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Experimental research on sintering construction spoil bricks based on microwave heating technology
Junxi Cheng1,2, Zhushan Shao3,4, Teng Xu1,2
1School of Civil Engineering, Xi'an University of Architecture & Technology, 710055, Xi'an, China.
Summary
Utilizing construction spoil for eco-friendly bricks via microwave sintering is efficient. Adding specific powders (MASM) enhances temperature rise and sintering efficiency, creating sustainable building materials.
Area of Science:
- Materials Science
- Environmental Engineering
- Sustainable Construction
Background:
- Construction spoil accumulation poses significant urban and environmental challenges.
- Traditional sintered brick production depletes clay resources and destroys farmland.
- Microwave sintering offers a more efficient and eco-friendly alternative.
Purpose of the Study:
- To investigate the feasibility of using construction spoil for brick production via microwave sintering.
- To evaluate the impact of metal-oxide powders (MASM) on microwave sintering efficiency.
- To characterize the properties of bricks produced from construction spoil.
Main Methods:
- Construction spoil was used as the primary raw material.
- Aluminum oxide (Al2O3), iron oxide (Fe2O3), and titanium dioxide (TiO2) powders were added as microwave-absorbing substances (MASM).
- Bricks were sintered using microwave technology, and their unit weight, compressive strength, and meso-structure were analyzed.
Main Results:
- Microwave sintering proved to be an efficient technology for brick manufacturing.
- MASM significantly increased the temperature rise rate of the samples.
- The addition of MASM improved the impermeability and overall sintering efficiency of the bricks.
Conclusions:
- Microwave sintering of construction spoil is a viable method for sustainable brick production.
- MASM effectively enhances the microwave sintering process, leading to improved brick properties.
- This approach offers a dual benefit of waste material utilization and reduced environmental impact.
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