CT-Rock bolts, a hybrid type rock bolt that combines a point anchored type with a fully bonded type, fixes a rock bolt to a borehole using a rock shell until the strength of mortar develops and distributes mortar evenly throughout the entire borehole length using combi tubes(steel dome and P.E tube)
Features
A rock shell fixes a rock bolt on the ceiling of a tunnel and makes construction easy
A rock shell works as a spacer for rock bolts installed on the side of a tunnel and prevents eccentricity
Mortar injected with 20 Bar pressure infiltrates into joints and cracks, and blocks groundwater
Combi tubes prevents corrosion by blocking ground water and air as well as direct contact between a rock bolt and borehole surface
Grouting result can be monitored as mortar comes back out of PE tube and a borehole