Effects and mechanism research of the crystalline state for the semi-crystalline calcium silicate |
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| Affiliation: | 1. Department of Civil and Environmental Engineering, Saitama University, 255, Shimo-Okubo, Sakura-ku, Saitama, 338-8570, Japan;2. Construction Materials Laboratory, Asahi Kasei Construction Materials Corporation, 106 Someya, Sakai, Ibaraki, 306-0493, Japan;3. Department of Building Materials Technology, Faculty of Building Material, National University of Civil Engineering (NUCE), 55 Giai Phong Road, Hanoi, Viet Nam;1. College of Materials Science and Engineering, Qingdao University of Science and Technology, Qingdao 266042, China;2. State Key Laboratory of Chemical Engineering, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China;3. Department of Chemical, Biological and Pharmaceutical Engineering, New Jersey Institute of Technology, Newark, NJ 07102, USA;4. Guangdong Sitong Group Co., Ltd, Chaozhou 521000, China;1. Ömer Halisdemir University, Department of Chemistry, 51240 Nigde, Turkey;2. Ömer Halisdemir University, Nanotechnology Application and Research Center, 51240 Nigde, Turkey;3. Ömer Halisdemir University, Department of Geological Engineering, 51240 Nigde, Turkey |
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| Abstract: | Semi-crystalline silicates have wide varieties and are used in a wide range of fields for their unstable crystalline degrees. The crystalline state largely depends on the synthesis time, temperature and nucleation promoter. In this paper, the above three parameters have been researched. With different synthesis temperatures, the active calcium silicate, xonotlite and the intermediate products have been simulated. After that, the crystalline process has been tracked from 1 h to 8 h. A model of calcium silicate formation process has been set up based on the time and temperature experiments. Finally, a nucleation promoter, aluminum, has been added into the synthesis process. The crystalline degree is greatly increased with the aluminum addition. When the aluminum and silicate rate is 0.1, the crystalline degree is above 70% after 1 h. |
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