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Classification and research status of solid waste grouting materials: A review
Hong Quan1, Xue Yang2, Hui-Juan Yu3
1College of Natural Resources and Environment, Northwest A&F University, Shaanxi, China.
Summary
Alkali-activated industrial solid waste offers a sustainable alternative for grouting materials, reducing CO2 emissions and utilizing waste. This approach supports carbon neutrality goals by replacing traditional cement and chemical grouts.
Area of Science:
- Materials Science
- Civil Engineering
- Environmental Science
Background:
- Traditional cement and chemical grouting materials have limitations, including high CO2 emissions, resource consumption, cost, toxicity, and limited applicability.
- Alkali-activated cementitious materials present a sustainable alternative with low energy consumption and reduced CO2 footprint.
Purpose of the Study:
- To categorize and introduce common grouting materials.
- To analyze the physicochemical properties and reaction mechanisms of alkali-activated industrial solid waste as grouting materials.
- To provide a basis for the research and application of solid waste grouting technology.
Main Methods:
- Review and categorization of existing grouting materials.
- Analysis of physicochemical properties and reaction mechanisms of alkali-activated materials.
- Evaluation of performance enhancement through additives for specific engineering needs.
Main Results:
- Cement grouting is versatile but environmentally taxing due to CO2 emissions.
- Chemical grouting faces challenges with cost, universality, and toxicity.
- Alkali-activated industrial solid waste effectively consumes waste and lowers CO2 emissions.
Conclusions:
- Alkali-activated industrial solid waste is a promising eco-friendly grouting material.
- Customizable properties through additives allow wide application in construction.
- This technology supports carbon neutrality and carbon peak objectives.
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