Preparation of a Cenosphere Curing Agent and Its Application to Foam Concrete
Cenospheres are hollow and spherical particles extracted from fly ash. Controllable separation of cenosphere particles with different densities and sizes can be realized by controlling the density of a flotation solution of cenospheres. In this paper, cenospheres were corroded by hydrofluoric acid t...
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| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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Wiley
2019-01-01
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| Series: | Advances in Materials Science and Engineering |
| Online Access: | http://dx.doi.org/10.1155/2019/7523492 |
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| author | Zhongwei Liu Kang Zhao Yufei Tang Chi Hu |
| author_facet | Zhongwei Liu Kang Zhao Yufei Tang Chi Hu |
| author_sort | Zhongwei Liu |
| collection | DOAJ |
| description | Cenospheres are hollow and spherical particles extracted from fly ash. Controllable separation of cenosphere particles with different densities and sizes can be realized by controlling the density of a flotation solution of cenospheres. In this paper, cenospheres were corroded by hydrofluoric acid to produce perforated pores on their shell surfaces. Then, the cenospheres were mixed with water to prepare the cenosphere curing agent. Foam concrete was prepared using ordinary Portland cement (42.5 R), vegetable protein foaming agent, fly ash, cenospheres, and the cenosphere curing agent as raw materials. The water absorption rate of the cenosphere curing agent was 156.0 wt.%, and 85% of the loaded water was released at a relative humidity of 97.4%, which met the microenvironment requirements of foam concrete. Addition of the cenosphere curing agent during foam concrete preparation has the following positive functions for foam concrete: inhibiting autogenous shrinkage, promoting the hydration degree, improving the state of the interfacial transition zone between cenospheres and the hardened cement paste, reducing the number of connected pores, relieving the stress concentration on the pore walls, and enhancing the compression strength of the foam concrete. |
| format | Article |
| id | doaj-art-eb4723ab172f4b63b1bfd7890c49efa0 |
| institution | DOAJ |
| issn | 1687-8434 1687-8442 |
| language | English |
| publishDate | 2019-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advances in Materials Science and Engineering |
| spelling | doaj-art-eb4723ab172f4b63b1bfd7890c49efa02025-08-20T03:21:16ZengWileyAdvances in Materials Science and Engineering1687-84341687-84422019-01-01201910.1155/2019/75234927523492Preparation of a Cenosphere Curing Agent and Its Application to Foam ConcreteZhongwei Liu0Kang Zhao1Yufei Tang2Chi Hu3Department of Materials Science and Engineering, Xi’an University of Technology, Xi’an 710048, ChinaDepartment of Materials Science and Engineering, Xi’an University of Technology, Xi’an 710048, ChinaDepartment of Materials Science and Engineering, Xi’an University of Technology, Xi’an 710048, ChinaSichuan College of Architectural Technology, Deyang 618000, ChinaCenospheres are hollow and spherical particles extracted from fly ash. Controllable separation of cenosphere particles with different densities and sizes can be realized by controlling the density of a flotation solution of cenospheres. In this paper, cenospheres were corroded by hydrofluoric acid to produce perforated pores on their shell surfaces. Then, the cenospheres were mixed with water to prepare the cenosphere curing agent. Foam concrete was prepared using ordinary Portland cement (42.5 R), vegetable protein foaming agent, fly ash, cenospheres, and the cenosphere curing agent as raw materials. The water absorption rate of the cenosphere curing agent was 156.0 wt.%, and 85% of the loaded water was released at a relative humidity of 97.4%, which met the microenvironment requirements of foam concrete. Addition of the cenosphere curing agent during foam concrete preparation has the following positive functions for foam concrete: inhibiting autogenous shrinkage, promoting the hydration degree, improving the state of the interfacial transition zone between cenospheres and the hardened cement paste, reducing the number of connected pores, relieving the stress concentration on the pore walls, and enhancing the compression strength of the foam concrete.http://dx.doi.org/10.1155/2019/7523492 |
| spellingShingle | Zhongwei Liu Kang Zhao Yufei Tang Chi Hu Preparation of a Cenosphere Curing Agent and Its Application to Foam Concrete Advances in Materials Science and Engineering |
| title | Preparation of a Cenosphere Curing Agent and Its Application to Foam Concrete |
| title_full | Preparation of a Cenosphere Curing Agent and Its Application to Foam Concrete |
| title_fullStr | Preparation of a Cenosphere Curing Agent and Its Application to Foam Concrete |
| title_full_unstemmed | Preparation of a Cenosphere Curing Agent and Its Application to Foam Concrete |
| title_short | Preparation of a Cenosphere Curing Agent and Its Application to Foam Concrete |
| title_sort | preparation of a cenosphere curing agent and its application to foam concrete |
| url | http://dx.doi.org/10.1155/2019/7523492 |
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