低NaOH浓废HBP-GGBS基碱活化复合材料的早期和长期性能评价

IF 5.1 2区 工程技术 Q1 ENGINEERING, MULTIDISCIPLINARY
Mine Kurtay-Yıldız
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引用次数: 0

摘要

本研究考察了以GGBS和废空心砖粉(HBP)为原料,经低浓度(6 M) NaOH溶液活化后制备的碱活化复合材料(AACs)的长期(365天)性能。此外,它同时评估了机械强度、耐久性和微观结构性能,侧重于长期性能分析,这在文献中是有限的。机械性能,包括抗压、弯曲和劈裂抗拉强度,在7、28、90、180和365天内进行评估,而耐久性测试(抗硫酸盐、碳酸化和毛细吸水)在1、3、6和12个月进行。采用XRD, FTIR, DTA-TGA和SEM-EDS对28和365 d进行了显微结构分析。结果显示,随着时间的推移,机械性能有了显著改善,365天的抗压、抗弯和劈裂抗拉强度分别达到77.05 MPa、7.78 MPa和2.63 MPa。回归分析显示,抗压强度和抗折强度之间有很强的相关性,抗拉强度和抗折强度之间有中等到很强的相关性。耐久性评估显示耐硫酸盐侵蚀和碳酸化,强调材料在恶劣环境条件下的长期稳定性。此外,微观结构的发现证实了完整凝胶相的形成,强调了固化时间的重要性和这些分析方法的互补性。本研究确定了固化时间在优化废HBP-GGBS基AACs的机械性能和耐久性方面的重要性。此外,该研究还证明了基于HBP-GGBS的废弃AACs作为可持续、耐用和高性能建筑材料的潜力。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Early and long-term performance evaluation of low NaOH concentrated waste HBP-GGBS based alkali activated composites
This study investigates the long-term (365 days) performance of alkali activated composites (AACs) produced using GGBS and waste hollow brick powder (HBP) and activated with a low concentration (6 M) NaOH solution. Furthermore, it evaluated mechanical strength, durability and microstructure properties together, focusing on long-term performance analysis, which is limited in the literature. Mechanical properties, including compressive, flexural, and split tensile strengths, were evaluated over 7, 28, 90, 180, and 365 days, while durability tests (sulfate resistance, carbonation, and capillary water absorption) were carried out at 1, 3, 6, and 12 months. Microstructural analyses using XRD, FTIR, DTA-TGA and SEM-EDS were performed at 28 and 365 days. The results revealed significant improvements in mechanical performance over time, with compressive, flexural, and split tensile strengths reaching 77.05 MPa, 7.78 MPa, and 2.63 MPa at 365 days, respectively. Regression analysis showed strong correlations between compressive and flexural strengths and moderate to strong correlations between tensile and flexural strengths. Durability evaluations revealed resistance to sulfate attack and carbonation, emphasizing the long-term stability of the material under aggressive environmental conditions. Furthermore, microstructural findings confirmed the formation of intact gel phases, emphasizing the importance of curing time and the complementary nature of these analytical methods. This study determined the importance of curing time in optimizing the mechanical and durability properties of waste HBP-GGBS based AACs. In addition, this study demonstrates the potential of waste HBP-GGBS based AACs as sustainable, durable, and high-performance construction materials.
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来源期刊
Engineering Science and Technology-An International Journal-Jestech
Engineering Science and Technology-An International Journal-Jestech Materials Science-Electronic, Optical and Magnetic Materials
CiteScore
11.20
自引率
3.50%
发文量
153
审稿时长
22 days
期刊介绍: Engineering Science and Technology, an International Journal (JESTECH) (formerly Technology), a peer-reviewed quarterly engineering journal, publishes both theoretical and experimental high quality papers of permanent interest, not previously published in journals, in the field of engineering and applied science which aims to promote the theory and practice of technology and engineering. In addition to peer-reviewed original research papers, the Editorial Board welcomes original research reports, state-of-the-art reviews and communications in the broadly defined field of engineering science and technology. The scope of JESTECH includes a wide spectrum of subjects including: -Electrical/Electronics and Computer Engineering (Biomedical Engineering and Instrumentation; Coding, Cryptography, and Information Protection; Communications, Networks, Mobile Computing and Distributed Systems; Compilers and Operating Systems; Computer Architecture, Parallel Processing, and Dependability; Computer Vision and Robotics; Control Theory; Electromagnetic Waves, Microwave Techniques and Antennas; Embedded Systems; Integrated Circuits, VLSI Design, Testing, and CAD; Microelectromechanical Systems; Microelectronics, and Electronic Devices and Circuits; Power, Energy and Energy Conversion Systems; Signal, Image, and Speech Processing) -Mechanical and Civil Engineering (Automotive Technologies; Biomechanics; Construction Materials; Design and Manufacturing; Dynamics and Control; Energy Generation, Utilization, Conversion, and Storage; Fluid Mechanics and Hydraulics; Heat and Mass Transfer; Micro-Nano Sciences; Renewable and Sustainable Energy Technologies; Robotics and Mechatronics; Solid Mechanics and Structure; Thermal Sciences) -Metallurgical and Materials Engineering (Advanced Materials Science; Biomaterials; Ceramic and Inorgnanic Materials; Electronic-Magnetic Materials; Energy and Environment; Materials Characterizastion; Metallurgy; Polymers and Nanocomposites)
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