Sintering and Crystallization Intensifiers for Production of Ceramic Paving Blocks by Vibropressing Technology

IF 1.4 4区工程技术 Q3 ENGINEERING, CIVIL

Periodica Polytechnica-Civil Engineering Pub Date : 2023-03-28 DOI:10.3311/ppci.21818

S. Montayev, B. Omarov, R. Ristavletov, K. Dosov, Nurgul Montayeva, Kanat Dosaliev

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引用次数: 0

Abstract

The article presents the results of research on application of sintering and crystallization initiators based on a composition of blast-furnace granulated slag and glass wastes in the ceramic masses for production of ceramic paving blocks by vibro-pressing. The leading role of sintering and crystallization initiators in assuring the strong and dense structure of ceramic pieces was updated. The main laws of changes in physical and mechanical properties of ceramic paving stone samples depending on the amount of sintering and crystallization initiators in the burning temperature range 950–1000 °C have been established. It was determined that the availability of finely dispersed glass powder (fraction less than 0.1 mm) as a component of crystallization sintering initiators contributes to early emergence of liquid phase in the ceramic mass, as softening temperature of glass powder begins already at 720–750 °C. According to the results of X-ray phase and electron microscopic analysis it was determined that crystallization of low-temperature form of ß-wollastonite (CaSiO3) is observed in the samples burnt at the temperature range of 950–1000 °C. It was proved that the availability of ß-wollastonite in the ceramic mass serves as a reinforcing component. It has been established that high strength values are achieved in those compositions where ß-wollastonite crystallization in the burning products is the highest. As a result of scientific and experimental work the feasibility of producing the ceramic paving stones by vibropressing containing sintering and crystallization initiators that meet the requirements of quality, aesthetics, environmental friendliness, resource- and energy-saving was proved.

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振压技术生产陶瓷砌块的烧结和结晶增强剂

本文介绍了以高炉渣粒和玻璃废料为原料，在振冲压制陶瓷块料中应用烧结结晶引发剂的研究结果。介绍了烧结和结晶引发剂在保证陶瓷片坚固致密结构中的主导作用。建立了在950 ~ 1000℃燃烧温度范围内，陶瓷铺路石试样物理力学性能随烧结和结晶引发剂用量变化的主要规律。结果表明，分散较细的玻璃粉(小于0.1 mm)作为结晶烧结引发剂的组分有助于陶瓷中液相的早期出现，因为玻璃粉的软化温度已经在720-750℃开始。根据x射线相和电镜分析结果，在950 ~ 1000℃范围内燃烧的样品中观察到低温形态的ß-硅灰石(CaSiO3)结晶。结果表明:ß-硅灰石在陶瓷块体中的可用性是一种增强成分。已经确定，在燃烧产物中ß-硅灰石结晶最高的组合物中获得高强度值。通过科学研究和实验研究，证明了振压烧结结晶引发剂生产符合质量、美观、环保、资源和节能要求的陶瓷铺路石的可行性。

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来源期刊

Periodica Polytechnica-Civil Engineering 工程技术-工程：土木

CiteScore

3.40

自引率

16.70%

发文量

审稿时长

12 months

期刊介绍： Periodica Polytechnica Civil Engineering is a peer reviewed scientific journal published by the Faculty of Civil Engineering of the Budapest University of Technology and Economics. It was founded in 1957. Publication frequency: quarterly. Periodica Polytechnica Civil Engineering publishes both research and application oriented papers, in the area of civil engineering. The main scope of the journal is to publish original research articles in the wide field of civil engineering, including geodesy and surveying, construction materials and engineering geology, photogrammetry and geoinformatics, geotechnics, structural engineering, architectural engineering, structural mechanics, highway and railway engineering, hydraulic and water resources engineering, sanitary and environmental engineering, engineering optimisation and history of civil engineering. The journal is abstracted by several international databases, see the main page.