施工技术

construction technique

基层处理

Grass-roots treatment

  在干燥的基层上涂刷APP改性沥青防水卷材冷底 油，应符合国家规范要求，施工时先将APP冷底油搅拌均匀。基层APP冷底油涂刷前，应根据基层处理剂干燥时间的长短和施工进度快慢确定，一定涂刷均匀，不得有麻点、气泡、空白或透底，干燥到不黏脚为宜,再进行卷材铺贴工作。

On dry bed coating of APP modified asphalt waterproof coiled material cold bottom oil, should meet the requirements of national standard, the construction of the APP cold bottom oil mixing. The APP cold bottom oil coating, base treatment shall be determined according to the drying time and speed of construction schedule, a uniform coating, no pitting, bubble, blank or not sticky to dry the feet is appropriate, then roll paving work.

卷材铺设

Coiled material

1．弹粗线：在处理好并干燥的基层表面，按照所 选卷材的宽度留出搭接缝尺寸，将铺贴卷材的基准线 弹好，以便按此进行铺贴。 2．将改性沥青防水卷材按铺贴长度进行裁剪并 卷好备用，操作时先将已卷好的卷材用直径为30mm 的管穿入卷心，薄膜面向下，对好搭接缝，长边搭接 宽度不小于80mm，短边搭接宽度不小于120mm，施工 顺序由低处（落水口）向高处依次铺贴。点燃汽油喷 灯或专用火焰喷枪，加热基层与卷材交接处，火焰加 热器的喷嘴距卷材面的距离约30cm左右；与基层呈 30°～45°角，幅宽内加热应均匀，不得过分加热 或烧穿卷材。当烘烤至薄膜熔化，卷材底有光泽、发 黑，有一层薄的熔化层时，推动压实卷材，使底层粘 住定位后，再将另一端卷起，按上述方法继续进行， 要求用力均匀、不窝气。当屋面坡度小于3%时，卷材 宜平行屋脊方向铺贴；屋面坡度≥3%时，卷材平行或 垂直屋脊铺贴均可。上下层卷材不得垂直铺贴；铺设 应先低后高逆坡进行。 3．铺贴时尽量采用满粘法，并尽量减少短边连 接。满贴搭接宽度为80mm，条粘法搭接宽度为120mm， 搭接宽度最大允许偏差为-10mm，接缝口应采用密封材 料封严，其宽度≥10mm。卷材末端收头用橡胶沥青嵌 缝膏嵌固填实。 4．排水口、阴阳角及管道根部等均为易出现渗漏 部位，在大面积铺贴卷材之前应先刷涂料，用硫化橡 胶带或同类卷材裁剪成一定形状包封处理，然后仔细 铺平、贴紧、压实、收头牢靠。保护层施工 防水卷材铺贴完成之后，平面部位做水泥砂浆或细 石混凝土保护层。在防水层面上铺300mm×300mm膨胀 珍珠岩隔热方块，上面加做30mm厚水泥砂浆保护层， 该层内植钢丝网，保护层设分格缝，缝内用密封材料 填充，以便更好的保护防水层。

1., the thick line: on the surface of the base surface that is processed and dried, the size of the joint shall be set up according to the width of the selected coil, and the base line of the lay up coil can be played well, so as to lay the paste according to this. 2. the modified asphalt waterproofing materials cut by paving length and roll standby, when the coil wound with 30mm diameter pipes penetrate through the iceberg, film oriented, good lap seam, long edge lap width not less than 80mm, the short side lap width not less than 120mm, the sequence of construction the lower (drain) to high order paving. Ignite gasoline blowtorch or special flame spray gun, heating coil and base junction, nozzle flame heater coil from the distance is about 30cm; and the base was 30 degrees to 45 degrees, the width of the internal heating should be uniform, not too much heat or burn the coil. When baking to film melting, glossy, black bottom sheet, a thin layer of melted layer, promote compaction material, make the bottom stick after positioning, and the other end is rolled up, according to the above method to require uniform force, no air pocket. When the roof slope is less than 3%, should be parallel to the ridge direction of paving material; roof slope was higher than 3%, parallel or vertical paving membrane roof can. Not on the lower vertical Paving Membrane; laying should be low after the high of Nipo. Full stick method is used as far as possible when the 3. paving is attached, and the short side connection is minimized. With full lap width 80mm, sticky lap lap width width is 120mm, the maximum allowable deviation for -10mm, joint sealing material should be used to seal, its width is larger than 10mm. Coil end head with rubber asphalt sealant embedded filling. 4., drainage, yin and Yang, and pipe roots are all easy to leak. Before large area is laid up, the paint should first be brushed, and the vulcanized rubber belt or similar coiled material should be cut into a certain shape to seal. Then it will be paving, tending, compacting and collecting firmly. After the construction of the waterproof roll of the protective layer is completed, the plane part is made of cement mortar or fine stone concrete protection layer. The 300mm * 300mm expanded perlite insulation block is covered on the waterproof layer, and 30mm thick cement mortar protection layer is added. The steel wire mesh is protected in the layer, and the protective layer is divided into grid joints, and the sealing material is filled in the seam, so as to better protect the waterproof layer.