초록 ▼

A concrete structure, such as a burial vault, having an integrally bonded thermoplastic resin liner. The liner is a rigid molded product having a bottom wall and side walls and an open top. A thermosetting resin adhesive is applied to the outer surface of the liner and consists of an epoxy resin sys

A concrete structure, such as a burial vault, having an integrally bonded thermoplastic resin liner. The liner is a rigid molded product having a bottom wall and side walls and an open top. A thermosetting resin adhesive is applied to the outer surface of the liner and consists of an epoxy resin system, a solvent for the thermoplastic liner, and a surfactant. Before the adhesive is fully cured, wet flowable concrete is applied to the adhesive layer. The solvent acts to solubilize the outer surface of the plastic liner, while the surfactant reduces the hydrophobic characteristics of the adhesive to provide a firmly bonded composite structure.

대표청구항 ▼

A burial vault, comprising a rigid molded thermoplastic liner having a bottom wall and side walls and an open top, an outer layer of concrete disposed on the outer surface of said liner, and an intermediate layer of a cured thermosetting resin adhesive bonding said concrete to said liner, said adhes

A burial vault, comprising a rigid molded thermoplastic liner having a bottom wall and side walls and an open top, an outer layer of concrete disposed on the outer surface of said liner, and an intermediate layer of a cured thermosetting resin adhesive bonding said concrete to said liner, said adhesive comprising an epoxy resin system, a solvent compatible with said epoxy resin system and capable of solubilizing the outer surface of said liner, and a surfactant capable of emulsifying said epoxy resin system and said solvent.