Performance of green binder developed from flue gas desulfurization gypsum incorporating Portland cement and large-volume fly ash
文献类型：期刊论文
| 作者 | Wan, Yong1; Hui, Xinminnan1,2; He, Xingxing3; Li, Jiangshan1; Xue, Jianfei1,4; Feng, Dianzhi1,4; Liu, Xiaoli3; Wang, Shiquan5 |
| 刊名 | CONSTRUCTION AND BUILDING MATERIALS
 |
| 出版日期 | 2022-09-19 |
| 卷号 | 348期号:-页码:- |
| 关键词 | Flue gas desulfurization gypsum Fly ash Green binder Unconfined compressive strength Water resistance Microstructure |
| ISSN号 | 0950-0618 |
| 英文摘要 | Flue gas desulfurization gypsum (FGDG) and fly ash (FA) are by-products from coal-fired power plants that urgently need to be recycled in a sustainable way. This study aims to develop a green binder using FGDG incorporating cement and large-volume FA that can substitute some cement in structural and geotechnical en-gineering applications. The engineering properties including initial setting time, compressive strength, pH value, water absorption and water resistance of the blended binder with different amounts of FGDG were investigated. The results indicate that the addition of FGDG can decrease the initial setting time and water absorption of the blended paste, and is more helpful for the improvement of the early strength. The maximum compressive strength of the blended paste can be obtained when the dosages of FA and cement are the same. When the amount of cement is more than 20%, the softening coefficient of the blended paste was always greater than 0.6 regardless of the amount of FGDG. In addition, the change of pH value with curing time could be divided into four typical stages, which can be explained by the hydration process of the blended binder. Micro-analysis showed that many C-S-H gels and ettringite were interwoven on the surface of gypsum crystals, which greatly restrained the solubility of gypsum in water and improved the water resistance of the binder. |
| 学科主题 | Construction & Building Technology ; Engineering ; Materials Science |
| 语种 | 英语 |
| WOS记录号 | WOS:000882961600002 |
| 出版者 | ELSEVIER SCI LTD |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/35481]  |
| 专题 | 中科院武汉岩土力学所 |
| 作者单位 | 1.State Key Laboratory of Geomechanics and Geotechnical Engineering, Institute of Rock and Soil Mechanics, Chinese Academy of Sciences, Wuhan 430071, China 2.University of Chinese Academy of Sciences, Beijing 100049, China 3.State Key Laboratory of Hydroscience and Engineering, Tsinghua University, Beijing 100084, China 4.School of Mechanics & Engineering, Liaoning Technical University, Fuxin 123000, Liaoning Province, China 5.School of Resources and Civil Engineering, Suzhou University, Suzhou 234000, Anhui, China |
| 推荐引用方式 GB/T 7714 | Wan, Yong,Hui, Xinminnan,He, Xingxing,et al. Performance of green binder developed from flue gas desulfurization gypsum incorporating Portland cement and large-volume fly ash[J]. CONSTRUCTION AND BUILDING MATERIALS,2022,348(-):-. |
| APA | Wan, Yong.,Hui, Xinminnan.,He, Xingxing.,Li, Jiangshan.,Xue, Jianfei.,...&Wang, Shiquan.(2022).Performance of green binder developed from flue gas desulfurization gypsum incorporating Portland cement and large-volume fly ash.CONSTRUCTION AND BUILDING MATERIALS,348(-),-. |
| MLA | Wan, Yong,et al."Performance of green binder developed from flue gas desulfurization gypsum incorporating Portland cement and large-volume fly ash".CONSTRUCTION AND BUILDING MATERIALS 348.-(2022):-. |
入库方式： OAI收割
来源：武汉岩土力学研究所
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