Large surface construction of SBS coiled material (1) if one layer of coiled material is used, the thickness shall not be less than 4mm, and if two layers are used, the thickness of each layer shall not be less than 3mm.
The coiled material construction can be carried out only after it is dry; 5.
2.
The side wall of the vertical wall shall be fully bonded without hollowing, and the bottom plate shall be point bonded or empty paved.
1、 Process flow 1.
Base course treatment (1) clean the base course, and the base course surface is flat and dry.
There shall be no hollowing, cracking and sand return on the vertical wall; (2) The plane and facade joints, turning points, internal and external corners, etc.
shall not damage the waterproof layer.
The cold primer oil shall be applied evenly without leakage.
shall be made into uniform, flat and smooth rounded corners, and the arc radius shall not be less than 50mm; 4.
During construction, it shall be noted that the pump pipe, bucket car, etc.
Scope of application: Construction of SBS modified asphalt waterproof coiled material for basement floor (including raft, independent column base, etc.).
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Construction of protective layer the protective layer is 40mm thick fine aggregate concrete.
Process flow: base course treatment → brushing cold primer oil → additional layer construction → large surface construction of coiled material → protective layer construction 3.
(2) The lap length of the long side and the short side of SBS coil shall not be less than 100mm, the lap range must be welded firmly, the interface shall overflow hot-melt asphalt, and the interface shall be sealed; (3) If there are two layers of coiled materials, the upper and lower layers of coiled materials shall be staggered by 1 / 2 ~ 1 / 3 of the width, and shall not be paved vertically.
At the junction, turning point and internal and external corners of the plane and facade of the additional layer of SBS coiled material, 500mm wide additional layer coiled material shall be set, and 500mm extension shall be made on both sides of the post cast strip joint to strengthen the additional layer, and the plane and facade shall be expanded evenly; 6.
The part folded from the bottom plate to the facade of the external wall and in contact with the permanent protective wall shall be laid empty, and the coiled material shall be temporarily fixed on the protective wall at the junction with the temporary protective wall.
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Hot melt method shall be adopted for coil construction, and the large surface coil shall be firmly bonded with the additional layer.
