The carbon emissions from cement production account for 5% -8% of the global total emissions, and the corrosion of steel bars caused by chloride ion erosion in the marine environment is the core issue of the durability of concrete structures.
Alkali activated materials (AAM) using industrial solid waste as precursors are an important way to achieve low-carbon cement production.
Granulated blast furnace slag (GGBS) is currently the most widely studied alkali activated system, and limestone powder (LS) can partially replace GGBS as an auxiliary cementitious material.
However, the chloride ion transport mechanism and microstructural evolution of the AAS-LS composite system in different exposed areas of the ocean are still unclear.
.