A reinforcement element for a diaphragm wall is described. The reinforcement element includes a reinforcement cage, the reinforcement element further includes a seal-carrier provided with a mounting part for receiving at least one seal, which is elongated, the seal-carrier is fixed to the first end part of the reinforcement cage and extends along the longitudinal direction of the reinforcement cage, the seal-carrier defines a housing for receiving the seal, at least a first part of which is surrounded by a sacrificial material. Additionally, a method for making a diaphragm wall in the ground is described that comprises placing the reinforcement element in a first trench, pouring concrete into the first trench, and discharging the sacrificial material out of the housing using a scraping tool.

A reinforcement element for a diaphragm wall is described. The reinforcement element includes a reinforcement cage, the reinforcement element further includes a seal-carrier provided with a mounting part for receiving at least one seal, which is elongated, the seal-carrier is fixed to the first end part of the reinforcement cage and extends along the longitudinal direction of the reinforcement cage, the seal-carrier defines a housing for receiving the seal, at least a first part of which is surrounded by a sacrificial material. Additionally, a method for making a diaphragm wall in the ground is described that comprises placing the reinforcement element in a first trench, pouring concrete into the first trench, and discharging the sacrificial material out of the housing using a scraping tool.