Practice of waterproof layer of asphalt waterproofing membrane

This is a traditional construction method, pouring hot horseshoe fat and rolling linoleum layer by layer. Scope of application: petroleum asphalt felt, three felt and four oil (two felt and three oil) laminated pavement.

(2) Hot air welding:

Hot air welding gun is used to heat the lap seam of waterproof coiled material for bonding. Scope of application: Lap seam welding of thermoplastic synthetic polymer waterproofing membrane.

(3) Hot melt method

The hot melt adhesive at the bottom of the flame heater investment mold is used for pasting. Scope of application: Lap seam welding of thermoplastic synthetic polymer waterproofing membrane.

(4) The waterproofing membrane is paved by hot-melt method of automobiles and semi-automatic machines.

Manual waterproofing membrane paving vehicle, modified asphalt waterproofing membrane paving machine. Now, it can be used to waterproof large planes, slopes below 20 degrees, subways, bridges, high-speed railways and public buildings. 100 square meters or more can be used. You can get on the elevator and the roof. The weight is 24 kg, the length is 1600 mm, the width is 450 mm and the height is 300 mm, and it can be easily put into the trunk of an automobile. The SBS waterproofing membrane with the length of 10 m can be unfolded, melted, rolled and sealed at one time, saving time, effort and money. It can lay 500 to 700 square meters a day, replacing single-head 50-type liquefied gas flamethrower for construction and laying quality. Reduce the maintenance rate of water leakage, reduce the labor intensity of waterproof workers, and reduce the amount of toxic gas inhaled when liquefied gas is burned. Tel 138 16882447. Manual waterproofing membrane laying vehicle. There is no need for straight laying, just put a shaft in the middle to the coil hole, and both ends are locked with buckles. The operation is simple during construction, just walk by hand. There are two guiding and positioning wheels in front of the car, which push straight according to the edge of the first laid coil, and one coil burns for 3.5 minutes. 8 Fire-breathing type 2, you can open 8 fire-breathing at the same time, or you can only open 4 fire-breathing edges on the side.

2, cold construction technology

(1) cold bonding method

The cold asphalt binder prepared by the factory is used, and the asphalt felt is directly scraped without heating during construction. Scope of application: Three-felt and Four-oil (two-felt and three-oil) petroleum asphalt linoleum laminated pavement.

(2) Self-adhesive method

Self-adhesive waterproofing membrane is used for roof leakage maintenance, and it is bonded directly without hot work or coating bonding materials. Scope of application: self-adhesive synthetic polymer waterproofing membrane and polymer modified asphalt waterproofing membrane.

(3) Cold bonding method

The coil is bonded to the substrate using an adhesive, and the coil is bonded to the coil without heating. Scope of application: synthetic polymer coiled material and polymer modified asphalt waterproof coiled material.

Second, what are the precautions for roof waterproofing membrane construction?

1, the design requires that the slope layer of the roof should be laid at a gradient of 2%, so the coiled material should be laid parallel to the roof from bottom to top, and the coiled material lap must be tight, the joint should be overlapped in the direction of water flow, and the width should be not less than 50mm, and the joint between the upper and lower houses should be staggered by 250 mm. Before laying the waterproof coiled material in a large area, the additional waterproof cloth at the eaves gutter, nozzle and rain outlet should be laid from the lower part of the roof to the higher part.

2, all out of the roof pipes and other components, must open holes in the roof, in order to prevent water leakage, the coil should be turned up, plastered with cement mortar or covered with galvanized iron sheet to stop water, and the flooding height should not exceed 200 mm

The coiled material layer of waterproof material shall be firmly bonded without hollowing, breakage, slippage, edge warping, blistering, buckling and other defects. After the waterproof project is completed and the water storage test is qualified, the next working procedure must be started.

3. When the roof coil meets the parapet, the coil should be rolled up along the wall, the height should be less than 250mm, and then fixed on the wooden bricks and blocks embedded in the wall, and 1: 3 cement mortar is used as slope water.

The main points of acceptance mainly focus on the lap joint treatment between the coil and the node with complex structure. There are generally no construction problems in these places, and the waterproof layer is basically completed. Otherwise, if a place is not handled well, there will be a little water leakage, and even the source of water channeling will be difficult to find, which will bring a lot of inconvenience to future maintenance.