Influence of sawdust particle size on fired clay brick properties

IF 16.4 1区化学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Accounts of Chemical Research Pub Date : 2020-03-19 DOI:10.3989/mc.2020.04219

G. Thalmaier, N. Cobîrzan, A. Balog, H. Constantinescu, M. Streza, M. Nasui, B. Neamțu

引用次数: 12

Abstract

This study investigates the effect of adding different size fractions of the same pore forming agent (sawdust) on the material’s compressive strength and heat transfer. The samples were dry pressed and fired at high temperature inside an oven. Phase transformations were evidenced by a combination of differential thermal analysis, thermogravimetry and mass spectrometry (DTA-TGA-MS) and X-ray diffraction (XRD) techniques, in the temperature range of 24-900 oC. Image analysis (IA) and compression tests were performed to explain the mechanical behaviour of the samples. The thermal conductivity was obtained by using combined photopyroelectric calorimetry (PPE) and lock-in thermography (LIT) techniques. The pressing direction has an impact on the distribution of pores and the heat transfer by conduction.

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木屑颗粒大小对烧结粘土砖性能的影响

本研究考察了同一孔隙形成剂(锯末)添加不同粒径分数对材料抗压强度和传热的影响。样品被干燥压制，并在烤箱中高温烧制。通过差热分析、热重和质谱(DTA-TGA-MS)和x射线衍射(XRD)技术的结合，在24-900℃的温度范围内证实了相变。图像分析(IA)和压缩试验进行了解释的力学行为的样品。采用光热电量热法(PPE)和锁定热像仪(LIT)相结合的方法获得了材料的导热系数。压紧方向对孔的分布和导热有影响。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Accounts of Chemical Research 化学-化学综合

CiteScore

31.40

自引率

1.10%

发文量

312

审稿时长

2 months

期刊介绍： Accounts of Chemical Research presents short, concise and critical articles offering easy-to-read overviews of basic research and applications in all areas of chemistry and biochemistry. These short reviews focus on research from the author’s own laboratory and are designed to teach the reader about a research project. In addition, Accounts of Chemical Research publishes commentaries that give an informed opinion on a current research problem. Special Issues online are devoted to a single topic of unusual activity and significance. Accounts of Chemical Research replaces the traditional article abstract with an article "Conspectus." These entries synopsize the research affording the reader a closer look at the content and significance of an article. Through this provision of a more detailed description of the article contents, the Conspectus enhances the article's discoverability by search engines and the exposure for the research.