标題: Synthesis and Characterization of the Blast Furnace Cinder-Based Geopolymer-Solidified Pile Mud

作者: Dong, YQ (Dong, Yiqie); Zhou, M (Zhou, Min); Liang, AN (Liang, Anna); You, YW (You, Yiwen); Wang, ZY (Wang, Zhongyi); Hou, HB (Hou, Haobo)

來源出版物: JOURNAL OF TESTING AND EVALUATION 卷: 48 期: 4 頁: 3281-3299 DOI: 10.1520/JTE20180438 出版年: JUL 2020

摘要: For evaluating the effect of the blast furnace cinder-based geopolymer solidified pile mud, the relationship of the solidified blocks between the compressive strength and the n(silicon): n(aluminum) (n[Si]:n[Al], n(sodium):n(aluminium) (n[Na]:n[Al]) and n(water):n(binder) are fitted using the Box-Behnken experimental design, and the optimal values of the solidified block are selected. The mineral compositions, microstructure, and pore structure are determined through X-ray analysis, micromorphology, and static equilibrium adsorption test, respectively. Based on these experiments, the following conclusions are presented. The response surface model can well evaluate the relationship between the compressive strength and multiple factors. The theoretical maximum strength of the block is 1.90 MPa when the n(Si):n(Al), n(Na):n(Al), and n(water):n(binder) are 2.873, 0.706, and 2.329, respectively. The compressive properties of the blocks meet the requirements of the China Standards JTG E30-2005, Test Method of Cement and Concrete for Highway Engineering. Zeolite A, krohnkite, rankinite, sidorenkite, and berthierite are formed through geopolymerization. The dense lamellar particles have disappeared into the microstructure, and the amorphous substances are clearly observed. The isotherms of the pile mud and the solidified blocks belong to Category IV with an H-3-type hysteresis loop. The absorbance and the specific surface area (S-BET) of the specimen in optimal ratio are 14.24 g/cm(3) and 2.314 m(2)/g, respectively. The total pore volume decreases by 67.19-77.08 %. In the process, Si-O-Si and Al-O-Si are broken down during hydration, and polymers such as Si-O-Na, Si-OH, Al(OH)(4-), Al(OH)(5)(2-), and Al(OH)(6)(3-) were formed.

入藏号: WOS:000546025200047

語言: English

文獻類型: Article

作者關鍵詞: blast furnace cinder; geopolymerization; Box-Behnken experimental design; compressive strength; microstructure

地址: [Dong, Yiqie; Zhou, Min; Liang, Anna; You, Yiwen; Wang, Zhongyi; Hou, Haobo] Wuhan Univ, Sch Resource & Environm Sci, 129 Luoyu Rd, Wuhan 430079, Peoples R China.

[Zhou, Min; Hou, Haobo] Hubei Environm Remediat Mat Engn Technol Res Ctr, 129 Luoyu Rd, Wuhan 430079, Peoples R China.

通訊作者地址: Hou, HB (corresponding author)，Wuhan Univ, Sch Resource & Environm Sci, 129 Luoyu Rd, Wuhan 430079, Peoples R China.

Hou, HB (corresponding author)，Hubei Environm Remediat Mat Engn Technol Res Ctr, 129 Luoyu Rd, Wuhan 430079, Peoples R China.

電子郵件地址: houhb@whu.edu.cn

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