The high-pressure concrete brick is synthesized into a semi-dry and wet-expanded composite material by adding cement material (cement, hearth powder) and pellets (crushed stone, sand material) with water, and then forced to pressurize into a compact structure by external force. High-pressure concrete bricks use fine-grained coarse sand generally between 0.75mm~2.36mm and the crystal grain size of calcium carbonate is the same. Therefore, calcium carbonate crystal can be used instead of sand and part of gravel pellets to replace the material of high-pressure concrete brick.