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Minimizing energy consumption to produce safe one-part alkali-activated materials
Journal of Cleaner Production ( IF 9.7 ) Pub Date : 2021-09-24 , DOI: 10.1016/j.jclepro.2021.129137
Moataz Refaat 1 , Alaa Mohsen 2 , El-Sayed A.R. Nasr 1 , Mohamed Kohail 1
Affiliation  

Recently, alkali-activated binders have emerged as a promising sustainable solution in the construction industry. There is great demand to promote the development of one-part alkali-activated materials (OP-AAMs) to overcome the hazardous, irritating, and corrosive nature of alkaline activator solutions while sustaining their superior engineering properties. This study's main objective is to reduce the temperature of the thermochemical treatment process used to produce one-part alkali-activated slag (OP-AAS) by using an amorphous active aluminosilicate precursor. The effect of different treatment temperatures (1000 °C, 800 °C, 500 °C, 350 °C, and 300 °C) on the fresh and hardened properties of OP-AAS pastes was studied. The phase composition and microstructure were investigated using X-ray diffraction analysis and scanning electron microscopy equipped with energy-dispersive X-ray analysis. A viability/cytotoxicity test was performed on selected mixes to investigate the effect of the prepared OP-AAS on the human skin. It is concluded that the optimum treatment temperature to prepare OP-AAS is ranged between 300 °C and 500 °C. Therefore, with low-energy consumption, the production of OP-AAS is accessible, economical, and safe for the commercial application of alkali-activated materials in the construction industry.



中文翻译:

最大限度地减少能源消耗以生产安全的单组分碱活化材料

最近,碱活化粘合剂已成为建筑行业有前途的可持续解决方案。迫切需要促进单组分碱活化材料 (OP-AAM) 的开发,以克服碱性活化剂溶液的危险性、刺激性和腐蚀性,同时保持其优异的工程性能。本研究的主要目的是通过使用无定形活性铝硅酸盐前体来降低用于生产单部分碱活化炉渣 (OP-AAS) 的热化学处理工艺的温度。研究了不同处理温度(1000 °C、800 °C、500 °C、350 °C 和 300 °C)对 OP-AAS 浆料新鲜和硬化性能的影响。使用 X 射线衍射分析和配备能量色散 X 射线分析的扫描电子显微镜研究相组成和微观结构。对选定的混合物进行了活力/细胞毒性测试,以研究制备的 OP-AAS 对人体皮肤的影响。得出的结论是,制备 OP-AAS 的最佳处理温度范围在 300 °C 到 500 °C 之间。因此,OP-AAS 的生产具有低能耗、经济、安全的特点,可用于碱活化材料在建筑行业的商业应用。得出的结论是,制备 OP-AAS 的最佳处理温度范围在 300 °C 到 500 °C 之间。因此,OP-AAS 的生产具有低能耗、经济、安全的特点,可用于碱活化材料在建筑行业的商业应用。得出的结论是,制备 OP-AAS 的最佳处理温度范围在 300 °C 到 500 °C 之间。因此,OP-AAS 的生产具有低能耗、经济、安全的特点,可用于碱活化材料在建筑行业的商业应用。

更新日期:2021-09-28
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