Influence of sawdust particle size on fired clay brick properties

IF 1.1 4区 工程技术 Q3 CONSTRUCTION & BUILDING TECHNOLOGY
G. Thalmaier, N. Cobîrzan, A. Balog, H. Constantinescu, M. Streza, M. Nasui, B. Neamțu
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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.
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。
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来源期刊
Materiales de Construccion
Materiales de Construccion 工程技术-材料科学:综合
CiteScore
3.20
自引率
9.50%
发文量
38
审稿时长
>12 weeks
期刊介绍: Materiales de Construcción is a quarterly, scientific Journal published in English, intended for researchers, plant technicians and other professionals engaged in the area of Construction, Materials Science and Technology. Scientific articles focus mainly on: - Physics and chemistry of the formation of cement and other binders. - Cement and concrete. Components (aggregate, admixtures, additions and similar). Behaviour and properties. - Durability and corrosion of other construction materials. - Restoration and conservation of the materials in heritage monuments. - Weathering and the deterioration of construction materials. - Use of industrial waste and by-products in construction. - Manufacture and properties of other construction materials, such as: gypsum/plaster, lime%2
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