The annual production of global construction waste exceeds 3 billion tons, and 95% of traditional recycling methods are only used for roadbed or landfill, resulting in low resource utilization.
Cement production contributes 74-81% of concrete carbon emissions and is a key link in carbon reduction.
Traditional recycled aggregates replacing natural aggregates only reduce carbon emissions by 2%, with limited effectiveness.
The cementless recycled compacted concrete process can achieve zero waste and complete recycling, which is the most promising low-carbon path.
However, the high preparation pressure of 100 MPa limits its practical engineering applications, and there is an urgent need to develop low-pressure preparation processes and quantify environmental benefits.
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