Removable and replaceable anchored tunnel gasket

A construction including a cast-in-place gasket for a concrete structure, the construction comprising:

• a gasket body formed from a resilient material, the body including in cross-section a base wall, a first side wall, a second side wall and a top wall;
• a first anchor member protruding from the first side wall of the gasket body and located adjacent the base wall;
• a second anchor member protruding from the second side wall of the gasket body and located adjacent the base wall;
• wherein a face of the first and the second anchor members is at least one of planar and rounded;
• a concrete structure comprising a groove formed in the concrete structure by the gasket body when the concrete structure is cast and a pair of spaced side channels open to the groove, which side channels are formed in the concrete structure by the first and second anchor members when the concrete structure is cast;
• and
• wherein the first and second anchor members are held in a respective one of the side channels, and wherein the first and second anchor members are constructed such that they are selectively detachable in an intact manner from the side channels and the gasket body is constructed such that it is selectively detachable in an intact manner from the groove defined in the concrete structure.

A construction including a cast-in-place gasket and a concrete structure in which the gasket is held, the construction comprising:

• a gasket body formed of a resilient material, the gasket body having a longitudinal axis and including in cross-section a base wall, a first planar or curved side wall, a second planar or curved side wall, and a top wall;
• a first anchor member protruding radially from the first side wall of the gasket body and located adjacent the base wall and running along the longitudinal axis of the gasket body;
• a second anchor member protruding radially from the second side wall of the gasket body and located adjacent the base wall and running along the longitudinal axis of the gasket body;
• wherein the first and second anchor members each include a face which is at least one of planar and rounded;
• a concrete structure including a groove formed in the concrete structure by the gasket body during the casting in place of the gasket and a pair of spaced side channels formed in the concrete structure by the first and second anchor members, which spaced side channels are open to the groove;
• and
• wherein the first and second anchor members are constructed such that the first and second anchor members are selectively detachable in an intact manner from the side channels and the gasket body is selectively detachable from the groove in the concrete structure in an intact manner.

A method for replacing a defective gasket in a concrete structure comprising:

• providing a gasket body including first and second anchor members extending, respectively, from the gasket body on opposed side walls of the gasket body adjacent a base wall thereof;
• providing a concrete structure including a groove formed by the gasket body and a pair of opposed side channels formed by the first and second anchor members, which side channels are open to the groove;
• removing the gasket body from the groove and removing the first and second anchor members from the side channels, wherein the gasket body comprises a resilient material and the first and second anchor members are so constructed that the anchor members are detachable in an intact manner from the side channels open to the groove and the gasket body is constructed so that it is detachable from the groove in an intact manner;
• and
• providing a replacement gasket including a gasket body and first and second anchor members;
• and
• inserting the replacement gasket body into the groove and the anchor members into the side channels of the concrete structure.