本发明公开了纳米硅溶胶增强碳酸钠激发矿渣再生砂浆及其制备方法，本方案砂浆成分中，采用碳酸钠作为激发剂，其具有原材料广泛易得、腐蚀性和收缩开裂小、后期强度高、能耗和成本低等优点；而组分中的纳米硅溶胶可以很好地弥补由碳酸钠激发矿渣所造成的凝结速度慢和早期强度低的不足，同时能强化再生细骨料的界面过渡区，显著提高砂浆的强度和粘结性能；矿渣和再生细骨料均为固体废弃物，可提高固废利用率并减少垃圾填埋和土地占用，有利于环境治理保护。本发明一方面可显著减少二氧化碳等温室气体的排放；另一方面可促进固废利用，缓解天然砂石短缺，取得显著的经济、环境和社会效益，具有广阔的推广应用前景。

The invention discloses nano-silica sol reinforced sodium carbonate excited slag regenerated mortar and a preparation method thereof.In mortar components of the scheme, sodium carbonate is adopted as an exciting agent and has the advantages that raw materials are wide and easy to obtain, corrosivity and shrinkage cracking are small, the later strength is high, energy consumption and cost are low, and the like; the nano silica sol in the components can well make up for the defects of low condensation speed and low early strength caused by sodium carbonate excitation of the slag, and can reinforce an interface transition area of the recycled fine aggregate, so that the strength and the bonding performance of the mortar are remarkably improved; the slag and the recycled fine aggregate are solid wastes, so that the utilization rate of the solid wastes can be increased, landfill and land occupation are reduced, and environmental governance and protection are facilitated. On one hand, emission of greenhouse gases such as carbon dioxide can be remarkably reduced; on the other hand, solid waste utilization can be promoted, the shortage of natural gravel is relieved, remarkable economic, environmental and social benefits are obtained, and wide application and popularization prospects are achieved.