Fireproof plugging material and application thereof in groove box construction method

Abstract

The invention discloses a fireproof plugging material prepared from the following components in parts by mass: 270-330 parts of asbestos wool, 110-130 parts of gypsum, 57-63 parts of cement, 27-33 parts of perlite, 18-22 parts of fireproof expanded graphite powder, 75-85 parts of water, 4-6 parts of a high-concentration cement foaming agent and 0.9-1.1 parts of a cement foaming foam stabilizer. The invention further discloses a groove box construction method of the fireproof plugging material, a formwork is mounted and a waterproof table is built after an opening of an electrical vertical shaft is cleaned, and the space between the groove box and the formwork and the space between the groove box and a cable gap in the groove box are filled with the fireproof plugging material mixture. Thefireproof expanded graphite powder is added and combined with the high-concentration cement foaming agent and the cement foaming foam stabilizer, so that the fireproof plugging material is endowed with excellent expansion performance, and fire spreading is effectively inhibited; according to the invention, semi-wet mixing is adopted, so that the structural stability and construction speed of the solidified fireproof plugging material are improved.

Description

technical field [0001] The invention belongs to the technical field of fire prevention construction, and in particular relates to a fire prevention sealing material and its application in a tank box construction method. Background technique [0002] The electrical lines in high-rise buildings are responsible for the power transmission and the energy supply of the entire building, while the cables of the power distribution system are generally laid in the slot box of the electrical shaft. Once a fire occurs in an electrical line, the flame will spread and expand along the cable. The fire is not easy to be controlled in a short time, and it is not easy to be extinguished in a local area, resulting in great losses. Therefore, it is necessary to carry out fire prevention and sealing. Usually, materials such as fireproof rock wool and fireproof mud are used for fireproof sealing of the tank box, but the structure is not firm, easy to move, easy to fall off, easy to crack, etc., a...