Joint seal and assembly method thereof

A joint seal comprising:

• a generally U-shaped joint base having side plates with at least one opening, and an engaging and locking collar portion;
• a plurality of seal tongue pieces projecting from said side plates to contact a wall of a groove into which the joint base is inserted;
• a flowable sealing material occupying a space between said side plates;
• a heart piece fittable in the joint base to displace the flowable sealing material through the at least one opening and into a space defined between said seal tongue pieces and the wall of the groove into which the joint base is inserted;
• an exterior head plate for covering an opening of the groove into which the joint base is inserted;
• and
• a sealing member for preventing an outflow of the flowable sealing material from the space between said side plates.

A method for sealing a joint, comprising the steps of:

• inserting into a groove of the joint a generally U-shaped joint base having side plates with at least one opening, a plurality of seal tongue pieces projecting from said side plates to contact a wall of a groove into which the joint base is inserted, and a flowable sealing material occupying a space between said side plates;
• removing at least one sealing member preventing an outflow of the flowable sealing material from the space between said side plates;
• and
• pressing a heart piece in the joint base to displace the flowable sealing material through the at least one opening and into a space defined between said seal tongue pieces and the wall of the groove into which the joint base is inserted.

A method for sealing a joint, comprising the steps of:

• inserting into a groove of the joint a generally U-shaped joint base having side plates with at least one opening, an engaging and locking collar portion, a plurality of seal tongue pieces projecting from said side plates to contact a wall of a groove into which the joint base is inserted, and a flowable sealing material occupying a space between said side plates;
• removing at least one sealing member preventing an outflow of the flowable sealing material from the space between said side plates;
• and
• pressing a heart piece in the joint base to displace the flowable sealing material through the at least one opening and into a space defined between said seal tongue pieces and the wall of the groove into which the joint base is inserted.