The present invention discloses a nano-silica
sol-enhanced
sodium carbonate-activated
slag regeneration
mortar and a preparation method thereof. In the
mortar composition of this scheme,
sodium carbonate is used as an activator, which has the advantages of widely available raw materials, small corrosiveness and
shrinkage cracking, high later strength, low
energy consumption and cost, etc.; and the nano-silica
sol in the component can well make up for the shortcomings of slow coagulation speed and low early strength caused by
sodium carbonate-activated
slag, and at the same time can strengthen the interface transition zone of recycled fine aggregate, significantly improve the strength and bonding performance of the
mortar;
slag and recycled fine aggregate are both
solid wastes, which can improve the
utilization rate of
solid wastes and reduce landfill and
land occupation, which is beneficial to environmental governance and protection. On the one hand, the present invention can significantly reduce the emission of
greenhouse gases such as
carbon dioxide; on the other hand, it can promote the utilization of
solid wastes, alleviate the shortage of
natural sand and gravel, achieve significant economic, environmental and
social benefits, and has broad prospects for promotion and application.