Materials Reports  2020, Vol. 34 Issue (Z1): 178-180 |
| INORGANIC MATERIALS AND CERAMIC MATRIX COMPOSITES |
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| Effect of Fluoro-aluminum Complexes on the Properties of Aluminum SulfateType Accelerator |
| CHEN Zhenshan1, WU Yusheng1, PENG Pengfei1, HUANG Zhou1, CHEN Meihong1, CAI Boqun2
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1 China Building Material & Certification Group Xiamen Co., Ltd, Xiamen 361000, China;
2 College of Architecture and Civil Engineering, Beijing University of Technology, Beijing 100022, China |
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Abstract In this paper, the influence of the content of fluoro-aluminum complexes in aluminum sulfate type accelerator on the setting time and compressive strength was studied.The results showed that when the content of the fluoro-aluminum complexes in the aluminum sulfate type accelerator increased, the accelerating effect of the accelerator increased, but the 1 d compressive strength decreased. Thermal analysis and XRD test results show that the fluoro-aluminum complexes can promote the formation of AFt in cement, shorten the setting time, and may generate some fluorine-containing hydration products to inhibit the 1 d hydration. The fluorine-containing hydration products may not be CaF2.
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Published: 01 July 2020
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| Fund:This work was financially supported by Science and Technology Programs of Xiamen Construction Bureau(XJK2019-1-3). |
| About author:: Zhenshan Chen, male, born in 1989, intermediate engineer, research direction: high performance cement-based materials. |
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