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A 100% high-aluminum fly ash-based high-density mullite ceramic with a triple microstructure: Preparation and mechanical characterization
Wang, Tianyuan1,2; Ma, Shuhua2; Wang, Xiaohui2; Hong, Tao1; Luo, Yang2,3,4,5
2020-04-10
Source PublicationCONSTRUCTION AND BUILDING MATERIALS
ISSN0950-0618
Volume239Pages:11
Abstract

The value-added utilization of high-aluminum fly ash (HAFA) is of significance to China's solid waste development strategy because of the country's large amount of emissions. Mullite is the main component of HAFA, which is an important raw material that is used for the preparation of high-performance ceramics. Therefore, a new technology for the preparation of ceramics from HAFA is proposed in this study, Based on the combination of the concept of particle grading used in engineering geology with ceramics preparation, rearrangement of the ceramic microstructure, and the use of production experience and the Furnas model to calculate the best particle reorganization solution, a 100% HAFA-based high-density mullite ceramic with a triple microstructure was successfully designed. By analyzing the ceramic body using X-ray diffraction, scanning electron microscopy, and a mineral liberation analyzer, the roles of the three different structures and strengthening principles of the ceramics were determined. Given the synergy of the triple microstructure, the ceramic exhibits excellent physical properties (bulk density of 2.29 g/cm(3); rupture modulus of 116.74 MPa; apparent porosity of 0.00%; and water absorption of 0.00%). Therefore, the mullite-based ceramic can be used as a high-strength waterproof material in high-temperature and/or high-corrosion environments. The proposed microstructure opens up a new route for the utilization of HAFA, greatly improves the value of its utilization, and provides new research ideas for future studies. (C) 2019 Elsevier Ltd. All rights reserved.

KeywordHigh-aluminum Fly Ash Ceramics Mullite Triple Microstructure Particle Size Distribution
DOI10.1016/j.conbuildmat.2019.117761
Language英语
WOS KeywordHigh-strength ; Coal ; Tiles ; Extraction ; Composite
Funding Projectmajor science and technology projects of the Inner Mongolia Autonomous Region (Preparation and Application Demonstration of Fly Ash Based Soil Conditioner)
WOS Research AreaConstruction & Building Technology ; Engineering ; Materials Science
WOS SubjectConstruction & Building Technology ; Engineering, Civil ; Materials Science, Multidisciplinary
Funding Organizationmajor science and technology projects of the Inner Mongolia Autonomous Region (Preparation and Application Demonstration of Fly Ash Based Soil Conditioner)
WOS IDWOS:000521514300017
PublisherELSEVIER SCI LTD
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/39924
Collection中国科学院过程工程研究所
Corresponding AuthorMa, Shuhua
Affiliation1.Xian Univ Architecture & Technol, Met Engn, Xian 710055, Peoples R China
2.Chinese Acad Sci, Inst Proc Engn, CAS Key Lab Green Proc & Engn, Natl Engn Lab Hydromet Cleaner Prod Tecnol, Beijing 100190, Peoples R China
3.City Univ Hong Kong, Dept Phys, Dept Mat Sci & Engn, Kowloon, Hong Kong, Peoples R China
4.City Univ Hong Kong, Dept Biomed Engn, Kowloon, Hong Kong, Peoples R China
5.Univ Chinese Acad Sci, Sch Chem Engn, Beijing 100049, Peoples R China
Recommended Citation
GB/T 7714
Wang, Tianyuan,Ma, Shuhua,Wang, Xiaohui,et al. A 100% high-aluminum fly ash-based high-density mullite ceramic with a triple microstructure: Preparation and mechanical characterization[J]. CONSTRUCTION AND BUILDING MATERIALS,2020,239:11.
APA Wang, Tianyuan,Ma, Shuhua,Wang, Xiaohui,Hong, Tao,&Luo, Yang.(2020).A 100% high-aluminum fly ash-based high-density mullite ceramic with a triple microstructure: Preparation and mechanical characterization.CONSTRUCTION AND BUILDING MATERIALS,239,11.
MLA Wang, Tianyuan,et al."A 100% high-aluminum fly ash-based high-density mullite ceramic with a triple microstructure: Preparation and mechanical characterization".CONSTRUCTION AND BUILDING MATERIALS 239(2020):11.
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