A novel process for preparing fireproofing materials from various industrial wastes.

Area of Science:

• Materials Science
• Environmental Engineering
• Chemical Engineering

Background:

• Traditional fireproofing materials often lack optimal air sealing capabilities.
• Industrial waste presents a disposal challenge and an opportunity for material innovation.

Purpose of the Study:

• To investigate the incorporation of industrial wastes into novel fireproofing materials.
• To evaluate the air sealing, fireproofing, workability, and mechanical properties of these new materials.
• To understand the mechanisms behind the enhanced air tightness.

Main Methods:

• Investigated the influence of various parameters on air permeability.
• Utilized microstructure analysis to clarify air sealing mechanisms.
• Assessed workability and mechanical properties for practical applications.

Main Results:

• Developed fireproofing materials with air permeability 3-4 orders of magnitude lower than traditional ones.
• New materials exhibit a compact, monolithic structure.
• Coal fly ash-based material achieved an air permeability coefficient of 4.17 × 10⁻⁸ m²/s, tensile strength of 2.14 MPa, and breaking elongation of 48.90%.

Conclusions:

• Industrial wastes can be effectively recycled into high-performance fireproofing and air-sealing materials.
• Pozzolanic activity of wastes and film-forming properties of polymers contribute to excellent air tightness.
• This method offers an economical and environmentally friendly solution for waste utilization.