How Long Does HSCA Take to Crack Rock?

The cracking time of HSCA (soundless cracking agent) depends on several factors such as rock hardness, hole diameter, temperature, and the type of expansive mortar used.

Under normal conditions, visible cracking usually begins within 2 to 24 hours after the HSCA mixture is poured into drilled holes.

For medium-hard rock or concrete, cracking typically starts within 8 to 12 hours. In extremely hard rock such as granite or basalt, the cracking process may take slightly longer.

Proper drilling patterns, hole diameter, and correct mixing ratios help ensure maximum expansion pressure and efficient rock splitting when using soundless cracking agents.