UN-VULCANIZED SYNTHETIC RUBBER SHEETS-WATERPROOF MATERIAL OF SELF-ADHESION TYPE AND CONSTRUCTION METHOD USING THE SAME

• Main Authors: KIM, KI CHEL, KIM, WHA SUN
• Format: Patent
• Language: English
• Published: 21.01.2008
• Subjects: EMBANKMENTS; EXCAVATIONS; FIXED CONSTRUCTIONS; FOUNDATIONS; HYDRAULIC ENGINEERING; SOIL SHIFTING; UNDERGROUND OR UNDERWATER STRUCTURES

A self-adhesive composite waterproof sheet and a waterproof construction method of an underground external wall using the self-adhesive composite waterproof sheet are provided to prevent a leakage of water by keeping a waterproof layer not to be cut when tamping on the re-filled part or removing a support plate after waterproofing an underground external wall and to construct a waterproof layer and a waterproof protection layer at once. A self-adhesive composite waterproof sheet(100) comprises a waterproof layer(110) composed of a synthetic rubber layer(111) and a synthetic rubber surface protection layer(113) to heighten insufficient tensile strength and the coefficient of expansion, a waterproof protection layer(130) placed on the upper part of the waterproof layer to protect the waterproof layer and composed of first and second protection layers(131,133) protecting and insulating the waterproof layer and a separation guide layer(135) guiding the separation of the second protection layer from the first protection layer, and a release paper layer(150) attached to the lower part of the waterproof layer to carry the self-adhesive composite waterproof sheet to the appointed site easily. A construction method of an underground external wall using a self-adhesive composite waterproof sheet comprises the steps of drying an underground external wall sufficiently, repairing a cracked part, removing obstacles and cleaning out dust or oiled dirt, applying a primer layer, cutting out a self-adhesive composite waterproof sheet into the appointed length and removing a release paper layer, and then attaching on the primer layer.