Study On The Static Cracking Agent And Its Application

The static cracking agent(SCA) is a new kind of cracking material using expansive pressure to cut or crack concrete, rock and other precious brittle solid materials .SCA has many advantages in application process, which includes no blasting wave, no quake, no flying stone, no noises and no poisonous gas etc.In this paper, based on the detailed analyses of the action mechanism of SCA, by selecting quicklime as main expansive substance and adding several accessory ingredients, the proportion of SCA was systematically investigated and optimized through perpendicular experiments. Then, a type of SCA based on quicklime as main expansive substance was developed; in the meantime, its performances were carefully tested in accordance with the relative standards.The experimental and testing results show that the developed SCA has a fast reaction velocity, a big expansive pressure strength and good weather resistance. The developed SCA has been applied to the static cracking projects of concrete and rock. The application results in practice indicate that the performances of the SCA meet the demands of constructing design; and the static cracking effects was excellent.