利用页岩增强石灰石煅烧粘土水泥(LC3)的性能:工业实施前景

IF 5.4 2区 工程技术 Q1 ENGINEERING, MULTIDISCIPLINARY
Khuram Rashid , Mounir Ltifi , Idrees Zafar , Minkwan Ju
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引用次数: 0

摘要

石灰石煅烧粘土水泥(LC3)是一种很有发展前景的低碳三元粘结剂,它是用煅烧粘土(高岭石含量为40%)和石灰石的混合物代替50%的熟料而开发出来的。然而,对于低品位粘土及其煅烧温度的优化仍然是大规模工业生产的重大挑战。本研究探讨了在铸造的三个阶段中加入页岩/粘土替代品对LC3的潜在增强作用。在第一阶段,改变三元组分的混合比例,确定LC3配方范围为LC3-10至LC3-50,分别以10%至50%的比例替代普通波特兰水泥(OPC)。在第二阶段,通过提高页岩/粘土的煅烧温度,分别为750、800和850℃,进一步细化了优化后的组分。结果表明,用高达20%的LC3取代OPC,再加上800°C煅烧的页岩,其强度优于传统水泥。第三阶段侧重于工业工厂的实施,其中开发了基于页岩气的LC3-15和LC3-25配方。结果表明,LC3-15和LC3-25在所有测试龄期均满足ASTM标准的强度要求,LC3-15也满足EN标准。一项深入的能源利用分析显示了显著的环境和经济效益,LC3-25在工业规模上的生产,减少了16.2%的二氧化碳排放量和11%的生产成本。实验证明,页岩基LC3-25是传统水泥的可持续替代品。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Performance enhancement of limestone calcined clay cement (LC3) using shale: industrial implementation Perspectives
Limestone calcined clay cement (LC3) is one of prospective low-carbon ternary binders, developed by replacing 50 % of clinker with a combination of calcined clay (40 % kaolinite content) and limestone. However, for the optimization with low-grade clay, and their calcination temperatures remains a significant challenge for large-scale industrial production. This study investigates the potential enhancement of LC3 by incorporating shale/clay alternatives across three phases of casting. In the first phase, the mix proportions of the ternary components were varied to determine LC3 formulations ranging from LC3-10 to LC3-50, replacing ordinary Portland cement (OPC) with 10 % to 50 %, respectively. In the second phase, the optimized composition was further refined by increasing the calcination temperature of the shale/clay with 750, 800, and 850 °C. It was resulted that replacing OPC with up to 20 % LC3, combined with shale calcined at 800 °C, outperformed conventional cement in strength. The third phase focused on industrial plant implementation, where the shale-based LC3-15 and LC3-25 formulations were developed. The findings indicated that the LC3-15 and LC3-25 met the strength requirements of ASTM standards at all tested ages, with the LC3-15 also satisfying EN standards. An in-depth energy utilization analysis revealed significant environmental and economic benefits, with the LC3-25 production at an industrial scale, reducing CO2 emissions by 16.2 % and production costs by 11 %. It was demonstrated that the shale-based LC3-25 as a sustainable alternative to conventional cement.
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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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