Study on the Durability and Environmental Compatibility of Manganese Slag-Based Grouting Materials

In the field of tunnel and underground engineering, grouting materials are continuously exposed to complex groundwater environments, enduring persistent erosion from groundwater. Particularly, the impact of SO42− and Cl− ions in groundwater on the durability of grouting materials cannot be overlooked [1]. Additionally, manganese slag-based grouting materials pose potential heavy metal contamination risks. As an alkali-activated material, they exhibit relatively high alkali content. When exposed to groundwater, both heavy metal ions and high-concentration alkali components may leach out, contaminating the surrounding environment.. Given these concerns, it is necessary to evaluate the leaching of heavy metals and alkali components from manganese slag grouting materials to assess their environmental safety.