Often called "trenchless relining," this involves inserting a resin-saturated felt tube into the existing clay pipe. Once in place, the tube is inflated and cured (hardened) using heat or UV light. This creates a "pipe within a pipe" that is seamless and root-proof. Slip Lining
Clay pipes are made from natural clay and are often used in areas where soil conditions are stable and there is minimal risk of earth movement. Despite their durability, clay pipes can be prone to damage from: clay pipe repair
Look at your broken pipe.