This invention discloses an
intelligent design and preparation method for low-
cement-content sprayable
engineering cement-based low-carbon composite materials, belonging to the field of
composite material mix design. The method includes: constructing a multi-objective genetic optimization intelligent framework integrating
raw material performance and carbon emission data to collaboratively optimize mechanical properties, workability, and low-carbon targets during the
design phase, achieving precise pre-control of carbon emissions. A synergistic reinforcement design using recycled PE
fiber networks and multi-microporous
slurry is employed, replacing
cement and natural aggregates with a large amount of recycled sand, recycled micropowder, and
fly ash, reducing cement content to 210-300 parts. While ensuring rapid hardening, high
toughness, and good sprayable construction performance, the material's implicit carbon emissions are significantly reduced. The resulting
composite material achieves a 28-day
compressive strength of 50-65 MPa, with net carbon emissions approaching zero, making it suitable for
green building and rapid
engineering repair applications.