Journal Published Online: 14 June 2023
Volume 51, Issue 6

Effects of Steel Slag and Flue Gas Desulfurization Gypsum on the Properties of Metakaolin-Based Geopolymer Grouting Materials

CODEN: JTEVAB

Abstract

In this paper, the performance of steel slag (SS) and flue gas desulfurization (FGD) gypsum modified metakaolin-based geopolymer (MGP) was studied for the purpose of industrial solid waste reuse, and a new geopolymer grouting material was obtained. The setting time, fluidity, bulk density, and compressive strength of MGP containing different mass contents of solid waste materials were studied through a series of tests. In addition, the microstructure mechanism of MGP was analyzed using scanning electron microscopy and Fourier transformation infrared spectroscope. The results show that the setting time of MGP increases with the increase of SS content, whereas the setting time decreases with the increase of FGD content. The addition of SS or FGD slightly reduces the fluidity of MGP. Adding an appropriate amount of SS to MGP can significantly improve the later compressive strength of the specimen, whereas adding an appropriate amount of FGD can improve the compressive strength of the specimen, especially the early compressive strength. When the SS content was 4 %, the hardened MGP exhibited the best properties in compressive strength and bulk density. The formation of amorphous geopolymer gel products in MGP matrix was promoted by the addition of SS and FGD. These results will be beneficial to the production of new environmentally friendly and low-cost MGP grouting materials, which can improve the comprehensive utilization level of SS and FGD and achieve the purpose of protecting the ecological environment.

Author Information

Wei, Jing
School of Civil Engineering and Architecture, Wuhan Polytechnic University, Wuhan, Hubei, China
Liu, Jiesheng
Pilot-scale Platform of Marine Engineering Structural Protective Materials, Wuhan Polytechnic University, Wuhan, Hubei, China School of Civil Engineering and Architecture, Wuhan Polytechnic University, Wuhan, Hubei, China
Zhang, Man
School of Civil Engineering and Architecture, Wuhan Polytechnic University, Wuhan, Hubei, China
Feng, Bowen
School of Civil Engineering and Architecture, Wuhan Polytechnic University, Wuhan, Hubei, China
Chen, Yaohua
School of Civil Engineering and Architecture, Wuhan Polytechnic University, Wuhan, Hubei, China
Wang, Lei
School of Civil Engineering and Architecture, Wuhan Polytechnic University, Wuhan, Hubei, China
Wang, Zhen
School of Chemical and Environmental Engineering, Wuhan Polytechnic University, Wuhan, Hubei, China
Fu, Wanwan
School of Civil Engineering and Architecture, Wuhan Polytechnic University, Wuhan, Hubei, China
Peng, Hao
School of Civil Engineering and Architecture, Wuhan Polytechnic University, Wuhan, Hubei, China
Lu, Haijun
School of Civil Engineering and Architecture, Wuhan Polytechnic University, Wuhan, Hubei, China
Tan, Xiaoming
School of Civil Engineering and Architecture, Wuhan Polytechnic University, Wuhan, Hubei, China
Pages: 17
Price: $25.00
Related
Reprints and Permissions
Reprints and copyright permissions can be requested through the
Copyright Clearance Center
Details
Stock #: JTE20220637
ISSN: 0090-3973
DOI: 10.1520/JTE20220637