-5℃~+10℃ environmental friendly dust free rock cracking powder It is a non-toxic and cementations powder, which consisting of calcined oxides of calcium, silicon and aluminum, beecomes a highly powered amazing expansive pressure of 11200 T / m2 when mixed with water. Marble, granite, limestone, plain concrete, reinforced concrete, boulders, and ledge are fractured overnight without noise, vibration, or fly rock. Especially, used as environment constraints or when explosive is not permitted for use.