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ZSM-5 waste from volatile organic compounds processing as a supplementary cementitious material

Jun Jiang, Binbin Qian, Mengqi Wang, Qiang Cai, Fei Ma, Bing Ma, Yueyang Hu, and Luming Wang

College of Materials Science and Engineering, Yancheng Institute of Technology, Yancheng, China

 

E-mail: huyueyang1989@163.com

Received: 6 April 2020  Accepted: 30 October 2020

Abstract:

ZSM-5 waste, the spent product of ZSM-5, has a high content of active SiO2, and thus, it can be potentially used as a supplementary cementitious material (SCM) in cement. In this paper, standard mortars with 5, 7, and 10% of cement replacement were prepared, and the compressive strength and fluidity were tested. The characterization techniques included: X-ray diffraction (XRD), scanning electron microscopy (SEM), X-ray energy-dispersive spectroscopy (EDS), hydration heat liberation, and Thermal gravimetric (TG). Results demonstrate that the addition of ZSM-5 waste can improve the strength, decrease the fluidity of cement mortar, and reduce the hydration heat of cement. Cement paste with the addition of ZSM-5 waste shows a lower amount of portlandite due to the pozzolanic reaction. Besides, the microstructure of reaction products exhibits a more condensed structure.

Keywords: ZSM-5; Supplementary cementitious material; Pozzolanic activity

Full paper is available at www.springerlink.com.

DOI: 10.1007/s11696-020-01410-z

 

Chemical Papers 75 (4) 1535–1544 (2021)

Wednesday, May 18, 2022

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