | 2024-12-17T12:18:57Z |
| publishDate | 2021-01-01 |
| publisher | EDP Sciences |
| record_format | Article |
| series | E3S Web of Conferences |
| spelling | doaj.art-ce21ce74c0a44895b3f99834a14326f52022-12-21T21:49:03ZengEDP SciencesE3S Web of Conferences2267-12422021-01-012830101110.1051/e3sconf/202128301011e3sconf_iccaue2021_01011Application of HCSA expansive agent in crack control of mass concreteWang XinGangFan ShiGuangThe open section of the west artificial island of the Hong Kong-Zhuhai-Macao Bridge is a mass concrete structure. The concrete was poured in two times in the vertical direction, that is, the whole bottom plate was poured in the first time, and the middle wall and two side walls were poured in the second time. The side wall and middle wall are easy to crack due to the long time interval between two concrete castings. In order to study the function and effect of HCSA expansion agent in the crack control of mass concrete, the applicable condition of compensating shrinkage in the crack control of mass concrete is analyzed first. Then the effect of HCSA expansion agent was studied in laboratory and field. The experimental results show that HCSA expander has a good expansion effect under laboratory conditions, but it has no expansion effect on the middle side of the mass concrete test block in the engineering site, instead, it will further increase the internal temperature rise of concrete and increase the shrinkage strain of concrete. HCSA expander is helpless for crack control of mass concrete.https://www.e3s-conferences.org/articles/e3sconf/pdf/2021/59/e3sconf_iccaue2021_01011.pdf |
| spellingShingle | Wang XinGang Fan ShiGuang Application of HCSA expansive agent in crack control of mass concrete E3S Web of Conferences |
| title | Application of HCSA expansive agent in crack control of mass concrete |
| title_full | Application of HCSA expansive agent in crack control of mass concrete |
| title_fullStr | Application of HCSA expansive agent in crack control of mass concrete |
| title_full_unstemmed | Application of HCSA expansive agent in crack control of mass concrete |
| title_short | Application of HCSA expansive agent in crack control of mass concrete |
| title_sort | application of hcsa expansive agent in crack control of mass concrete |
| url | https://www.e3s-conferences.org/articles/e3sconf/pdf/2021/59/e3sconf_iccaue2021_01011.pdf |
| work_keys_str_mv | AT wangxingang applicationofhcsaexpansiveagentincrackcontrolofmassconcrete AT fanshiguang applicationofhcsaexpansiveagentincrackcontrolofmassconcrete |