Cargando…

Synthesis and Processing Parameter Optimization of Nano-Belite via One-Step Combustion Method

This paper proposes a new chemical combustion method for the synthesis of nano-low-carbon belite cement via a simple one-step process without using any oxidizers, and related mechanisms are briefly introduced. The starting materials used, including micro-silica (silica fume) as a byproduct of the me...

Descripción completa

Detalles Bibliográficos
Autores principales: Sun, Hongfang, Lian, Weixing, Zhang, Xiaogang, Liu, Wei, Xing, Feng, Ren, Jie
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9322811/
https://www.ncbi.nlm.nih.gov/pubmed/35888377
http://dx.doi.org/10.3390/ma15144913
_version_ 1784756396279988224
author Sun, Hongfang
Lian, Weixing
Zhang, Xiaogang
Liu, Wei
Xing, Feng
Ren, Jie
author_facet Sun, Hongfang
Lian, Weixing
Zhang, Xiaogang
Liu, Wei
Xing, Feng
Ren, Jie
author_sort Sun, Hongfang
collection PubMed
description This paper proposes a new chemical combustion method for the synthesis of nano-low-carbon belite cement via a simple one-step process without using any oxidizers, and related mechanisms are briefly introduced. The starting materials used, including micro-silica (silica fume) as a byproduct of the metallurgic industry and CaCO(3) powders, are of great abundance, and the processing parameters involved were optimized using a series of systematic experiments based on X-ray diffraction (XRD) and the Rietveld fitting method. Besides, the properties of the synthesized belite cement were characterized by the Brunauer–Emmett–Teller (BET) technique and scanning electron microscopy (SEM). Experimental results revealed that the optimized fuel agent was urea with a dosage of 4.902 times that of the starting materials by mass, and the corresponding holding temperature and time were 1150 °C and 2 h, respectively. In addition, the CaO/(SiO(2) + CaO) for the starting materials should be set at 62.5% by mass ratio. BET and SEM results showed that the obtained belite cement had a specific surface area of 11.17 m(2)/g and a size of around 500 nm or even smaller in spherical shapes, suggesting that this method was successfully implemented. Thus, it can be a promising approach for the synthesis of nano-belite particles as a low-carbon construction material, which could be used more in the near future, such as for low-carbon concrete productions.
format Online
Article
Text
id pubmed-9322811
institution National Center for Biotechnology Information
language English
publishDate 2022
publisher MDPI
record_format MEDLINE/PubMed
spelling pubmed-93228112022-07-27 Synthesis and Processing Parameter Optimization of Nano-Belite via One-Step Combustion Method Sun, Hongfang Lian, Weixing Zhang, Xiaogang Liu, Wei Xing, Feng Ren, Jie Materials (Basel) Article This paper proposes a new chemical combustion method for the synthesis of nano-low-carbon belite cement via a simple one-step process without using any oxidizers, and related mechanisms are briefly introduced. The starting materials used, including micro-silica (silica fume) as a byproduct of the metallurgic industry and CaCO(3) powders, are of great abundance, and the processing parameters involved were optimized using a series of systematic experiments based on X-ray diffraction (XRD) and the Rietveld fitting method. Besides, the properties of the synthesized belite cement were characterized by the Brunauer–Emmett–Teller (BET) technique and scanning electron microscopy (SEM). Experimental results revealed that the optimized fuel agent was urea with a dosage of 4.902 times that of the starting materials by mass, and the corresponding holding temperature and time were 1150 °C and 2 h, respectively. In addition, the CaO/(SiO(2) + CaO) for the starting materials should be set at 62.5% by mass ratio. BET and SEM results showed that the obtained belite cement had a specific surface area of 11.17 m(2)/g and a size of around 500 nm or even smaller in spherical shapes, suggesting that this method was successfully implemented. Thus, it can be a promising approach for the synthesis of nano-belite particles as a low-carbon construction material, which could be used more in the near future, such as for low-carbon concrete productions. MDPI 2022-07-14 /pmc/articles/PMC9322811/ /pubmed/35888377 http://dx.doi.org/10.3390/ma15144913 Text en © 2022 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Sun, Hongfang
Lian, Weixing
Zhang, Xiaogang
Liu, Wei
Xing, Feng
Ren, Jie
Synthesis and Processing Parameter Optimization of Nano-Belite via One-Step Combustion Method
title Synthesis and Processing Parameter Optimization of Nano-Belite via One-Step Combustion Method
title_full Synthesis and Processing Parameter Optimization of Nano-Belite via One-Step Combustion Method
title_fullStr Synthesis and Processing Parameter Optimization of Nano-Belite via One-Step Combustion Method
title_full_unstemmed Synthesis and Processing Parameter Optimization of Nano-Belite via One-Step Combustion Method
title_short Synthesis and Processing Parameter Optimization of Nano-Belite via One-Step Combustion Method
title_sort synthesis and processing parameter optimization of nano-belite via one-step combustion method
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9322811/
https://www.ncbi.nlm.nih.gov/pubmed/35888377
http://dx.doi.org/10.3390/ma15144913
work_keys_str_mv AT sunhongfang synthesisandprocessingparameteroptimizationofnanobeliteviaonestepcombustionmethod
AT lianweixing synthesisandprocessingparameteroptimizationofnanobeliteviaonestepcombustionmethod
AT zhangxiaogang synthesisandprocessingparameteroptimizationofnanobeliteviaonestepcombustionmethod
AT liuwei synthesisandprocessingparameteroptimizationofnanobeliteviaonestepcombustionmethod
AT xingfeng synthesisandprocessingparameteroptimizationofnanobeliteviaonestepcombustionmethod
AT renjie synthesisandprocessingparameteroptimizationofnanobeliteviaonestepcombustionmethod