碱激发高炉镍渣胶凝材料的反应机理和性能

高炉镍渣的化学组成中Si、Al含量高，矿物组成中玻璃相含量高，是潜在的碱激发胶凝材料的原材料，碱激发高炉镍渣的研究利于推动高炉镍渣的资源化利用和丰富现代碱激发胶凝材料学。本项目将系统研究碱激发高炉镍渣胶凝材料的反应机理、微结构演变和宏观性能发展规律。主要研究目标包括以下几个方面：建立表征高炉镍渣在碱激发条件下的活性指数，建立碱激发高炉镍渣的化学反应表达式和反应动力学模型，阐述碱激发镍渣胶凝材料的微结构演变历程和宏观性能发展规律，揭示掺加其它工业废渣对碱激发高炉镍渣胶凝材料的改性机理。本项目的研究结果为碱激发高炉镍渣胶凝材料的制备和工程应用提供理论基础。

Blast furnace nickel slag is a potential raw material for alkali-activated binder due to its high Si and Al contents in chemical compositions and high amorphous phase content in mineral compositions. The study of alkali-activated blast furnace nickel slag will not only promote the efficient reuse of blast furnace nickel slag, but also enrich the modern alkali-activated cementitious material science. The reaction mechanism, microstructure evolution, and macroscopic properties development will be systematically studied in this project. The main research objectives are as follows: to establish the activity index for blast furnace nickel slag under alkaline activation; to establish the chemical reaction equation and reaction kinetics model of alkali-activated blast furnace nickel slag; to expound the microstructure evolution and the development law of macroscopic properties of alkali-activated blast furnace nickel slag binder; to reveal the modification mechanism of alkali-activated blast furnace nickel slag binder by incorporating other industrial residues. The results obtained will provide a theoretical basis for the preparation and engineering application of alkali-activated blast furnace nickel slag binder.