Underground modified asphalt felt (SBS) waterproof layer
The process standard is applicable to the construction of a polymer modified asphalt felt underground waterproof layer. Construction preparation 2.1 Materials and requirements 2.1.1 Polymer modified bituminous felt waterproofing membrane 2.1.1.1 Specifications: See Table 3-6. Polymer modified bituminous tarpaulin waterproofing membrane Specification Table 3-6 Thickness (mm) Width (mm) Length (m) 2.0 ≥1000 20 3.0 ≥1000 10 4.0 ≥1000 10 5.0 ≥1000 10 2.1.1.2 Technical performance: see Table 3-7. Polymer modified bituminous tarpaulin waterproofing membrane technical performance Table 3-7 Indicator Polyester Felt Braid Fetal Polyethylene Tire Tensile Strength N ≥400 ≥500 ≥50 ≥200 Elongation % ≥30 ≥5 ≥200 ≥50 Resistance Heat 85°C Heat-free for 2 hours without flowing, coating without sliding Low-temperature flexibility -15°C round rod around the specified diameter, without cracks Impermeability Pressure / Hold time 0.2MPa/30min 2.1.2 Complementary material: 2.1.2.1 Neoprene Bituminous Adhesives: Neoprene is a black liquid formulated with asphalt and solvents. Used for bonding of linoleum joints. 2.1.2.2 rubber asphalt emulsion: used for coil bonding. 2.1.2.3 rubber bituminous caulking paste: used for the sealing of special parts, pipe roots, deformation joints, etc. 2.1.2.4 Gasoline, xylene, etc.: Used for cleaning tools and contaminated parts. 2.2 The main appliances: 2.2.1 Cleaning appliances: high-pressure hair dryer, small spade, spade. 2.2.2 Operating tools, electric mixer, oil brush, iron drum, gasoline torch or special flame spray gun, pressure gauge, hand-held roller, iron roller, scissors, ruler, 1500mmφ30 tube (iron, plastic), stroke ) Line supplies. 2.3 Operating conditions: 2.3.1 Examine the drawings before construction, compile construction plans for waterproofing works, and provide technical disclosure. Underground waterproofing works must be carried out by professional teams. Operators are required to hold certificates. 2.3.2 The base layer of the waterproofing layer must be completed according to the design and dried after curing. The moisture content should be no more than 9%. The base layer should be flat, firm, not empty, cracked, and free of sand. 2.3.3 Before applying the primer to the waterproof layer (cold base oil), the base surface should be cleaned. 2.3.4 The materials used for construction are flammable. Therefore, appropriate fire fighting equipment should be prepared. Operation process 3.1 Process flow: Primary cleaning → Brushing primary treatment agent → Laminating additional layer → Hot-melt coating roll material → Hot-melt sealing edge → Doing protection layer 3.2 Grass-roots cleaning: Before the construction, the qualified grass-roots level shall be cleaned. 3.3 Brushing primary treatment agent: Brush a neoprene asphalt adhesive diluted with petrol on the surface of the primary coating. The coating should be uniform and not penetrate the bottom. 3.4 Paving additional layers: Pipe roots, yin and yang corners plus a layer of membrane. According to the specification and design requirements, the coils are cut into corresponding shapes and laid. 3.5 Pavement Coil: The modified bitumen membrane is cut and rolled up according to the length of the paving. When the operation is performed, the coiled material is pierced into the core with a φ30 tube, and the end of the coil is started. The starting point of the shop is to ignite the petrol torch or dedicated flame spray gun and heat the junction between the base layer and the coil. The spray gun is kept at a distance of about 300 mm from the heating surface. When the asphalt of the coil is just melted, the two ends of the pipe are observed when the asphalt of the coil is just melted. Rolling slowly forward, requiring uniform force, no nesting, laying width should be mastered, full affixed method lap width of 80mm, sticking method lap width is 100mm. 3.6 Hot-melt edge sealing: The lap seam of the coil is heated with a spray gun and pressed to the edge to make the asphalt stick. The end of the coiled material is filled with asphalt caulking. 3.7 Protective layer construction: Plane to make cement mortar or fine stone concrete protective layer; after the waterproof layer of facade is finished, it is necessary to wipe the concrete mortar protection layer in time. Quality Standards 4.1 Guaranteed Items 4.1.1 The specifications, properties, and mix ratios of polymer modified bitumen membranes and adhesives must be designed according to the design and relevant standards, and should have a qualified factory certificate. 4.1.2 The detailed practice of the special part of the coil waterproofing layer must comply with the design requirements and the provisions of the construction and acceptance specifications. 4.1.3 Waterproof layer is strictly prohibited from damage and leakage. 4.2 Basic items: 4.2.1 The grass-roots level shall be smooth, free from emptying and sanding, and the yin and yang angles shall be rounded or obtuse. 4.2.2 The adhesive of modified asphalt adhesive should be evenly coated, and there must be no phenomenon of leakage brush, bottom penetration and pitting. 4.2.3 The width of the additional layer of waterproof material for coils shall meet the requirements of the code; the overlapping width of the layered joints shall comply with the provisions of the code, and the head shall be firmly embedded. 4.2.4 Coil bonding should be firm and free from defects such as hollowing, damage, sliding edge, blistering, wrinkles and so on. Finished product protection 5.1 Pipes embedded in the underground membrane waterproof layer shall not be damaged or blocked during construction. 5.2 After the waterproofing of the coiled material is completed, a protective layer shall be prepared in time to prevent the structural construction from damaging the waterproof layer; after the external waterproof layer is applied, the protective wall shall be erected according to the design. 5.3 In the construction of waterproof surface layer of coils, no material shall be placed on the waterproof layer and used as a construction transportation lane. Quality problems that should be noted 6.1 Bad web laps: Joint lap forms and lap widths of long and short sides are too small, bonding at the joints is not dense, damage to the joints, emptying, and construction procedures should follow procedures The standard line is projected so that it conforms to the specifications of the coil. During the operation, the line is laid so that the long side of the coil is not less than 100mm and the short side is not less than 150mm. 6.2 Hollowing: The base layer of the membrane is wet, uneven, unclean, and produces gas and hollowing between the base layer and the coil. When the pavement is laid, the exhaust gas is not complete and the air is trapped. The base layer should be fully dried during construction and the coiled material should be evenly compacted. 6.3 Poor adhesion of the waterproof layer at the root of the pipe: the cleaning is not clean, the shape of the cut coil is inconsistent with the shape of the root, and the edging is not true. The cleaning during construction should be completely clean. Pay attention to the operation, compact the coil, and do not open the mouth. Alice, wrinkles and other phenomena. 6.4 Leakage: The corners, pipe roots and deformation joints are not easy to operate and leak. Additional layers shall be carefully handled during construction; the webs shall be protected and the overlap shall meet the width requirements to ensure the quality of the special parts. Quality Record This process standard should have the following quality records: 7.1 The waterproof membrane should have a product certificate, on-site sampling retest qualified information. 7.2 cement material should have factory certificate, use the mix ratio data. 7.3 Inspection and acceptance data and quality inspection and assessment data of concealed projects.
palisade material: high quality steel sheet, hot dipped aluminum-galvanzized steel sheet, cold rolled steel and hot rolled steel
Palisade process:
shape up, hot dipped, powder coated, PVC anti-corrosion treatment
Palisade type:
"D" type and" W" type according to different shape of section
pale thickness: 2.5mm, 3.0mm
pale width: 65mm
Palisade product features:
high strength, good rigidity, structural stability, anti-corrosion, beautifull appearance, wide vision, low price, various colors, styles and easily install.
Palisade uses:
The palisade used as rotective fence or decorations in buildings, residential sites, industry, agriculture, city govenment, schools, lawn, garden roads and transports.
Professional Palisade Fence,Pvc Coated Palisade Fence,Palisade Fence Panels,Galvanized Palisade Fence
Anping Deming Metal Net Co.,Ltd , https://www.wovenfence.nl