Optimization of mechanical performance of limestone calcined clay cement: Effects of calcination temperature of nanosized tubular halloysite, gypsum content, and water/binder ratio
文献类型：期刊论文
| 作者 | Yu, Ting5,6; Zhang, Baifa4; Yuan, Peng4; Guo, Haozhe1; Liu, Dong5,6 ; Chen, Jiarong5,6; Liu, Hongmei5,6; Belaroui, Lala Setti2,3
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| 刊名 | CONSTRUCTION AND BUILDING MATERIALS
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| 出版日期 | 2023-07-31 |
| 卷号 | 389页码:17 |
| 关键词 | Halloysite limestone calcined clay cement(LC3) calcination temperature gypsum content water binder ratio |
| ISSN号 | 0950-0618 |
| DOI | 10.1016/j.conbuildmat.2023.131709 |
| 英文摘要 | Halloysite is a clay mineral that has a nanosized tubular morphology and high pozzolanic activity, and its calcination product can be used as a supplementary cementitious material in limestone calcined clay cement (LC3). In this study, the effects of the calcination temperature of halloysite, gypsum content, and water/binder (W/B) ratio on the mechanical properties and microstructures of LC3 were evaluated. The results demonstrated that halloysite calcined at the temperature of 650 degrees C-850 degrees C exhibited high pozzolanic activity: LC3 prepared using halloysite calcined above 650 degrees C exhibited a shorter setting times and higher compressive strengths than those prepared with halloysite calcined at 550 degrees C. This is attributable to the formation of more additional calcium aluminate silicate hydrate gel, and a larger amount of hemicarboaluminate and monocarboaluminate at higher temperatures than at lower temperatures, which results in more filling of pores in LC3 under the former con-ditions than the later conditions. The results also indicated that the optimum content of additional gypsum for LC3 was between 0 wt% and 2 wt%, and overdose gypsum did not substantially alter their setting times but decrease their compressive strengths. In contrast, a decrease in the W/B ratios decreased their setting times, total porosity, and increased their compressive strengths. Overall, in this study, LC3 prepared using halloysite calcined at 750 degrees C, with a W/B ratio of 0.40 and without additional gypsum, exhibited the highest compressive strengths, which were 42.6, 51.7, and 57.1 MPa after 3, 7, and 28 days of curing, respectively. These findings deepen the research on the hydration mechanism of LC3 prepared with calcined halloysite and provide basic data for the wide application of this approach. |
| WOS研究方向 | Construction & Building Technology ; Engineering ; Materials Science |
| 语种 | 英语 |
| WOS记录号 | WOS:001008779000001 |
| 源URL | [http://ir.gig.ac.cn/handle/344008/74317]  |
| 专题 | 中国科学院矿物学与成矿学重点实验室 |
| 通讯作者 | Yuan, Peng |
| 作者单位 | 1.Guangdong Acad Sci, Inst Resources Utilizat & Rear Earth Dev, Guangzhou 510650, Peoples R China 2.Univ Oran1 Ahmed Ben Bella, Fac Med, Dept Pharm, BP 1510 Oran El MNaouer, Oran, Algeria 3.Univ Oran1 Ahmed Ben Bella, Fac Sci Exactes & Appl, Lab Chim Mat LCM, BP 1524 Oran El MNaouer, Oran, Algeria 4.Guangdong Univ Technol, Sch Environm Sci & Engn, Guangzhou 510006, Peoples R China 5.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 6.Chinese Acad Sci, Inst Earth Sci, Guangzhou Inst Geochem, CAS Key Lab Mineral & Metallogeny,Guangdong Prov K, Guangzhou 510640, Peoples R China |
| 推荐引用方式 GB/T 7714 | Yu, Ting,Zhang, Baifa,Yuan, Peng,et al. Optimization of mechanical performance of limestone calcined clay cement: Effects of calcination temperature of nanosized tubular halloysite, gypsum content, and water/binder ratio[J]. CONSTRUCTION AND BUILDING MATERIALS,2023,389:17. |
| APA | Yu, Ting.,Zhang, Baifa.,Yuan, Peng.,Guo, Haozhe.,Liu, Dong.,...&Belaroui, Lala Setti.(2023).Optimization of mechanical performance of limestone calcined clay cement: Effects of calcination temperature of nanosized tubular halloysite, gypsum content, and water/binder ratio.CONSTRUCTION AND BUILDING MATERIALS,389,17. |
| MLA | Yu, Ting,et al."Optimization of mechanical performance of limestone calcined clay cement: Effects of calcination temperature of nanosized tubular halloysite, gypsum content, and water/binder ratio".CONSTRUCTION AND BUILDING MATERIALS 389(2023):17. |
入库方式： OAI收割
来源：广州地球化学研究所
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