Chemical grout is a fluid material used to fill voids, seal leaks, and stabilize soils or structures. It hardens in place to form a solid, impermeable mass, effectively reinforcing and waterproofing areas like tunnels, foundations, and dams. Chemical grout is versatile and can be injected into cracks, joints, or porous substrates, making it ideal for repairing concrete, preventing water infiltration, and strengthening weak soils.